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<p>渐进式 JavaScript 框架 Vue 2 备忘清单的快速参考列表，包含常用 API 和示例。</p>
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</div></header><div class="h1wrap-body"><div class="wrap"><div class="wrap-header h2wrap"><h2 id="入门"><a aria-hidden="true" tabindex="-1" href="#入门"><span class="icon icon-link"></span></a>入门</h2><div class="wrap-body">
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</div></div><div class="h2wrap-body"><div class="wrap"><div class="wrap-header h3wrap"><h3 id="介绍"><a aria-hidden="true" tabindex="-1" href="#介绍"><span class="icon icon-link"></span></a>介绍</h3><div class="wrap-body">
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<p>Vue 是一套用于构建用户界面的渐进式框架</p>
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<ul>
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<li><a href="https://v2.cn.vuejs.org/">Vue 2.x 官方文档</a></li>
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<li><a href="https://v3.router.vuejs.org/">Vue Router 3.x 官方文档</a></li>
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</ul>
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</div></div></div><div class="wrap"><div class="wrap-header h3wrap"><h3 id="声明式渲染"><a aria-hidden="true" tabindex="-1" href="#声明式渲染"><span class="icon icon-link"></span></a>声明式渲染</h3><div class="wrap-body">
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<pre class="language-html"><code class="language-html code-highlight"><span class="code-line"><span class="token tag"><span class="token tag"><span class="token punctuation"><</span>div</span> <span class="token attr-name">id</span><span class="token attr-value"><span class="token punctuation attr-equals">=</span><span class="token punctuation">"</span>app<span class="token punctuation">"</span></span><span class="token punctuation">></span></span>
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</span><span class="code-line"> {{ message }}
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</span><span class="code-line"><span class="token tag"><span class="token tag"><span class="token punctuation"></</span>div</span><span class="token punctuation">></span></span>
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</span></code></pre>
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<pre class="language-js"><code class="language-js code-highlight"><span class="code-line"><span class="token keyword">var</span> app <span class="token operator">=</span> <span class="token keyword">new</span> <span class="token class-name">Vue</span><span class="token punctuation">(</span><span class="token punctuation">{</span>
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</span><span class="code-line"> <span class="token literal-property property">el</span><span class="token operator">:</span> <span class="token string">'#app'</span><span class="token punctuation">,</span>
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</span><span class="code-line"> <span class="token literal-property property">data</span><span class="token operator">:</span> <span class="token punctuation">{</span>
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</span><span class="code-line"> <span class="token literal-property property">message</span><span class="token operator">:</span> <span class="token string">'Hello Vue!'</span>
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</span><span class="code-line"> <span class="token punctuation">}</span>
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</span><span class="code-line"><span class="token punctuation">}</span><span class="token punctuation">)</span>
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</span></code></pre>
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</div></div></div><div class="wrap row-span-2"><div class="wrap-header h3wrap"><h3 id="基础例子"><a aria-hidden="true" tabindex="-1" href="#基础例子"><span class="icon icon-link"></span></a>基础例子</h3><div class="wrap-body">
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<!--rehype:wrap-class=row-span-2-->
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<pre class="language-html"><code class="language-html code-highlight"><span class="code-line"><span class="token tag"><span class="token tag"><span class="token punctuation"><</span>div</span> <span class="token attr-name">id</span><span class="token attr-value"><span class="token punctuation attr-equals">=</span><span class="token punctuation">"</span>example<span class="token punctuation">"</span></span><span class="token punctuation">></span></span>
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</span><span class="code-line"> <span class="token tag"><span class="token tag"><span class="token punctuation"><</span>p</span><span class="token punctuation">></span></span>原始信息: "{{ message }}"<span class="token tag"><span class="token tag"><span class="token punctuation"></</span>p</span><span class="token punctuation">></span></span>
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</span><span class="code-line"> <span class="token tag"><span class="token tag"><span class="token punctuation"><</span>p</span><span class="token punctuation">></span></span>
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</span><span class="code-line"> 计算的反向信息: "{{ reversedMessage }}"
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</span><span class="code-line"> <span class="token tag"><span class="token tag"><span class="token punctuation"></</span>p</span><span class="token punctuation">></span></span>
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</span><span class="code-line"><span class="token tag"><span class="token tag"><span class="token punctuation"></</span>div</span><span class="token punctuation">></span></span>
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</span></code></pre>
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<pre class="language-js"><code class="language-js code-highlight"><span class="code-line"><span class="token keyword">var</span> vm <span class="token operator">=</span> <span class="token keyword">new</span> <span class="token class-name">Vue</span><span class="token punctuation">(</span><span class="token punctuation">{</span>
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</span><span class="code-line"> <span class="token literal-property property">el</span><span class="token operator">:</span> <span class="token string">'#example'</span><span class="token punctuation">,</span>
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</span><span class="code-line"> <span class="token literal-property property">data</span><span class="token operator">:</span> <span class="token punctuation">{</span>
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</span><span class="code-line"> <span class="token literal-property property">message</span><span class="token operator">:</span> <span class="token string">'Hello'</span>
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</span><span class="code-line"> <span class="token punctuation">}</span><span class="token punctuation">,</span>
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</span><span class="code-line"> <span class="token literal-property property">computed</span><span class="token operator">:</span> <span class="token punctuation">{</span>
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</span><span class="code-line"> <span class="token comment">// 计算属性的 getter</span>
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</span><span class="code-line"> <span class="token function-variable function">reversedMessage</span><span class="token operator">:</span> <span class="token keyword">function</span> <span class="token punctuation">(</span><span class="token punctuation">)</span> <span class="token punctuation">{</span>
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</span><span class="code-line"> <span class="token comment">// `this` 指向 vm 实例</span>
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</span><span class="code-line"> <span class="token keyword control-flow">return</span> <span class="token keyword">this</span><span class="token punctuation">.</span><span class="token property-access">message</span><span class="token punctuation">.</span><span class="token method function property-access">split</span><span class="token punctuation">(</span><span class="token string">''</span><span class="token punctuation">)</span>
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</span><span class="code-line"> <span class="token punctuation">.</span><span class="token method function property-access">reverse</span><span class="token punctuation">(</span><span class="token punctuation">)</span><span class="token punctuation">.</span><span class="token method function property-access">join</span><span class="token punctuation">(</span><span class="token string">''</span><span class="token punctuation">)</span>
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</span><span class="code-line"> <span class="token punctuation">}</span>
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||
</span><span class="code-line"> <span class="token punctuation">}</span>
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</span><span class="code-line"><span class="token punctuation">}</span><span class="token punctuation">)</span>
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</span></code></pre>
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<p>结果</p>
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<pre><code class="code-highlight"><span class="code-line">原始信息: "Hello"
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</span><span class="code-line">计算的反向信息: "olleH"
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</span></code></pre>
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</div></div></div><div class="wrap"><div class="wrap-header h3wrap"><h3 id="绑定元素属性"><a aria-hidden="true" tabindex="-1" href="#绑定元素属性"><span class="icon icon-link"></span></a>绑定元素属性</h3><div class="wrap-body">
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<pre class="language-html"><code class="language-html code-highlight"><span class="code-line"><span class="token tag"><span class="token tag"><span class="token punctuation"><</span>div</span> <span class="token attr-name">id</span><span class="token attr-value"><span class="token punctuation attr-equals">=</span><span class="token punctuation">"</span>app-2<span class="token punctuation">"</span></span><span class="token punctuation">></span></span>
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</span><span class="code-line"> <span class="token tag"><span class="token tag"><span class="token punctuation"><</span>span</span> <span class="token attr-name"><span class="token namespace">v-bind:</span>title</span><span class="token attr-value"><span class="token punctuation attr-equals">=</span><span class="token punctuation">"</span>message<span class="token punctuation">"</span></span><span class="token punctuation">></span></span>
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</span><span class="code-line"> 鼠标悬停几秒钟查看此处动态绑定的提示信息！
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</span><span class="code-line"> <span class="token tag"><span class="token tag"><span class="token punctuation"></</span>span</span><span class="token punctuation">></span></span>
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</span><span class="code-line"><span class="token tag"><span class="token tag"><span class="token punctuation"></</span>div</span><span class="token punctuation">></span></span>
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</span></code></pre>
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||
<pre class="language-js"><code class="language-js code-highlight"><span class="code-line"><span class="token keyword">var</span> app2 <span class="token operator">=</span> <span class="token keyword">new</span> <span class="token class-name">Vue</span><span class="token punctuation">(</span><span class="token punctuation">{</span>
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</span><span class="code-line"> <span class="token literal-property property">el</span><span class="token operator">:</span> <span class="token string">'#app-2'</span><span class="token punctuation">,</span>
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</span><span class="code-line"> <span class="token literal-property property">data</span><span class="token operator">:</span> <span class="token punctuation">{</span>
|
||
</span><span class="code-line"> <span class="token literal-property property">message</span><span class="token operator">:</span> <span class="token string">'页面加载于 '</span> <span class="token operator">+</span> <span class="token keyword">new</span> <span class="token class-name">Date</span><span class="token punctuation">(</span><span class="token punctuation">)</span>
|
||
</span><span class="code-line"> <span class="token punctuation">.</span><span class="token method function property-access">toLocaleString</span><span class="token punctuation">(</span><span class="token punctuation">)</span>
|
||
</span><span class="code-line"> <span class="token punctuation">}</span>
|
||
</span><span class="code-line"><span class="token punctuation">}</span><span class="token punctuation">)</span>
|
||
</span></code></pre>
|
||
</div></div></div><div class="wrap"><div class="wrap-header h3wrap"><h3 id="条件"><a aria-hidden="true" tabindex="-1" href="#条件"><span class="icon icon-link"></span></a>条件</h3><div class="wrap-body">
|
||
<pre class="language-html"><code class="language-html code-highlight"><span class="code-line"><span class="token tag"><span class="token tag"><span class="token punctuation"><</span>div</span> <span class="token attr-name">id</span><span class="token attr-value"><span class="token punctuation attr-equals">=</span><span class="token punctuation">"</span>app-3<span class="token punctuation">"</span></span><span class="token punctuation">></span></span>
|
||
</span><span class="code-line"> <span class="token tag"><span class="token tag"><span class="token punctuation"><</span>p</span> <span class="token attr-name">v-if</span><span class="token attr-value"><span class="token punctuation attr-equals">=</span><span class="token punctuation">"</span>seen<span class="token punctuation">"</span></span><span class="token punctuation">></span></span>现在你看到我了<span class="token tag"><span class="token tag"><span class="token punctuation"></</span>p</span><span class="token punctuation">></span></span>
|
||
</span><span class="code-line"><span class="token tag"><span class="token tag"><span class="token punctuation"></</span>div</span><span class="token punctuation">></span></span>
|
||
</span></code></pre>
|
||
<pre class="language-js"><code class="language-js code-highlight"><span class="code-line"><span class="token keyword">var</span> app3 <span class="token operator">=</span> <span class="token keyword">new</span> <span class="token class-name">Vue</span><span class="token punctuation">(</span><span class="token punctuation">{</span>
|
||
</span><span class="code-line"> <span class="token literal-property property">el</span><span class="token operator">:</span> <span class="token string">'#app-3'</span><span class="token punctuation">,</span>
|
||
</span><span class="code-line"> <span class="token literal-property property">data</span><span class="token operator">:</span> <span class="token punctuation">{</span>
|
||
</span><span class="code-line"> <span class="token literal-property property">seen</span><span class="token operator">:</span> <span class="token boolean">true</span>
|
||
</span><span class="code-line"> <span class="token punctuation">}</span>
|
||
</span><span class="code-line"><span class="token punctuation">}</span><span class="token punctuation">)</span>
|
||
</span></code></pre>
|
||
<p>控制切换一个元素是否显示</p>
|
||
</div></div></div><div class="wrap"><div class="wrap-header h3wrap"><h3 id="循环"><a aria-hidden="true" tabindex="-1" href="#循环"><span class="icon icon-link"></span></a>循环</h3><div class="wrap-body">
|
||
<pre class="language-html"><code class="language-html code-highlight"><span class="code-line"><span class="token tag"><span class="token tag"><span class="token punctuation"><</span>div</span> <span class="token attr-name">id</span><span class="token attr-value"><span class="token punctuation attr-equals">=</span><span class="token punctuation">"</span>app-4<span class="token punctuation">"</span></span><span class="token punctuation">></span></span>
|
||
</span><span class="code-line"> <span class="token tag"><span class="token tag"><span class="token punctuation"><</span>ol</span><span class="token punctuation">></span></span>
|
||
</span><span class="code-line"> <span class="token tag"><span class="token tag"><span class="token punctuation"><</span>li</span> <span class="token attr-name">v-for</span><span class="token attr-value"><span class="token punctuation attr-equals">=</span><span class="token punctuation">"</span>todo in todos<span class="token punctuation">"</span></span><span class="token punctuation">></span></span>
|
||
</span><span class="code-line"> {{ todo.text }}
|
||
</span><span class="code-line"> <span class="token tag"><span class="token tag"><span class="token punctuation"></</span>li</span><span class="token punctuation">></span></span>
|
||
</span><span class="code-line"> <span class="token tag"><span class="token tag"><span class="token punctuation"></</span>ol</span><span class="token punctuation">></span></span>
|
||
</span><span class="code-line"><span class="token tag"><span class="token tag"><span class="token punctuation"></</span>div</span><span class="token punctuation">></span></span>
|
||
</span></code></pre>
|
||
<pre class="language-js"><code class="language-js code-highlight"><span class="code-line"><span class="token keyword">var</span> app4 <span class="token operator">=</span> <span class="token keyword">new</span> <span class="token class-name">Vue</span><span class="token punctuation">(</span><span class="token punctuation">{</span>
|
||
</span><span class="code-line"> <span class="token literal-property property">el</span><span class="token operator">:</span> <span class="token string">'#app-4'</span><span class="token punctuation">,</span>
|
||
</span><span class="code-line"> <span class="token literal-property property">data</span><span class="token operator">:</span> <span class="token punctuation">{</span>
|
||
</span><span class="code-line"> <span class="token literal-property property">todos</span><span class="token operator">:</span> <span class="token punctuation">[</span>
|
||
</span><span class="code-line"> <span class="token punctuation">{</span> <span class="token literal-property property">text</span><span class="token operator">:</span> <span class="token string">'学习 JavaScript'</span> <span class="token punctuation">}</span><span class="token punctuation">,</span>
|
||
</span><span class="code-line"> <span class="token punctuation">{</span> <span class="token literal-property property">text</span><span class="token operator">:</span> <span class="token string">'学习 Vue'</span> <span class="token punctuation">}</span><span class="token punctuation">,</span>
|
||
</span><span class="code-line"> <span class="token punctuation">{</span> <span class="token literal-property property">text</span><span class="token operator">:</span> <span class="token string">'整个牛项目'</span> <span class="token punctuation">}</span>
|
||
</span><span class="code-line"> <span class="token punctuation">]</span>
|
||
</span><span class="code-line"> <span class="token punctuation">}</span>
|
||
</span><span class="code-line"><span class="token punctuation">}</span><span class="token punctuation">)</span>
|
||
</span></code></pre>
|
||
</div></div></div><div class="wrap"><div class="wrap-header h3wrap"><h3 id="点击事件处理"><a aria-hidden="true" tabindex="-1" href="#点击事件处理"><span class="icon icon-link"></span></a>点击事件处理</h3><div class="wrap-body">
|
||
<pre class="language-html"><code class="language-html code-highlight"><span class="code-line"><span class="token tag"><span class="token tag"><span class="token punctuation"><</span>div</span> <span class="token attr-name">id</span><span class="token attr-value"><span class="token punctuation attr-equals">=</span><span class="token punctuation">"</span>app-5<span class="token punctuation">"</span></span><span class="token punctuation">></span></span>
|
||
</span><span class="code-line"> <span class="token tag"><span class="token tag"><span class="token punctuation"><</span>p</span><span class="token punctuation">></span></span>{{ message }}<span class="token tag"><span class="token tag"><span class="token punctuation"></</span>p</span><span class="token punctuation">></span></span>
|
||
</span><span class="code-line"> <span class="token tag"><span class="token tag"><span class="token punctuation"><</span>button</span> <span class="token attr-name"><span class="token namespace">v-on:</span>click</span><span class="token attr-value"><span class="token punctuation attr-equals">=</span><span class="token punctuation">"</span>reverseMessage<span class="token punctuation">"</span></span><span class="token punctuation">></span></span>
|
||
</span><span class="code-line"> 反转消息
|
||
</span><span class="code-line"> <span class="token tag"><span class="token tag"><span class="token punctuation"></</span>button</span><span class="token punctuation">></span></span>
|
||
</span><span class="code-line"><span class="token tag"><span class="token tag"><span class="token punctuation"></</span>div</span><span class="token punctuation">></span></span>
|
||
</span></code></pre>
|
||
<pre class="language-js"><code class="language-js code-highlight"><span class="code-line"><span class="token keyword">var</span> app5 <span class="token operator">=</span> <span class="token keyword">new</span> <span class="token class-name">Vue</span><span class="token punctuation">(</span><span class="token punctuation">{</span>
|
||
</span><span class="code-line"> <span class="token literal-property property">el</span><span class="token operator">:</span> <span class="token string">'#app-5'</span><span class="token punctuation">,</span>
|
||
</span><span class="code-line"> <span class="token literal-property property">data</span><span class="token operator">:</span> <span class="token punctuation">{</span>
|
||
</span><span class="code-line"> <span class="token literal-property property">message</span><span class="token operator">:</span> <span class="token string">'Hello Vue.js!'</span>
|
||
</span><span class="code-line"> <span class="token punctuation">}</span><span class="token punctuation">,</span>
|
||
</span><span class="code-line"> <span class="token literal-property property">methods</span><span class="token operator">:</span> <span class="token punctuation">{</span>
|
||
</span><span class="code-line"> <span class="token function-variable function">reverseMessage</span><span class="token operator">:</span> <span class="token keyword">function</span> <span class="token punctuation">(</span><span class="token punctuation">)</span> <span class="token punctuation">{</span>
|
||
</span><span class="code-line"> <span class="token keyword">this</span><span class="token punctuation">.</span><span class="token property-access">message</span> <span class="token operator">=</span> <span class="token keyword">this</span><span class="token punctuation">.</span><span class="token property-access">message</span><span class="token punctuation">.</span><span class="token method function property-access">split</span><span class="token punctuation">(</span><span class="token string">''</span><span class="token punctuation">)</span>
|
||
</span><span class="code-line"> <span class="token punctuation">.</span><span class="token method function property-access">reverse</span><span class="token punctuation">(</span><span class="token punctuation">)</span><span class="token punctuation">.</span><span class="token method function property-access">join</span><span class="token punctuation">(</span><span class="token string">''</span><span class="token punctuation">)</span>
|
||
</span><span class="code-line"> <span class="token punctuation">}</span>
|
||
</span><span class="code-line"> <span class="token punctuation">}</span>
|
||
</span><span class="code-line"><span class="token punctuation">}</span><span class="token punctuation">)</span>
|
||
</span></code></pre>
|
||
</div></div></div><div class="wrap"><div class="wrap-header h3wrap"><h3 id="输入事件处理"><a aria-hidden="true" tabindex="-1" href="#输入事件处理"><span class="icon icon-link"></span></a>输入事件处理</h3><div class="wrap-body">
|
||
<pre class="language-html"><code class="language-html code-highlight"><span class="code-line"><span class="token tag"><span class="token tag"><span class="token punctuation"><</span>div</span> <span class="token attr-name">id</span><span class="token attr-value"><span class="token punctuation attr-equals">=</span><span class="token punctuation">"</span>app-6<span class="token punctuation">"</span></span><span class="token punctuation">></span></span>
|
||
</span><span class="code-line"> <span class="token tag"><span class="token tag"><span class="token punctuation"><</span>p</span><span class="token punctuation">></span></span>{{ message }}<span class="token tag"><span class="token tag"><span class="token punctuation"></</span>p</span><span class="token punctuation">></span></span>
|
||
</span><span class="code-line"> <span class="token tag"><span class="token tag"><span class="token punctuation"><</span>input</span> <span class="token attr-name">v-model</span><span class="token attr-value"><span class="token punctuation attr-equals">=</span><span class="token punctuation">"</span>message<span class="token punctuation">"</span></span><span class="token punctuation">></span></span>
|
||
</span><span class="code-line"><span class="token tag"><span class="token tag"><span class="token punctuation"></</span>div</span><span class="token punctuation">></span></span>
|
||
</span></code></pre>
|
||
<p><code>v-model</code> 指令，它能轻松实现表单输入和应用状态之间的双向绑定</p>
|
||
<pre class="language-js"><code class="language-js code-highlight"><span class="code-line"><span class="token keyword">var</span> app6 <span class="token operator">=</span> <span class="token keyword">new</span> <span class="token class-name">Vue</span><span class="token punctuation">(</span><span class="token punctuation">{</span>
|
||
</span><span class="code-line"> <span class="token literal-property property">el</span><span class="token operator">:</span> <span class="token string">'#app-6'</span><span class="token punctuation">,</span>
|
||
</span><span class="code-line"> <span class="token literal-property property">data</span><span class="token operator">:</span> <span class="token punctuation">{</span>
|
||
</span><span class="code-line"> <span class="token literal-property property">message</span><span class="token operator">:</span> <span class="token string">'Hello Vue!'</span>
|
||
</span><span class="code-line"> <span class="token punctuation">}</span>
|
||
</span><span class="code-line"><span class="token punctuation">}</span><span class="token punctuation">)</span>
|
||
</span></code></pre>
|
||
</div></div></div></div></div><div class="wrap"><div class="wrap-header h2wrap"><h2 id="模板语法"><a aria-hidden="true" tabindex="-1" href="#模板语法"><span class="icon icon-link"></span></a>模板语法</h2><div class="wrap-body">
|
||
</div></div><div class="h2wrap-body"><div class="wrap"><div class="wrap-header h3wrap"><h3 id="文本"><a aria-hidden="true" tabindex="-1" href="#文本"><span class="icon icon-link"></span></a>文本</h3><div class="wrap-body">
|
||
<pre class="language-html"><code class="language-html code-highlight"><span class="code-line"><span class="token tag"><span class="token tag"><span class="token punctuation"><</span>span</span><span class="token punctuation">></span></span>Message: {{ msg }}<span class="token tag"><span class="token tag"><span class="token punctuation"></</span>span</span><span class="token punctuation">></span></span>
|
||
</span><span class="code-line"><span class="token tag"><span class="token tag"><span class="token punctuation"><</span>span</span> <span class="token attr-name">v-once</span><span class="token punctuation">></span></span>
|
||
</span><span class="code-line"> 这个将不会改变: {{ msg }}
|
||
</span><span class="code-line"><span class="token tag"><span class="token tag"><span class="token punctuation"></</span>span</span><span class="token punctuation">></span></span>
|
||
</span></code></pre>
|
||
<p>使用 <code>v-once</code> 指令，执行一次性地插值，当数据改变时，插值处的内容不会更新</p>
|
||
</div></div></div><div class="wrap"><div class="wrap-header h3wrap"><h3 id="原始-html"><a aria-hidden="true" tabindex="-1" href="#原始-html"><span class="icon icon-link"></span></a>原始 HTML</h3><div class="wrap-body">
|
||
<pre class="language-html"><code class="language-html code-highlight"><span class="code-line"><span class="token tag"><span class="token tag"><span class="token punctuation"><</span>p</span><span class="token punctuation">></span></span>解释为普通文本: {{ rawHtml }}<span class="token tag"><span class="token tag"><span class="token punctuation"></</span>p</span><span class="token punctuation">></span></span>
|
||
</span><span class="code-line"><span class="token tag"><span class="token tag"><span class="token punctuation"><</span>p</span><span class="token punctuation">></span></span>
|
||
</span><span class="code-line"> 使用 v-html 指令:
|
||
</span><span class="code-line"> <span class="token tag"><span class="token tag"><span class="token punctuation"><</span>span</span> <span class="token attr-name">v-html</span><span class="token attr-value"><span class="token punctuation attr-equals">=</span><span class="token punctuation">"</span>rawHtml<span class="token punctuation">"</span></span><span class="token punctuation">></span></span><span class="token tag"><span class="token tag"><span class="token punctuation"></</span>span</span><span class="token punctuation">></span></span>
|
||
</span><span class="code-line"><span class="token tag"><span class="token tag"><span class="token punctuation"></</span>p</span><span class="token punctuation">></span></span>
|
||
</span></code></pre>
|
||
<p>使用 <code>v-html</code> 指令，输出真正的 <code>HTML</code></p>
|
||
</div></div></div><div class="wrap"><div class="wrap-header h3wrap"><h3 id="属性"><a aria-hidden="true" tabindex="-1" href="#属性"><span class="icon icon-link"></span></a>属性</h3><div class="wrap-body">
|
||
<pre class="language-html"><code class="language-html code-highlight"><span class="code-line"><span class="token tag"><span class="token tag"><span class="token punctuation"><</span>div</span> <span class="token attr-name"><span class="token namespace">v-bind:</span>id</span><span class="token attr-value"><span class="token punctuation attr-equals">=</span><span class="token punctuation">"</span>dynamicId<span class="token punctuation">"</span></span><span class="token punctuation">></span></span><span class="token tag"><span class="token tag"><span class="token punctuation"></</span>div</span><span class="token punctuation">></span></span>
|
||
</span><span class="code-line"><span class="token tag"><span class="token tag"><span class="token punctuation"><</span>button</span> <span class="token attr-name"><span class="token namespace">v-bind:</span>disabled</span><span class="token attr-value"><span class="token punctuation attr-equals">=</span><span class="token punctuation">"</span>isDisabled<span class="token punctuation">"</span></span><span class="token punctuation">></span></span>
|
||
</span><span class="code-line"> Button
|
||
</span><span class="code-line"><span class="token tag"><span class="token tag"><span class="token punctuation"></</span>button</span><span class="token punctuation">></span></span>
|
||
</span></code></pre>
|
||
<p>如果 <code>isDisabled</code> 的值是 null/undefined/false 则 <code>disabled</code> 不会被渲染出来</p>
|
||
</div></div></div><div class="wrap"><div class="wrap-header h3wrap"><h3 id="javascript-表达式"><a aria-hidden="true" tabindex="-1" href="#javascript-表达式"><span class="icon icon-link"></span></a>JavaScript 表达式</h3><div class="wrap-body">
|
||
<pre class="language-html"><code class="language-html code-highlight"><span class="code-line"><span class="token tag"><span class="token tag"><span class="token punctuation"><</span>div</span> <span class="token attr-name">id</span><span class="token attr-value"><span class="token punctuation attr-equals">=</span><span class="token punctuation">"</span>app<span class="token punctuation">"</span></span><span class="token punctuation">></span></span>
|
||
</span><span class="code-line"> <span class="token tag"><span class="token tag"><span class="token punctuation"><</span>span</span><span class="token punctuation">></span></span>消息: {{ msg }}<span class="token tag"><span class="token tag"><span class="token punctuation"></</span>span</span><span class="token punctuation">></span></span>
|
||
</span><span class="code-line"> <span class="token tag"><span class="token tag"><span class="token punctuation"><</span>span</span><span class="token punctuation">></span></span>{{ msg + '这是字符串' }}<span class="token tag"><span class="token tag"><span class="token punctuation"></</span>span</span><span class="token punctuation">></span></span>
|
||
</span><span class="code-line"> <span class="token tag"><span class="token tag"><span class="token punctuation"><</span>span</span><span class="token punctuation">></span></span>{{ isWorking ? '是':'否' }}<span class="token tag"><span class="token tag"><span class="token punctuation"></</span>span</span><span class="token punctuation">></span></span>
|
||
</span><span class="code-line"> <span class="token tag"><span class="token tag"><span class="token punctuation"><</span>span</span><span class="token punctuation">></span></span>{{ msg.getDetials() }}<span class="token tag"><span class="token tag"><span class="token punctuation"></</span>span</span><span class="token punctuation">></span></span>
|
||
</span><span class="code-line"> <span class="token tag"><span class="token tag"><span class="token punctuation"><</span>div</span> <span class="token attr-name"><span class="token namespace">v-bind:</span>id</span><span class="token attr-value"><span class="token punctuation attr-equals">=</span><span class="token punctuation">"</span><span class="token punctuation">'</span>list-' + id<span class="token punctuation">"</span></span><span class="token punctuation">></span></span><span class="token tag"><span class="token tag"><span class="token punctuation"></</span>div</span><span class="token punctuation">></span></span>
|
||
</span><span class="code-line"><span class="token tag"><span class="token tag"><span class="token punctuation"><</span>div</span><span class="token punctuation">></span></span>
|
||
</span></code></pre>
|
||
</div></div></div><div class="wrap"><div class="wrap-header h3wrap"><h3 id="指令"><a aria-hidden="true" tabindex="-1" href="#指令"><span class="icon icon-link"></span></a>指令</h3><div class="wrap-body">
|
||
<pre class="language-html"><code class="language-html code-highlight"><span class="code-line"><span class="token tag"><span class="token tag"><span class="token punctuation"><</span>p</span> <span class="token attr-name">v-if</span><span class="token attr-value"><span class="token punctuation attr-equals">=</span><span class="token punctuation">"</span>seen<span class="token punctuation">"</span></span><span class="token punctuation">></span></span>
|
||
</span><span class="code-line"> 现在你看到我了
|
||
</span><span class="code-line"><span class="token tag"><span class="token tag"><span class="token punctuation"></</span>p</span><span class="token punctuation">></span></span>
|
||
</span></code></pre>
|
||
<p><code>v-if</code> 指令将根据表达式 <code>seen</code> 的值的真假来插入/移除 <p> 元素</p>
|
||
</div></div></div><div class="wrap"><div class="wrap-header h3wrap"><h3 id="指令参数"><a aria-hidden="true" tabindex="-1" href="#指令参数"><span class="icon icon-link"></span></a>指令参数</h3><div class="wrap-body">
|
||
<pre class="language-html"><code class="language-html code-highlight"><span class="code-line"><span class="token tag"><span class="token tag"><span class="token punctuation"><</span>a</span> <span class="token attr-name"><span class="token namespace">v-bind:</span>href</span><span class="token attr-value"><span class="token punctuation attr-equals">=</span><span class="token punctuation">"</span>url<span class="token punctuation">"</span></span><span class="token punctuation">></span></span>...<span class="token tag"><span class="token tag"><span class="token punctuation"></</span>a</span><span class="token punctuation">></span></span>
|
||
</span></code></pre>
|
||
<p><code>v-bind</code> 指令将该元素 <code>href</code> 属性与表达式 <code>url</code> 的值绑定</p>
|
||
<pre class="language-html"><code class="language-html code-highlight"><span class="code-line"><span class="token tag"><span class="token tag"><span class="token punctuation"><</span>a</span> <span class="token attr-name"><span class="token namespace">v-on:</span>click</span><span class="token attr-value"><span class="token punctuation attr-equals">=</span><span class="token punctuation">"</span>doSomething<span class="token punctuation">"</span></span><span class="token punctuation">></span></span>...<span class="token tag"><span class="token tag"><span class="token punctuation"></</span>a</span><span class="token punctuation">></span></span>
|
||
</span></code></pre>
|
||
<p><code>v-on</code> 指令，用于监听 DOM 事件，oSomething 是事件名</p>
|
||
</div></div></div><div class="wrap"><div class="wrap-header h3wrap"><h3 id="指令动态参数-v26"><a aria-hidden="true" tabindex="-1" href="#指令动态参数-v26"><span class="icon icon-link"></span></a>指令动态参数 <strong>v2.6</strong></h3><div class="wrap-body">
|
||
<pre class="language-html"><code class="language-html code-highlight"><span class="code-line"><span class="token tag"><span class="token tag"><span class="token punctuation"><</span>a</span> <span class="token attr-name"><span class="token namespace">v-on:</span>[eventName]</span><span class="token attr-value"><span class="token punctuation attr-equals">=</span><span class="token punctuation">"</span>doSomething<span class="token punctuation">"</span></span><span class="token punctuation">></span></span>...<span class="token tag"><span class="token tag"><span class="token punctuation"></</span>a</span><span class="token punctuation">></span></span>
|
||
</span></code></pre>
|
||
<p>当 <code>eventName</code> 的值为 <code>focus</code> 时，<code>v-on:[eventName]</code> 将等价于 <code>v-on:focus</code></p>
|
||
</div></div></div><div class="wrap"><div class="wrap-header h3wrap"><h3 id="指令修饰符"><a aria-hidden="true" tabindex="-1" href="#指令修饰符"><span class="icon icon-link"></span></a>指令修饰符</h3><div class="wrap-body">
|
||
<pre class="language-html"><code class="language-html code-highlight"><span class="code-line"><span class="token tag"><span class="token tag"><span class="token punctuation"><</span>form</span> <span class="token attr-name"><span class="token namespace">v-on:</span>submit.prevent</span><span class="token attr-value"><span class="token punctuation attr-equals">=</span><span class="token punctuation">"</span>onSubmit<span class="token punctuation">"</span></span><span class="token punctuation">></span></span>
|
||
</span><span class="code-line"> ...
|
||
</span><span class="code-line"><span class="token tag"><span class="token tag"><span class="token punctuation"></</span>form</span><span class="token punctuation">></span></span>
|
||
</span></code></pre>
|
||
<p><code>.prevent</code> 修饰符告诉 <code>v-on</code> 指令对于触发的事件调用 <code>event.preventDefault()</code></p>
|
||
</div></div></div><div class="wrap"><div class="wrap-header h3wrap"><h3 id="指令缩写"><a aria-hidden="true" tabindex="-1" href="#指令缩写"><span class="icon icon-link"></span></a>指令缩写</h3><div class="wrap-body">
|
||
<pre class="language-html"><code class="language-html code-highlight"><span class="code-line"><span class="token comment"><!-- 完整语法 --></span>
|
||
</span><span class="code-line"><span class="token tag"><span class="token tag"><span class="token punctuation"><</span>a</span> <span class="token attr-name"><span class="token namespace">v-bind:</span>href</span><span class="token attr-value"><span class="token punctuation attr-equals">=</span><span class="token punctuation">"</span>url<span class="token punctuation">"</span></span><span class="token punctuation">></span></span>...<span class="token tag"><span class="token tag"><span class="token punctuation"></</span>a</span><span class="token punctuation">></span></span>
|
||
</span><span class="code-line"><span class="token comment"><!-- 缩写 --></span>
|
||
</span><span class="code-line"><span class="token tag"><span class="token tag"><span class="token punctuation"><</span>a</span> <span class="token attr-name">:href</span><span class="token attr-value"><span class="token punctuation attr-equals">=</span><span class="token punctuation">"</span>url<span class="token punctuation">"</span></span><span class="token punctuation">></span></span>...<span class="token tag"><span class="token tag"><span class="token punctuation"></</span>a</span><span class="token punctuation">></span></span>
|
||
</span><span class="code-line"><span class="token comment"><!-- 动态参数的缩写 (2.6.0+) --></span>
|
||
</span><span class="code-line"><span class="token tag"><span class="token tag"><span class="token punctuation"><</span>a</span> <span class="token attr-name">:[key]</span><span class="token attr-value"><span class="token punctuation attr-equals">=</span><span class="token punctuation">"</span>url<span class="token punctuation">"</span></span><span class="token punctuation">></span></span> ... <span class="token tag"><span class="token tag"><span class="token punctuation"></</span>a</span><span class="token punctuation">></span></span>
|
||
</span></code></pre>
|
||
</div></div></div></div></div><div class="wrap"><div class="wrap-header h2wrap"><h2 id="class-与-style-绑定"><a aria-hidden="true" tabindex="-1" href="#class-与-style-绑定"><span class="icon icon-link"></span></a>Class 与 Style 绑定</h2><div class="wrap-body">
|
||
</div></div><div class="h2wrap-body"><div class="wrap"><div class="wrap-header h3wrap"><h3 id="对象语法"><a aria-hidden="true" tabindex="-1" href="#对象语法"><span class="icon icon-link"></span></a>对象语法</h3><div class="wrap-body">
|
||
<pre class="language-html"><code class="language-html code-highlight"><span class="code-line"><span class="token tag"><span class="token tag"><span class="token punctuation"><</span>div</span> <span class="token attr-name"><span class="token namespace">v-bind:</span>class</span><span class="token attr-value"><span class="token punctuation attr-equals">=</span><span class="token punctuation">"</span>{ active: isActive }<span class="token punctuation">"</span></span><span class="token punctuation">></span></span>
|
||
</span><span class="code-line">
|
||
</span><span class="code-line"><span class="token tag"><span class="token tag"><span class="token punctuation"></</span>div</span><span class="token punctuation">></span></span>
|
||
</span></code></pre>
|
||
<p>传给 <code>v-bind:class</code> 一个对象，以动态地切换 <code>class</code></p>
|
||
</div></div></div><div class="wrap row-span-3"><div class="wrap-header h3wrap"><h3 id="与普通的-class-属性共存"><a aria-hidden="true" tabindex="-1" href="#与普通的-class-属性共存"><span class="icon icon-link"></span></a>与普通的 class 属性共存</h3><div class="wrap-body">
|
||
<!--rehype:wrap-class=row-span-3-->
|
||
<pre class="language-html"><code class="language-html code-highlight"><span class="code-line"><span class="token tag"><span class="token tag"><span class="token punctuation"><</span>div</span>
|
||
</span></span><span class="code-line highlight-line"><span class="token tag"> <span class="token attr-name">class</span><span class="token attr-value"><span class="token punctuation attr-equals">=</span><span class="token punctuation">"</span>static<span class="token punctuation">"</span></span>
|
||
</span></span><span class="code-line"><span class="token tag"> <span class="token attr-name"><span class="token namespace">v-bind:</span>class</span><span class="token attr-value"><span class="token punctuation attr-equals">=</span><span class="token punctuation">"</span>{
|
||
</span></span></span><span class="code-line"><span class="token tag"><span class="token attr-value"> active: isActive,
|
||
</span></span></span><span class="code-line"><span class="token tag"><span class="token attr-value"> 'text-danger': hasError
|
||
</span></span></span><span class="code-line"><span class="token tag"><span class="token attr-value"> }<span class="token punctuation">"</span></span>
|
||
</span></span><span class="code-line"><span class="token tag"><span class="token punctuation">></span></span><span class="token tag"><span class="token tag"><span class="token punctuation"></</span>div</span><span class="token punctuation">></span></span>
|
||
</span></code></pre>
|
||
<p>如下 data</p>
|
||
<pre class="language-js"><code class="language-js code-highlight"><span class="code-line"><span class="token literal-property property">data</span><span class="token operator">:</span> <span class="token punctuation">{</span>
|
||
</span><span class="code-line"> <span class="token literal-property property">isActive</span><span class="token operator">:</span> <span class="token boolean">true</span><span class="token punctuation">,</span>
|
||
</span><span class="code-line"> <span class="token literal-property property">hasError</span><span class="token operator">:</span> <span class="token boolean">false</span>
|
||
</span><span class="code-line"><span class="token punctuation">}</span>
|
||
</span></code></pre>
|
||
<p>结果渲染为</p>
|
||
<pre class="language-html"><code class="language-html code-highlight"><span class="code-line"><span class="token tag"><span class="token tag"><span class="token punctuation"><</span>div</span> <span class="token attr-name">class</span><span class="token attr-value"><span class="token punctuation attr-equals">=</span><span class="token punctuation">"</span>static active<span class="token punctuation">"</span></span><span class="token punctuation">></span></span><span class="token tag"><span class="token tag"><span class="token punctuation"></</span>div</span><span class="token punctuation">></span></span>
|
||
</span></code></pre>
|
||
</div></div></div><div class="wrap row-span-3"><div class="wrap-header h3wrap"><h3 id="绑定的数据对象不必内联定义在模板里"><a aria-hidden="true" tabindex="-1" href="#绑定的数据对象不必内联定义在模板里"><span class="icon icon-link"></span></a>绑定的数据对象不必内联定义在模板里</h3><div class="wrap-body">
|
||
<!--rehype:wrap-class=row-span-3-->
|
||
<pre class="language-html"><code class="language-html code-highlight"><span class="code-line"><span class="token tag"><span class="token tag"><span class="token punctuation"><</span>div</span> <span class="token attr-name"><span class="token namespace">v-bind:</span>class</span><span class="token attr-value"><span class="token punctuation attr-equals">=</span><span class="token punctuation">"</span>classObject<span class="token punctuation">"</span></span><span class="token punctuation">></span></span><span class="token tag"><span class="token tag"><span class="token punctuation"></</span>div</span><span class="token punctuation">></span></span>
|
||
</span></code></pre>
|
||
<p>如下 data</p>
|
||
<pre class="language-js"><code class="language-js code-highlight"><span class="code-line"><span class="token literal-property property">data</span><span class="token operator">:</span> <span class="token punctuation">{</span>
|
||
</span><span class="code-line"> <span class="token literal-property property">classObject</span><span class="token operator">:</span> <span class="token punctuation">{</span>
|
||
</span><span class="code-line"> <span class="token literal-property property">active</span><span class="token operator">:</span> <span class="token boolean">true</span><span class="token punctuation">,</span>
|
||
</span><span class="code-line"> <span class="token string-property property">'text-danger'</span><span class="token operator">:</span> <span class="token boolean">false</span>
|
||
</span><span class="code-line"> <span class="token punctuation">}</span>
|
||
</span><span class="code-line"><span class="token punctuation">}</span>
|
||
</span></code></pre>
|
||
<p>结果渲染为</p>
|
||
<pre class="language-html"><code class="language-html code-highlight"><span class="code-line"><span class="token tag"><span class="token tag"><span class="token punctuation"><</span>div</span> <span class="token attr-name">class</span><span class="token attr-value"><span class="token punctuation attr-equals">=</span><span class="token punctuation">"</span>static active<span class="token punctuation">"</span></span><span class="token punctuation">></span></span><span class="token tag"><span class="token tag"><span class="token punctuation"></</span>div</span><span class="token punctuation">></span></span>
|
||
</span></code></pre>
|
||
</div></div></div><div class="wrap"><div class="wrap-header h3wrap"><h3 id="三元表达式"><a aria-hidden="true" tabindex="-1" href="#三元表达式"><span class="icon icon-link"></span></a>三元表达式</h3><div class="wrap-body">
|
||
<pre class="language-html"><code class="language-html code-highlight"><span class="code-line"><span class="token tag"><span class="token tag"><span class="token punctuation"><</span>div</span> <span class="token attr-name"><span class="token namespace">v-bind:</span>class</span><span class="token attr-value"><span class="token punctuation attr-equals">=</span><span class="token punctuation">"</span>[
|
||
</span></span></span><span class="code-line"><span class="token tag"><span class="token attr-value"> isActive ? activeClass : ''
|
||
</span></span></span><span class="code-line"><span class="token tag"><span class="token attr-value">]<span class="token punctuation">"</span></span><span class="token punctuation">></span></span>
|
||
</span><span class="code-line"><span class="token tag"><span class="token tag"><span class="token punctuation"></</span>div</span><span class="token punctuation">></span></span>
|
||
</span></code></pre>
|
||
</div></div></div><div class="wrap"><div class="wrap-header h3wrap"><h3 id="数组"><a aria-hidden="true" tabindex="-1" href="#数组"><span class="icon icon-link"></span></a>数组</h3><div class="wrap-body">
|
||
<pre class="language-html"><code class="language-html code-highlight"><span class="code-line"><span class="token tag"><span class="token tag"><span class="token punctuation"><</span>div</span> <span class="token attr-name"><span class="token namespace">v-bind:</span>class</span><span class="token attr-value"><span class="token punctuation attr-equals">=</span><span class="token punctuation">"</span>[
|
||
</span></span></span><span class="code-line"><span class="token tag"><span class="token attr-value"> { active: isActive }, errorClass
|
||
</span></span></span><span class="code-line"><span class="token tag"><span class="token attr-value">]<span class="token punctuation">"</span></span><span class="token punctuation">></span></span><span class="token tag"><span class="token tag"><span class="token punctuation"></</span>div</span><span class="token punctuation">></span></span>
|
||
</span></code></pre>
|
||
</div></div></div><div class="wrap"><div class="wrap-header h3wrap"><h3 id="数组语法"><a aria-hidden="true" tabindex="-1" href="#数组语法"><span class="icon icon-link"></span></a>数组语法</h3><div class="wrap-body">
|
||
<pre class="language-html"><code class="language-html code-highlight"><span class="code-line"><span class="token tag"><span class="token tag"><span class="token punctuation"><</span>div</span> <span class="token attr-name"><span class="token namespace">v-bind:</span>class</span><span class="token attr-value"><span class="token punctuation attr-equals">=</span><span class="token punctuation">"</span>[
|
||
</span></span></span><span class="code-line"><span class="token tag"><span class="token attr-value"> activeClass, errorClass
|
||
</span></span></span><span class="code-line"><span class="token tag"><span class="token attr-value">]<span class="token punctuation">"</span></span><span class="token punctuation">></span></span>
|
||
</span><span class="code-line"><span class="token tag"><span class="token tag"><span class="token punctuation"></</span>div</span><span class="token punctuation">></span></span>
|
||
</span></code></pre>
|
||
<p>如下 data</p>
|
||
<pre class="language-js"><code class="language-js code-highlight"><span class="code-line"><span class="token literal-property property">data</span><span class="token operator">:</span> <span class="token punctuation">{</span>
|
||
</span><span class="code-line"> <span class="token literal-property property">activeClass</span><span class="token operator">:</span> <span class="token string">'active'</span><span class="token punctuation">,</span>
|
||
</span><span class="code-line"> <span class="token literal-property property">errorClass</span><span class="token operator">:</span> <span class="token string">'text-danger'</span>
|
||
</span><span class="code-line"><span class="token punctuation">}</span>
|
||
</span></code></pre>
|
||
<p>结果渲染为</p>
|
||
<pre class="language-html"><code class="language-html code-highlight"><span class="code-line"><span class="token tag"><span class="token tag"><span class="token punctuation"><</span>div</span> <span class="token attr-name">class</span><span class="token attr-value"><span class="token punctuation attr-equals">=</span><span class="token punctuation">"</span>active text-danger<span class="token punctuation">"</span></span><span class="token punctuation">></span></span><span class="token tag"><span class="token tag"><span class="token punctuation"></</span>div</span><span class="token punctuation">></span></span>
|
||
</span></code></pre>
|
||
</div></div></div><div class="wrap"><div class="wrap-header h3wrap"><h3 id="内联样式"><a aria-hidden="true" tabindex="-1" href="#内联样式"><span class="icon icon-link"></span></a>内联样式</h3><div class="wrap-body">
|
||
<pre class="language-html"><code class="language-html code-highlight"><span class="code-line"><span class="token tag"><span class="token tag"><span class="token punctuation"><</span>div</span> <span class="token attr-name"><span class="token namespace">v-bind:</span>style</span><span class="token attr-value"><span class="token punctuation attr-equals">=</span><span class="token punctuation">"</span>{
|
||
</span></span></span><span class="code-line"><span class="token tag"><span class="token attr-value"> color: activeColor,
|
||
</span></span></span><span class="code-line"><span class="token tag"><span class="token attr-value"> fontSize: fontSize + 'px'
|
||
</span></span></span><span class="code-line"><span class="token tag"><span class="token attr-value">}<span class="token punctuation">"</span></span><span class="token punctuation">></span></span><span class="token tag"><span class="token tag"><span class="token punctuation"></</span>div</span><span class="token punctuation">></span></span>
|
||
</span></code></pre>
|
||
<p>如下 data</p>
|
||
<pre class="language-js"><code class="language-js code-highlight"><span class="code-line"><span class="token literal-property property">data</span><span class="token operator">:</span> <span class="token punctuation">{</span>
|
||
</span><span class="code-line"> <span class="token literal-property property">activeColor</span><span class="token operator">:</span> <span class="token string">'red'</span><span class="token punctuation">,</span>
|
||
</span><span class="code-line"> <span class="token literal-property property">fontSize</span><span class="token operator">:</span> <span class="token number">30</span>
|
||
</span><span class="code-line"><span class="token punctuation">}</span>
|
||
</span></code></pre>
|
||
<p>结果渲染为</p>
|
||
<pre class="language-html"><code class="language-html code-highlight"><span class="code-line"><span class="token tag"><span class="token tag"><span class="token punctuation"><</span>div</span> <span class="token special-attr"><span class="token attr-name">style</span><span class="token attr-value"><span class="token punctuation attr-equals">=</span><span class="token punctuation">"</span><span class="token value css language-css"><span class="token property">color</span><span class="token punctuation">:</span> <span class="token color">red</span><span class="token punctuation">;</span> <span class="token property">font-size</span><span class="token punctuation">:</span> <span class="token number">30</span><span class="token unit">px</span><span class="token punctuation">;</span></span><span class="token punctuation">"</span></span></span><span class="token punctuation">></span></span><span class="token tag"><span class="token tag"><span class="token punctuation"></</span>div</span><span class="token punctuation">></span></span>
|
||
</span></code></pre>
|
||
</div></div></div><div class="wrap"><div class="wrap-header h3wrap"><h3 id="内联样式对象通常更好"><a aria-hidden="true" tabindex="-1" href="#内联样式对象通常更好"><span class="icon icon-link"></span></a>内联样式对象通常更好</h3><div class="wrap-body">
|
||
<pre class="language-html"><code class="language-html code-highlight"><span class="code-line"><span class="token tag"><span class="token tag"><span class="token punctuation"><</span>div</span> <span class="token attr-name"><span class="token namespace">v-bind:</span>style</span><span class="token attr-value"><span class="token punctuation attr-equals">=</span><span class="token punctuation">"</span>styleObject<span class="token punctuation">"</span></span><span class="token punctuation">></span></span><span class="token tag"><span class="token tag"><span class="token punctuation"></</span>div</span><span class="token punctuation">></span></span>
|
||
</span></code></pre>
|
||
<p>如下 data</p>
|
||
<pre class="language-js"><code class="language-js code-highlight"><span class="code-line"><span class="token literal-property property">data</span><span class="token operator">:</span> <span class="token punctuation">{</span>
|
||
</span><span class="code-line"> <span class="token literal-property property">styleObject</span><span class="token operator">:</span> <span class="token punctuation">{</span>
|
||
</span><span class="code-line"> <span class="token literal-property property">color</span><span class="token operator">:</span> <span class="token string">'red'</span><span class="token punctuation">,</span>
|
||
</span><span class="code-line"> <span class="token literal-property property">fontSize</span><span class="token operator">:</span> <span class="token string">'13px'</span>
|
||
</span><span class="code-line"> <span class="token punctuation">}</span>
|
||
</span><span class="code-line"><span class="token punctuation">}</span>
|
||
</span></code></pre>
|
||
<p>同样的，对象语法常常结合返回对象的计算属性使用</p>
|
||
</div></div></div><div class="wrap"><div class="wrap-header h3wrap"><h3 id="内联样式数组语法"><a aria-hidden="true" tabindex="-1" href="#内联样式数组语法"><span class="icon icon-link"></span></a>内联样式数组语法</h3><div class="wrap-body">
|
||
<pre class="language-html"><code class="language-html code-highlight"><span class="code-line"><span class="token tag"><span class="token tag"><span class="token punctuation"><</span>div</span> <span class="token attr-name"><span class="token namespace">v-bind:</span>style</span><span class="token attr-value"><span class="token punctuation attr-equals">=</span><span class="token punctuation">"</span>[
|
||
</span></span></span><span class="code-line"><span class="token tag"><span class="token attr-value"> baseStyles, overridingStyles
|
||
</span></span></span><span class="code-line"><span class="token tag"><span class="token attr-value">]<span class="token punctuation">"</span></span><span class="token punctuation">></span></span><span class="token tag"><span class="token tag"><span class="token punctuation"></</span>div</span><span class="token punctuation">></span></span>
|
||
</span></code></pre>
|
||
</div></div></div><div class="wrap"><div class="wrap-header h3wrap"><h3 id="内联样式多重值"><a aria-hidden="true" tabindex="-1" href="#内联样式多重值"><span class="icon icon-link"></span></a>内联样式多重值</h3><div class="wrap-body">
|
||
<pre class="language-html"><code class="language-html code-highlight"><span class="code-line"><span class="token tag"><span class="token tag"><span class="token punctuation"><</span>div</span> <span class="token attr-name">:style</span><span class="token attr-value"><span class="token punctuation attr-equals">=</span><span class="token punctuation">"</span>{
|
||
</span></span></span><span class="code-line"><span class="token tag"><span class="token attr-value"> display: ['-webkit-box', 'flex']
|
||
</span></span></span><span class="code-line"><span class="token tag"><span class="token attr-value">}<span class="token punctuation">"</span></span><span class="token punctuation">></span></span><span class="token tag"><span class="token tag"><span class="token punctuation"></</span>div</span><span class="token punctuation">></span></span>
|
||
</span></code></pre>
|
||
</div></div></div></div></div><div class="wrap"><div class="wrap-header h2wrap"><h2 id="条件渲染"><a aria-hidden="true" tabindex="-1" href="#条件渲染"><span class="icon icon-link"></span></a>条件渲染</h2><div class="wrap-body">
|
||
</div></div><div class="h2wrap-body"><div class="wrap"><div class="wrap-header h3wrap"><h3 id="v-if"><a aria-hidden="true" tabindex="-1" href="#v-if"><span class="icon icon-link"></span></a>v-if</h3><div class="wrap-body">
|
||
<pre class="language-html"><code class="language-html code-highlight"><span class="code-line"><span class="token tag"><span class="token tag"><span class="token punctuation"><</span>h1</span> <span class="token attr-name">v-if</span><span class="token attr-value"><span class="token punctuation attr-equals">=</span><span class="token punctuation">"</span>awesome<span class="token punctuation">"</span></span><span class="token punctuation">></span></span>Vue is awesome!<span class="token tag"><span class="token tag"><span class="token punctuation"></</span>h1</span><span class="token punctuation">></span></span>
|
||
</span><span class="code-line"><span class="token tag"><span class="token tag"><span class="token punctuation"><</span>h1</span> <span class="token attr-name">v-else</span><span class="token punctuation">></span></span>Oh no 😢<span class="token tag"><span class="token tag"><span class="token punctuation"></</span>h1</span><span class="token punctuation">></span></span>
|
||
</span></code></pre>
|
||
</div></div></div><div class="wrap row-span-2"><div class="wrap-header h3wrap"><h3 id="v-else-if"><a aria-hidden="true" tabindex="-1" href="#v-else-if"><span class="icon icon-link"></span></a>v-else-if</h3><div class="wrap-body">
|
||
<!--rehype:wrap-class=row-span-2-->
|
||
<pre class="language-html"><code class="language-html code-highlight"><span class="code-line"><span class="token tag"><span class="token tag"><span class="token punctuation"><</span>div</span> <span class="token attr-name">v-if</span><span class="token attr-value"><span class="token punctuation attr-equals">=</span><span class="token punctuation">"</span>type === 'A'<span class="token punctuation">"</span></span><span class="token punctuation">></span></span>A<span class="token tag"><span class="token tag"><span class="token punctuation"></</span>div</span><span class="token punctuation">></span></span>
|
||
</span><span class="code-line"><span class="token tag"><span class="token tag"><span class="token punctuation"><</span>div</span> <span class="token attr-name">v-else-if</span><span class="token attr-value"><span class="token punctuation attr-equals">=</span><span class="token punctuation">"</span>type === 'B'<span class="token punctuation">"</span></span><span class="token punctuation">></span></span>B<span class="token tag"><span class="token tag"><span class="token punctuation"></</span>div</span><span class="token punctuation">></span></span>
|
||
</span><span class="code-line"><span class="token tag"><span class="token tag"><span class="token punctuation"><</span>div</span> <span class="token attr-name">v-else-if</span><span class="token attr-value"><span class="token punctuation attr-equals">=</span><span class="token punctuation">"</span>type === 'C'<span class="token punctuation">"</span></span><span class="token punctuation">></span></span>C<span class="token tag"><span class="token tag"><span class="token punctuation"></</span>div</span><span class="token punctuation">></span></span>
|
||
</span><span class="code-line"><span class="token tag"><span class="token tag"><span class="token punctuation"><</span>div</span> <span class="token attr-name">v-else</span><span class="token punctuation">></span></span>
|
||
</span><span class="code-line"> Not A/B/C
|
||
</span><span class="code-line"><span class="token tag"><span class="token tag"><span class="token punctuation"></</span>div</span><span class="token punctuation">></span></span>
|
||
</span></code></pre>
|
||
<p><code>@2.1.0</code> 新增，必须紧跟在带 <code>v-if</code> 或者 <code>v-else-if</code> 的元素之后</p>
|
||
</div></div></div><div class="wrap row-span-2"><div class="wrap-header h3wrap"><h3 id="v-else"><a aria-hidden="true" tabindex="-1" href="#v-else"><span class="icon icon-link"></span></a>v-else</h3><div class="wrap-body">
|
||
<!--rehype:wrap-class=row-span-2-->
|
||
<pre class="language-html"><code class="language-html code-highlight"><span class="code-line"><span class="token tag"><span class="token tag"><span class="token punctuation"><</span>div</span> <span class="token attr-name">v-if</span><span class="token attr-value"><span class="token punctuation attr-equals">=</span><span class="token punctuation">"</span>Math.random() > 0.5<span class="token punctuation">"</span></span><span class="token punctuation">></span></span>
|
||
</span><span class="code-line"> 现在你看到我了
|
||
</span><span class="code-line"><span class="token tag"><span class="token tag"><span class="token punctuation"></</span>div</span><span class="token punctuation">></span></span>
|
||
</span><span class="code-line"><span class="token tag"><span class="token tag"><span class="token punctuation"><</span>div</span> <span class="token attr-name">v-else</span><span class="token punctuation">></span></span>
|
||
</span><span class="code-line"> 现在你看不见我了
|
||
</span><span class="code-line"><span class="token tag"><span class="token tag"><span class="token punctuation"></</span>div</span><span class="token punctuation">></span></span>
|
||
</span></code></pre>
|
||
<p><code>v-else</code> 元素必须紧跟在带 <code>v-if</code> 或者 <code>v-else-if</code> 的元素的后面</p>
|
||
</div></div></div><div class="wrap"><div class="wrap-header h3wrap"><h3 id="template-上使用-v-if-条件渲染分组"><a aria-hidden="true" tabindex="-1" href="#template-上使用-v-if-条件渲染分组"><span class="icon icon-link"></span></a><template> 上使用 v-if 条件渲染分组</h3><div class="wrap-body">
|
||
<pre class="language-html"><code class="language-html code-highlight"><span class="code-line"><span class="token tag"><span class="token tag"><span class="token punctuation"><</span>template</span> <span class="token attr-name">v-if</span><span class="token attr-value"><span class="token punctuation attr-equals">=</span><span class="token punctuation">"</span>ok<span class="token punctuation">"</span></span><span class="token punctuation">></span></span>
|
||
</span><span class="code-line"> <span class="token tag"><span class="token tag"><span class="token punctuation"><</span>p</span><span class="token punctuation">></span></span>Paragraph 1<span class="token tag"><span class="token tag"><span class="token punctuation"></</span>p</span><span class="token punctuation">></span></span>
|
||
</span><span class="code-line"><span class="token tag"><span class="token tag"><span class="token punctuation"></</span>template</span><span class="token punctuation">></span></span>
|
||
</span></code></pre>
|
||
</div></div></div><div class="wrap col-span-2"><div class="wrap-header h3wrap"><h3 id="用-key-管理可复用的元素"><a aria-hidden="true" tabindex="-1" href="#用-key-管理可复用的元素"><span class="icon icon-link"></span></a>用 key 管理可复用的元素</h3><div class="wrap-body">
|
||
<!--rehype:wrap-class=col-span-2-->
|
||
<pre class="language-html"><code class="language-html code-highlight"><span class="code-line"><span class="token tag"><span class="token tag"><span class="token punctuation"><</span>template</span> <span class="token attr-name">v-if</span><span class="token attr-value"><span class="token punctuation attr-equals">=</span><span class="token punctuation">"</span>loginType === 'username'<span class="token punctuation">"</span></span><span class="token punctuation">></span></span>
|
||
</span><span class="code-line"> <span class="token tag"><span class="token tag"><span class="token punctuation"><</span>label</span><span class="token punctuation">></span></span>Username<span class="token tag"><span class="token tag"><span class="token punctuation"></</span>label</span><span class="token punctuation">></span></span>
|
||
</span><span class="code-line"> <span class="token tag"><span class="token tag"><span class="token punctuation"><</span>input</span> <span class="token attr-name">placeholder</span><span class="token attr-value"><span class="token punctuation attr-equals">=</span><span class="token punctuation">"</span>输入用户名<span class="token punctuation">"</span></span> <span class="token attr-name">key</span><span class="token attr-value"><span class="token punctuation attr-equals">=</span><span class="token punctuation">"</span>username-input<span class="token punctuation">"</span></span><span class="token punctuation">></span></span>
|
||
</span><span class="code-line"><span class="token tag"><span class="token tag"><span class="token punctuation"></</span>template</span><span class="token punctuation">></span></span>
|
||
</span><span class="code-line"><span class="token tag"><span class="token tag"><span class="token punctuation"><</span>template</span> <span class="token attr-name">v-else</span><span class="token punctuation">></span></span>
|
||
</span><span class="code-line"> <span class="token tag"><span class="token tag"><span class="token punctuation"><</span>label</span><span class="token punctuation">></span></span>Email<span class="token tag"><span class="token tag"><span class="token punctuation"></</span>label</span><span class="token punctuation">></span></span>
|
||
</span><span class="code-line"> <span class="token tag"><span class="token tag"><span class="token punctuation"><</span>input</span> <span class="token attr-name">placeholder</span><span class="token attr-value"><span class="token punctuation attr-equals">=</span><span class="token punctuation">"</span>输入邮箱<span class="token punctuation">"</span></span> <span class="token attr-name">key</span><span class="token attr-value"><span class="token punctuation attr-equals">=</span><span class="token punctuation">"</span>email-input<span class="token punctuation">"</span></span><span class="token punctuation">></span></span>
|
||
</span><span class="code-line"><span class="token tag"><span class="token tag"><span class="token punctuation"></</span>template</span><span class="token punctuation">></span></span>
|
||
</span></code></pre>
|
||
</div></div></div><div class="wrap"><div class="wrap-header h3wrap"><h3 id="v-show"><a aria-hidden="true" tabindex="-1" href="#v-show"><span class="icon icon-link"></span></a>v-show</h3><div class="wrap-body">
|
||
<pre class="language-html"><code class="language-html code-highlight"><span class="code-line"><span class="token tag"><span class="token tag"><span class="token punctuation"><</span>h1</span> <span class="token attr-name">v-show</span><span class="token attr-value"><span class="token punctuation attr-equals">=</span><span class="token punctuation">"</span>ok<span class="token punctuation">"</span></span><span class="token punctuation">></span></span>
|
||
</span><span class="code-line"> Hello!
|
||
</span><span class="code-line"><span class="token tag"><span class="token tag"><span class="token punctuation"></</span>h1</span><span class="token punctuation">></span></span>
|
||
</span></code></pre>
|
||
<p>带有 <code>v-show</code> 的元素始终会被渲染并保留在 DOM 中，只是简单地切换元素的 <code>CSS</code> 属性 <code>display</code></p>
|
||
</div></div></div></div></div><div class="wrap"><div class="wrap-header h2wrap"><h2 id="列表渲染"><a aria-hidden="true" tabindex="-1" href="#列表渲染"><span class="icon icon-link"></span></a>列表渲染</h2><div class="wrap-body">
|
||
</div></div><div class="h2wrap-body"><div class="wrap"><div class="wrap-header h3wrap"><h3 id="v-for"><a aria-hidden="true" tabindex="-1" href="#v-for"><span class="icon icon-link"></span></a>v-for</h3><div class="wrap-body">
|
||
<pre class="language-html"><code class="language-html code-highlight"><span class="code-line"><span class="token tag"><span class="token tag"><span class="token punctuation"><</span>ul</span> <span class="token attr-name">id</span><span class="token attr-value"><span class="token punctuation attr-equals">=</span><span class="token punctuation">"</span>example-1<span class="token punctuation">"</span></span><span class="token punctuation">></span></span>
|
||
</span><span class="code-line"> <span class="token tag"><span class="token tag"><span class="token punctuation"><</span>li</span>
|
||
</span></span><span class="code-line highlight-line"><span class="token tag"> <span class="token attr-name">v-for</span><span class="token attr-value"><span class="token punctuation attr-equals">=</span><span class="token punctuation">"</span>item in items<span class="token punctuation">"</span></span>
|
||
</span></span><span class="code-line"><span class="token tag"> <span class="token attr-name">:key</span><span class="token attr-value"><span class="token punctuation attr-equals">=</span><span class="token punctuation">"</span>item.message<span class="token punctuation">"</span></span><span class="token punctuation">></span></span>
|
||
</span><span class="code-line"> {{ item.message }}
|
||
</span><span class="code-line"> <span class="token tag"><span class="token tag"><span class="token punctuation"></</span>li</span><span class="token punctuation">></span></span>
|
||
</span><span class="code-line"><span class="token tag"><span class="token tag"><span class="token punctuation"></</span>ul</span><span class="token punctuation">></span></span>
|
||
</span></code></pre>
|
||
<pre class="language-js"><code class="language-js code-highlight"><span class="code-line"><span class="token keyword">var</span> example1 <span class="token operator">=</span> <span class="token keyword">new</span> <span class="token class-name">Vue</span><span class="token punctuation">(</span><span class="token punctuation">{</span>
|
||
</span><span class="code-line"> <span class="token literal-property property">el</span><span class="token operator">:</span> <span class="token string">'#example-1'</span><span class="token punctuation">,</span>
|
||
</span><span class="code-line"> <span class="token literal-property property">data</span><span class="token operator">:</span> <span class="token punctuation">{</span>
|
||
</span><span class="code-line"> <span class="token literal-property property">items</span><span class="token operator">:</span> <span class="token punctuation">[</span>
|
||
</span><span class="code-line"> <span class="token punctuation">{</span> <span class="token literal-property property">message</span><span class="token operator">:</span> <span class="token string">'Foo'</span> <span class="token punctuation">}</span><span class="token punctuation">,</span>
|
||
</span><span class="code-line"> <span class="token punctuation">{</span> <span class="token literal-property property">message</span><span class="token operator">:</span> <span class="token string">'Bar'</span> <span class="token punctuation">}</span>
|
||
</span><span class="code-line"> <span class="token punctuation">]</span>
|
||
</span><span class="code-line"> <span class="token punctuation">}</span>
|
||
</span><span class="code-line"><span class="token punctuation">}</span><span class="token punctuation">)</span>
|
||
</span></code></pre>
|
||
</div></div></div><div class="wrap"><div class="wrap-header h3wrap"><h3 id="v-for-可选的第二个参数索引"><a aria-hidden="true" tabindex="-1" href="#v-for-可选的第二个参数索引"><span class="icon icon-link"></span></a>v-for 可选的第二个参数(索引)</h3><div class="wrap-body">
|
||
<pre class="language-html"><code class="language-html code-highlight"><span class="code-line"><span class="token tag"><span class="token tag"><span class="token punctuation"><</span>li</span> <span class="token attr-name">v-for</span><span class="token attr-value"><span class="token punctuation attr-equals">=</span><span class="token punctuation">"</span>(item, index) in items<span class="token punctuation">"</span></span><span class="token punctuation">></span></span>
|
||
</span><span class="code-line highlight-line"> {{ index }}
|
||
</span><span class="code-line"> {{ item.message }}
|
||
</span><span class="code-line"><span class="token tag"><span class="token tag"><span class="token punctuation"></</span>li</span><span class="token punctuation">></span></span>
|
||
</span></code></pre>
|
||
<p>如下 <code>data</code></p>
|
||
<pre class="language-js"><code class="language-js code-highlight"><span class="code-line"><span class="token literal-property property">data</span><span class="token operator">:</span> <span class="token punctuation">{</span>
|
||
</span><span class="code-line"> <span class="token literal-property property">items</span><span class="token operator">:</span> <span class="token punctuation">[</span>
|
||
</span><span class="code-line"> <span class="token punctuation">{</span> <span class="token literal-property property">message</span><span class="token operator">:</span> <span class="token string">'Foo'</span> <span class="token punctuation">}</span><span class="token punctuation">,</span>
|
||
</span><span class="code-line"> <span class="token punctuation">{</span> <span class="token literal-property property">message</span><span class="token operator">:</span> <span class="token string">'Bar'</span> <span class="token punctuation">}</span>
|
||
</span><span class="code-line"> <span class="token punctuation">]</span>
|
||
</span><span class="code-line"><span class="token punctuation">}</span>
|
||
</span></code></pre>
|
||
<p>也可以用 <code>of</code> 替代 <code>in</code> 作为分隔符</p>
|
||
<pre class="language-html"><code class="language-html code-highlight"><span class="code-line"><span class="token tag"><span class="token tag"><span class="token punctuation"><</span>div</span> <span class="token attr-name">v-for</span><span class="token attr-value"><span class="token punctuation attr-equals">=</span><span class="token punctuation">"</span>item of items<span class="token punctuation">"</span></span><span class="token punctuation">></span></span><span class="token tag"><span class="token tag"><span class="token punctuation"></</span>div</span><span class="token punctuation">></span></span>
|
||
</span></code></pre>
|
||
</div></div></div><div class="wrap row-span-2"><div class="wrap-header h3wrap"><h3 id="v-for-使用对象"><a aria-hidden="true" tabindex="-1" href="#v-for-使用对象"><span class="icon icon-link"></span></a>v-for 使用对象</h3><div class="wrap-body">
|
||
<!--rehype:wrap-class=row-span-2-->
|
||
<pre class="language-html"><code class="language-html code-highlight"><span class="code-line"><span class="token tag"><span class="token tag"><span class="token punctuation"><</span>li</span> <span class="token attr-name">v-for</span><span class="token attr-value"><span class="token punctuation attr-equals">=</span><span class="token punctuation">"</span>value in object<span class="token punctuation">"</span></span><span class="token punctuation">></span></span>
|
||
</span><span class="code-line"> {{ value }}
|
||
</span><span class="code-line"><span class="token tag"><span class="token tag"><span class="token punctuation"></</span>li</span><span class="token punctuation">></span></span>
|
||
</span></code></pre>
|
||
<p>如下 data</p>
|
||
<pre class="language-js"><code class="language-js code-highlight"><span class="code-line"><span class="token literal-property property">data</span><span class="token operator">:</span> <span class="token punctuation">{</span>
|
||
</span><span class="code-line"> <span class="token literal-property property">object</span><span class="token operator">:</span> <span class="token punctuation">{</span>
|
||
</span><span class="code-line"> <span class="token literal-property property">title</span><span class="token operator">:</span> <span class="token string">'How to do lists in Vue'</span><span class="token punctuation">,</span>
|
||
</span><span class="code-line"> <span class="token literal-property property">author</span><span class="token operator">:</span> <span class="token string">'Jane Doe'</span><span class="token punctuation">,</span>
|
||
</span><span class="code-line"> <span class="token literal-property property">publishedAt</span><span class="token operator">:</span> <span class="token string">'2016-04-10'</span>
|
||
</span><span class="code-line"> <span class="token punctuation">}</span>
|
||
</span><span class="code-line"><span class="token punctuation">}</span>
|
||
</span></code></pre>
|
||
<p>渲染结果</p>
|
||
<pre><code class="code-highlight"><span class="code-line">How to do lists in Vue
|
||
</span><span class="code-line">Jane Doe
|
||
</span><span class="code-line">2016-04-10
|
||
</span></code></pre>
|
||
<p>提供第二个的参数为 property 名称 (也就是键名)</p>
|
||
<pre class="language-html"><code class="language-html code-highlight"><span class="code-line"><span class="token tag"><span class="token tag"><span class="token punctuation"><</span>div</span> <span class="token attr-name">v-for</span><span class="token attr-value"><span class="token punctuation attr-equals">=</span><span class="token punctuation">"</span>(value, name) in object<span class="token punctuation">"</span></span><span class="token punctuation">></span></span>
|
||
</span><span class="code-line"> {{ name }}: {{ value }}
|
||
</span><span class="code-line"><span class="token tag"><span class="token tag"><span class="token punctuation"></</span>div</span><span class="token punctuation">></span></span>
|
||
</span></code></pre>
|
||
<p>还可以用第三个参数作为索引</p>
|
||
<pre class="language-html"><code class="language-html code-highlight"><span class="code-line"><span class="token tag"><span class="token tag"><span class="token punctuation"><</span>div</span> <span class="token attr-name">v-for</span><span class="token attr-value"><span class="token punctuation attr-equals">=</span><span class="token punctuation">"</span>(value,name,index) in object<span class="token punctuation">"</span></span><span class="token punctuation">></span></span>
|
||
</span><span class="code-line"> {{ index }}. {{ name }}: {{ value }}
|
||
</span><span class="code-line"><span class="token tag"><span class="token tag"><span class="token punctuation"></</span>div</span><span class="token punctuation">></span></span>
|
||
</span></code></pre>
|
||
</div></div></div><div class="wrap"><div class="wrap-header h3wrap"><h3 id="v-forv-if"><a aria-hidden="true" tabindex="-1" href="#v-forv-if"><span class="icon icon-link"></span></a>v-for/v-if</h3><div class="wrap-body">
|
||
<pre class="language-html"><code class="language-html code-highlight"><span class="code-line"><span class="token tag"><span class="token tag"><span class="token punctuation"><</span>li</span>
|
||
</span></span><span class="code-line highlight-line"><span class="token tag"> <span class="token attr-name">v-for</span><span class="token attr-value"><span class="token punctuation attr-equals">=</span><span class="token punctuation">"</span>todo in todos<span class="token punctuation">"</span></span>
|
||
</span></span><span class="code-line highlight-line"><span class="token tag"> <span class="token attr-name">v-if</span><span class="token attr-value"><span class="token punctuation attr-equals">=</span><span class="token punctuation">"</span>!todo.isComplete<span class="token punctuation">"</span></span>
|
||
</span></span><span class="code-line"><span class="token tag"><span class="token punctuation">></span></span>
|
||
</span><span class="code-line"> {{ todo }}
|
||
</span><span class="code-line"><span class="token tag"><span class="token tag"><span class="token punctuation"></</span>li</span><span class="token punctuation">></span></span>
|
||
</span></code></pre>
|
||
<p>只渲染未完成的 todo，下面加上 <code>v-else</code> 示例</p>
|
||
<pre class="language-html"><code class="language-html code-highlight"><span class="code-line"><span class="token tag"><span class="token tag"><span class="token punctuation"><</span>ul</span> <span class="token attr-name">v-if</span><span class="token attr-value"><span class="token punctuation attr-equals">=</span><span class="token punctuation">"</span>todos.length<span class="token punctuation">"</span></span><span class="token punctuation">></span></span>
|
||
</span><span class="code-line"> <span class="token tag"><span class="token tag"><span class="token punctuation"><</span>li</span> <span class="token attr-name">v-for</span><span class="token attr-value"><span class="token punctuation attr-equals">=</span><span class="token punctuation">"</span>todo in todos<span class="token punctuation">"</span></span><span class="token punctuation">></span></span>
|
||
</span><span class="code-line"> {{ todo }}
|
||
</span><span class="code-line"> <span class="token tag"><span class="token tag"><span class="token punctuation"></</span>li</span><span class="token punctuation">></span></span>
|
||
</span><span class="code-line"><span class="token tag"><span class="token tag"><span class="token punctuation"></</span>ul</span><span class="token punctuation">></span></span>
|
||
</span><span class="code-line"><span class="token tag"><span class="token tag"><span class="token punctuation"><</span>p</span> <span class="token attr-name">v-else</span><span class="token punctuation">></span></span>No todos left!<span class="token tag"><span class="token tag"><span class="token punctuation"></</span>p</span><span class="token punctuation">></span></span>
|
||
</span></code></pre>
|
||
</div></div></div><div class="wrap"><div class="wrap-header h3wrap"><h3 id="组件上使用-v-for"><a aria-hidden="true" tabindex="-1" href="#组件上使用-v-for"><span class="icon icon-link"></span></a>组件上使用 v-for</h3><div class="wrap-body">
|
||
<pre class="language-html"><code class="language-html code-highlight"><span class="code-line"><span class="token tag"><span class="token tag"><span class="token punctuation"><</span>my-component</span>
|
||
</span></span><span class="code-line"><span class="token tag"> <span class="token attr-name">v-for</span><span class="token attr-value"><span class="token punctuation attr-equals">=</span><span class="token punctuation">"</span>(item, index) in items<span class="token punctuation">"</span></span>
|
||
</span></span><span class="code-line"><span class="token tag"> <span class="token attr-name"><span class="token namespace">v-bind:</span>item</span><span class="token attr-value"><span class="token punctuation attr-equals">=</span><span class="token punctuation">"</span>item<span class="token punctuation">"</span></span>
|
||
</span></span><span class="code-line"><span class="token tag"> <span class="token attr-name"><span class="token namespace">v-bind:</span>index</span><span class="token attr-value"><span class="token punctuation attr-equals">=</span><span class="token punctuation">"</span>index<span class="token punctuation">"</span></span>
|
||
</span></span><span class="code-line"><span class="token tag"> <span class="token attr-name"><span class="token namespace">v-bind:</span>key</span><span class="token attr-value"><span class="token punctuation attr-equals">=</span><span class="token punctuation">"</span>item.id<span class="token punctuation">"</span></span>
|
||
</span></span><span class="code-line"><span class="token tag"><span class="token punctuation">></span></span><span class="token tag"><span class="token tag"><span class="token punctuation"></</span>my-component</span><span class="token punctuation">></span></span>
|
||
</span></code></pre>
|
||
<p><code>2.2.0+</code> 的版本里，当在组件上使用 <code>v-for</code> 时，<code>key</code> 现在是必须的</p>
|
||
</div></div></div></div></div><div class="wrap"><div class="wrap-header h2wrap"><h2 id="vue-2-api-参考"><a aria-hidden="true" tabindex="-1" href="#vue-2-api-参考"><span class="icon icon-link"></span></a>Vue 2 API 参考</h2><div class="wrap-body">
|
||
</div></div><div class="h2wrap-body"><div class="wrap row-span-2"><div class="wrap-header h3wrap"><h3 id="全局配置"><a aria-hidden="true" tabindex="-1" href="#全局配置"><span class="icon icon-link"></span></a>全局配置</h3><div class="wrap-body">
|
||
<!--rehype:wrap-class=row-span-2-->
|
||
|
||
|
||
|
||
|
||
|
||
|
||
|
||
|
||
|
||
|
||
|
||
|
||
|
||
|
||
|
||
|
||
|
||
|
||
|
||
|
||
|
||
|
||
|
||
|
||
|
||
|
||
|
||
|
||
|
||
|
||
|
||
|
||
|
||
|
||
|
||
|
||
|
||
|
||
|
||
|
||
|
||
|
||
|
||
|
||
|
||
<table><thead><tr><th align="left">:-</th><th align="left">:-</th></tr></thead><tbody><tr><td align="left"><code>silent</code></td><td align="left">取消所有的日志与警告 <a href="https://v2.cn.vuejs.org/v2/api/#silent">#</a></td></tr><tr><td align="left"><code>optionMergeStrategies</code></td><td align="left">自定义合并策略的选项 <a href="https://v2.cn.vuejs.org/v2/api/#optionMergeStrategies">#</a></td></tr><tr><td align="left"><code>devtools</code></td><td align="left">是否允许 <a href="https://github.com/vuejs/vue-devtools">devtools</a> 检查 <a href="https://v2.cn.vuejs.org/v2/api/#devtools">#</a></td></tr><tr><td align="left"><code>errorHandler</code></td><td align="left">未捕获错误的处理函数 <em>(开发模式生效)</em> <a href="https://v2.cn.vuejs.org/v2/api/#errorHandler">#</a></td></tr><tr><td align="left"><code>warnHandler</code> <em>(2.4.0)</em></td><td align="left">运行时警告处理函数 <a href="https://v2.cn.vuejs.org/v2/api/#warnHandler">#</a></td></tr><tr><td align="left"><code>ignoredElements</code></td><td align="left">忽略 Vue 之外的 <em>(自定义元素)</em> <a href="https://v2.cn.vuejs.org/v2/api/#ignoredElements">#</a></td></tr><tr><td align="left"><code>keyCodes</code></td><td align="left"><code>v-on</code> 自定义键位别名 <a href="https://v2.cn.vuejs.org/v2/api/#keyCodes">#</a></td></tr><tr><td align="left"><code>performance</code> <em>(2.2.0)</em></td><td align="left">性能追踪 <a href="https://v2.cn.vuejs.org/v2/api/#performance">#</a></td></tr><tr><td align="left"><code>productionTip</code> <em>(2.2.0)</em></td><td align="left">是否生成生产提示 <a href="https://v2.cn.vuejs.org/v2/api/#productionTip">#</a></td></tr></tbody></table>
|
||
</div></div></div><div class="wrap row-span-2"><div class="wrap-header h3wrap"><h3 id="全局-api"><a aria-hidden="true" tabindex="-1" href="#全局-api"><span class="icon icon-link"></span></a>全局 API</h3><div class="wrap-body">
|
||
<!--rehype:wrap-class=row-span-2-->
|
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|
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<table><thead><tr><th align="left">:-</th><th align="left">:-</th></tr></thead><tbody><tr><td align="left"><code>Vue.extend</code></td><td align="left">Vue 构造器，创建一个“子类” <a href="https://v2.cn.vuejs.org/v2/api/#Vue-extend">#</a></td></tr><tr><td align="left"><code>Vue.nextTick</code></td><td align="left">执行延迟回调 <a href="https://v2.cn.vuejs.org/v2/api/#Vue-nextTick">#</a></td></tr><tr><td align="left"><code>Vue.set</code></td><td align="left">向响应式对象中添加一个属性 <a href="https://v2.cn.vuejs.org/v2/api/#Vue-set">#</a></td></tr><tr><td align="left"><code>Vue.delete</code></td><td align="left">删除对象的 property <a href="https://v2.cn.vuejs.org/v2/api/#Vue-delete">#</a></td></tr><tr><td align="left"><code>Vue.directive</code></td><td align="left">注册或获取全局指令 <a href="https://v2.cn.vuejs.org/v2/api/#Vue-directive">#</a></td></tr><tr><td align="left"><code>Vue.filter</code></td><td align="left">注册或获取全局过滤器 <a href="https://v2.cn.vuejs.org/v2/api/#Vue-filter">#</a></td></tr><tr><td align="left"><code>Vue.component</code></td><td align="left">注册或获取全局组件 <a href="https://v2.cn.vuejs.org/v2/api/#Vue-component">#</a></td></tr><tr><td align="left"><code>Vue.use</code></td><td align="left">安装 Vue.js 插件 <a href="https://v2.cn.vuejs.org/v2/api/#Vue-use">#</a></td></tr><tr><td align="left"><code>Vue.mixin</code></td><td align="left">全局注册一个混入 <a href="https://v2.cn.vuejs.org/v2/api/#Vue-mixin">#</a></td></tr><tr><td align="left"><code>Vue.compile</code></td><td align="left">将模板字符串编译成 render 函数 <a href="https://v2.cn.vuejs.org/v2/api/#Vue-compile">#</a></td></tr><tr><td align="left"><code>Vue.observable</code> <em>(2.6.0)</em></td><td align="left">让一个对象可响应 <a href="https://v2.cn.vuejs.org/v2/api/#Vue-observable">#</a></td></tr><tr><td align="left"><code>Vue.version</code></td><td align="left">Vue 安装版本号 <a href="https://v2.cn.vuejs.org/v2/api/#Vue-version">#</a></td></tr></tbody></table>
|
||
</div></div></div><div class="wrap"><div class="wrap-header h3wrap"><h3 id="数据"><a aria-hidden="true" tabindex="-1" href="#数据"><span class="icon icon-link"></span></a>数据</h3><div class="wrap-body">
|
||
|
||
|
||
|
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|
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|
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|
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|
||
<table><thead><tr><th align="left">:-</th><th align="left">:-</th></tr></thead><tbody><tr><td align="left"><code>data</code></td><td align="left">实例的数据对象 <a href="https://v2.cn.vuejs.org/v2/api/#data">#</a></td></tr><tr><td align="left"><code>props</code></td><td align="left">接收来自父组件的数据 <a href="https://v2.cn.vuejs.org/v2/api/#props">#</a></td></tr><tr><td align="left"><code>propsData</code></td><td align="left">创建实例时传递 props <a href="https://v2.cn.vuejs.org/v2/api/#propsData">#</a></td></tr><tr><td align="left"><code>computed</code></td><td align="left">计算属性将被混入到 Vue 实例中 <a href="https://v2.cn.vuejs.org/v2/api/#computed">#</a></td></tr><tr><td align="left"><code>methods</code></td><td align="left">将被混入到 Vue 实例中 <a href="https://v2.cn.vuejs.org/v2/api/#methods">#</a></td></tr><tr><td align="left"><code>watch</code></td><td align="left">对象键是观察的表达式，值是回调函数 <a href="https://v2.cn.vuejs.org/v2/api/#watch">#</a></td></tr></tbody></table>
|
||
</div></div></div><div class="wrap"><div class="wrap-header h3wrap"><h3 id="dom"><a aria-hidden="true" tabindex="-1" href="#dom"><span class="icon icon-link"></span></a>DOM</h3><div class="wrap-body">
|
||
|
||
|
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|
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|
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|
||
<table><thead><tr><th align="left">:-</th><th align="left">:-</th></tr></thead><tbody><tr><td align="left"><code>el</code></td><td align="left">实例的挂载目标 <a href="https://v2.cn.vuejs.org/v2/api/#el">#</a></td></tr><tr><td align="left"><code>template</code></td><td align="left">字符串模板作为 Vue 实例的标识使用 <a href="https://v2.cn.vuejs.org/v2/api/#template">#</a></td></tr><tr><td align="left"><code>render</code></td><td align="left">字符串模板的代替方案 <a href="https://v2.cn.vuejs.org/v2/api/#render">#</a></td></tr><tr><td align="left"><code>renderError</code> <em>(2.2.0)</em></td><td align="left"><code>render</code>错误时提供另一种渲染 <a href="https://v2.cn.vuejs.org/v2/api/#renderError">#</a></td></tr></tbody></table>
|
||
</div></div></div><div class="wrap row-span-2"><div class="wrap-header h3wrap"><h3 id="生命周期钩子"><a aria-hidden="true" tabindex="-1" href="#生命周期钩子"><span class="icon icon-link"></span></a>生命周期钩子</h3><div class="wrap-body">
|
||
<!--rehype:wrap-class=row-span-2-->
|
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|
||
<table><thead><tr><th align="left">:-</th><th align="left">:-</th></tr></thead><tbody><tr><td align="left"><code>beforeCreate</code></td><td align="left">实例初始化之后 <a href="https://v2.cn.vuejs.org/v2/api/#beforeCreate">#</a></td></tr><tr><td align="left"><code>created</code></td><td align="left">实例创建完成后被立即同步调用 <a href="https://v2.cn.vuejs.org/v2/api/#created">#</a></td></tr><tr><td align="left"><code>beforeMount</code></td><td align="left">在挂载开始之前被调用 <a href="https://v2.cn.vuejs.org/v2/api/#beforeMount">#</a></td></tr><tr><td align="left"><code>mounted</code></td><td align="left">实例被挂载后调用 <a href="https://v2.cn.vuejs.org/v2/api/#mounted">#</a></td></tr><tr><td align="left"><code>beforeUpdate</code></td><td align="left">数据改变后 DOM 更新之前调用 <a href="https://v2.cn.vuejs.org/v2/api/#beforeUpdate">#</a></td></tr><tr><td align="left"><code>updated</code></td><td align="left">数据更改更新完毕之后被调用 <a href="https://v2.cn.vuejs.org/v2/api/#updated">#</a></td></tr><tr><td align="left"><code>activated</code></td><td align="left">keep-alive 缓存组件激活时调用 <a href="https://v2.cn.vuejs.org/v2/api/#activated">#</a></td></tr><tr><td align="left"><code>deactivated</code></td><td align="left">keep-alive 缓存的组件失活时调用 <a href="https://v2.cn.vuejs.org/v2/api/#deactivated">#</a></td></tr><tr><td align="left"><code>beforeDestroy</code></td><td align="left">实例销毁之前调用 <a href="https://v2.cn.vuejs.org/v2/api/#beforeDestroy">#</a></td></tr><tr><td align="left"><code>destroyed</code></td><td align="left">实例销毁后调用 <a href="https://v2.cn.vuejs.org/v2/api/#destroyed">#</a></td></tr><tr><td align="left"><code>errorCaptured</code> <em>(2.5.0)</em></td><td align="left">来自后代组件的错误时被调用 <a href="https://v2.cn.vuejs.org/v2/api/#errorCaptured">#</a></td></tr></tbody></table>
|
||
</div></div></div><div class="wrap"><div class="wrap-header h3wrap"><h3 id="资源"><a aria-hidden="true" tabindex="-1" href="#资源"><span class="icon icon-link"></span></a>资源</h3><div class="wrap-body">
|
||
|
||
|
||
|
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|
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|
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|
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|
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|
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|
||
|
||
|
||
<table><thead><tr><th align="left">:-</th><th align="left">:-</th></tr></thead><tbody><tr><td align="left"><code>directives</code></td><td align="left">包含 Vue 实例可用指令的哈希表 <a href="https://v2.cn.vuejs.org/v2/api/#directives">#</a></td></tr><tr><td align="left"><code>filters</code></td><td align="left">包含 Vue 实例可用过滤器的哈希表 <a href="https://v2.cn.vuejs.org/v2/api/#filters">#</a></td></tr><tr><td align="left"><code>components</code></td><td align="left">包含 Vue 实例可用组件的哈希表 <a href="https://v2.cn.vuejs.org/v2/api/#components">#</a></td></tr></tbody></table>
|
||
</div></div></div><div class="wrap"><div class="wrap-header h3wrap"><h3 id="组合"><a aria-hidden="true" tabindex="-1" href="#组合"><span class="icon icon-link"></span></a>组合</h3><div class="wrap-body">
|
||
|
||
|
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|
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|
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|
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|
||
<table><thead><tr><th align="left">:-</th><th align="left">:-</th></tr></thead><tbody><tr><td align="left"><code>parent</code></td><td align="left">指定已创建的实例之父实例 <a href="https://v2.cn.vuejs.org/v2/api/#parent">#</a></td></tr><tr><td align="left"><code>mixins</code></td><td align="left">接收一个混入对象的数组 <a href="https://v2.cn.vuejs.org/v2/api/#mixins">#</a></td></tr><tr><td align="left"><code>extends</code></td><td align="left">声明扩展另一个组件 <a href="https://v2.cn.vuejs.org/v2/api/#extends">#</a></td></tr><tr><td align="left"><code>provide/inject</code> <em>(2.2.0)</em></td><td align="left">祖组件向所有子孙后代注入依赖 <a href="https://v2.cn.vuejs.org/v2/api/#provide-inject">#</a></td></tr></tbody></table>
|
||
</div></div></div><div class="wrap"><div class="wrap-header h3wrap"><h3 id="其它"><a aria-hidden="true" tabindex="-1" href="#其它"><span class="icon icon-link"></span></a>其它</h3><div class="wrap-body">
|
||
|
||
|
||
|
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|
||
<table><thead><tr><th align="left">:-</th><th align="left">:-</th></tr></thead><tbody><tr><td align="left"><code>name</code></td><td align="left">允许组件模板递归地调用自身 <a href="https://v2.cn.vuejs.org/v2/api/#name">#</a></td></tr><tr><td align="left"><code>delimiters</code></td><td align="left">改变纯文本插入分隔符 <a href="https://v2.cn.vuejs.org/v2/api/#delimiters">#</a></td></tr><tr><td align="left"><code>functional</code></td><td align="left">使组件无状态和无实例 <a href="https://v2.cn.vuejs.org/v2/api/#functional">#</a></td></tr><tr><td align="left"><code>model</code> <em>(2.2.0)</em></td><td align="left">使用 v-model 时定制 prop 和 event <a href="https://v2.cn.vuejs.org/v2/api/#model">#</a></td></tr><tr><td align="left"><code>inheritAttrs</code> <em>(2.4.0)</em></td><td align="left"><a href="https://v2.cn.vuejs.org/v2/api/#inheritAttrs">#</a></td></tr><tr><td align="left"><code>comments</code> <em>(2.4.0)</em></td><td align="left">是否保留模板中的<code>HTML</code>注释 <a href="https://v2.cn.vuejs.org/v2/api/#comments">#</a></td></tr></tbody></table>
|
||
</div></div></div><div class="wrap"><div class="wrap-header h3wrap"><h3 id="实例方法--数据"><a aria-hidden="true" tabindex="-1" href="#实例方法--数据"><span class="icon icon-link"></span></a>实例方法 / 数据</h3><div class="wrap-body">
|
||
|
||
|
||
|
||
|
||
|
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|
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|
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|
||
|
||
|
||
|
||
<table><thead><tr><th align="left">:-</th><th align="left">:-</th></tr></thead><tbody><tr><td align="left"><code>vm.$watch</code></td><td align="left">观察 Vue 实例上的一个表达式<br>或者一个函数计算结果的变化 <a href="https://v2.cn.vuejs.org/v2/api/#vm-watch">#</a></td></tr><tr><td align="left"><code>vm.$set</code></td><td align="left">全局 <code>Vue.set</code> 的别名 <a href="https://v2.cn.vuejs.org/v2/api/#vm-set">#</a></td></tr><tr><td align="left"><code>vm.$delete</code></td><td align="left">全局 <code>Vue.delete</code> 的别名 <a href="https://v2.cn.vuejs.org/v2/api/#vm-delete">#</a></td></tr></tbody></table>
|
||
</div></div></div><div class="wrap row-span-3"><div class="wrap-header h3wrap"><h3 id="实例-property"><a aria-hidden="true" tabindex="-1" href="#实例-property"><span class="icon icon-link"></span></a>实例 property</h3><div class="wrap-body">
|
||
<!--rehype:wrap-class=row-span-3-->
|
||
|
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|
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|
||
<table><thead><tr><th align="left">:-</th><th align="left">:-</th></tr></thead><tbody><tr><td align="left"><code>vm.$data</code></td><td align="left"><a href="https://v2.cn.vuejs.org/v2/api/#vm-data">#</a></td></tr><tr><td align="left"><code>vm.$props</code> <em>(2.2.0)</em></td><td align="left"><a href="https://v2.cn.vuejs.org/v2/api/#vm-props">#</a></td></tr><tr><td align="left"><code>vm.$el</code></td><td align="left"><a href="https://v2.cn.vuejs.org/v2/api/#vm-el">#</a></td></tr><tr><td align="left"><code>vm.$options</code></td><td align="left"><a href="https://v2.cn.vuejs.org/v2/api/#vm-options">#</a></td></tr><tr><td align="left"><code>vm.$parent</code></td><td align="left"><a href="https://v2.cn.vuejs.org/v2/api/#vm-parent">#</a></td></tr><tr><td align="left"><code>vm.$root</code></td><td align="left"><a href="https://v2.cn.vuejs.org/v2/api/#vm-root">#</a></td></tr><tr><td align="left"><code>vm.$children</code></td><td align="left"><a href="https://v2.cn.vuejs.org/v2/api/#vm-children">#</a></td></tr><tr><td align="left"><code>vm.$slots</code></td><td align="left"><a href="https://v2.cn.vuejs.org/v2/api/#vm-slots">#</a></td></tr><tr><td align="left"><code>vm.$scopedSlots</code> <em>(2.1.0)</em></td><td align="left"><a href="https://v2.cn.vuejs.org/v2/api/#vm-scopedSlots">#</a></td></tr><tr><td align="left"><code>vm.$refs</code></td><td align="left"><a href="https://v2.cn.vuejs.org/v2/api/#vm-refs">#</a></td></tr><tr><td align="left"><code>vm.$isServer</code></td><td align="left"><a href="https://v2.cn.vuejs.org/v2/api/#vm-isServer">#</a></td></tr><tr><td align="left"><code>vm.$attrs</code> <em>(2.4.0)</em></td><td align="left"><a href="https://v2.cn.vuejs.org/v2/api/#vm-attrs">#</a></td></tr><tr><td align="left"><code>vm.$listeners</code> <em>(2.4.0)</em></td><td align="left"><a href="https://v2.cn.vuejs.org/v2/api/#vm-listeners">#</a></td></tr></tbody></table>
|
||
</div></div></div><div class="wrap"><div class="wrap-header h3wrap"><h3 id="实例方法--事件"><a aria-hidden="true" tabindex="-1" href="#实例方法--事件"><span class="icon icon-link"></span></a>实例方法 / 事件</h3><div class="wrap-body">
|
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|
||
<table><thead><tr><th align="left">:-</th><th align="left">:-</th></tr></thead><tbody><tr><td align="left"><code>vm.$on</code></td><td align="left">监听当前实例上的自定义事件 <a href="https://v2.cn.vuejs.org/v2/api/#vm-on">#</a></td></tr><tr><td align="left"><code>vm.$once</code></td><td align="left">监听一个自定义事件，只触发一次 <a href="https://v2.cn.vuejs.org/v2/api/#vm-once">#</a></td></tr><tr><td align="left"><code>vm.$off</code></td><td align="left">移除自定义事件监听器 <a href="https://v2.cn.vuejs.org/v2/api/#vm-off">#</a></td></tr><tr><td align="left"><code>vm.$emit</code></td><td align="left">触发当前实例上的事 <a href="https://v2.cn.vuejs.org/v2/api/#vm-emit">#</a></td></tr></tbody></table>
|
||
</div></div></div><div class="wrap"><div class="wrap-header h3wrap"><h3 id="实例方法--生命周期"><a aria-hidden="true" tabindex="-1" href="#实例方法--生命周期"><span class="icon icon-link"></span></a>实例方法 / 生命周期</h3><div class="wrap-body">
|
||
|
||
|
||
|
||
|
||
|
||
|
||
|
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|
||
|
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|
||
<table><thead><tr><th align="left">:-</th><th align="left">:-</th></tr></thead><tbody><tr><td align="left"><code>vm.$mount</code></td><td align="left">手动地挂载一个未挂载的实例 <a href="https://v2.cn.vuejs.org/v2/api/#vm-mount">#</a></td></tr><tr><td align="left"><code>vm.$forceUpdate</code></td><td align="left">迫使 Vue 实例重新渲染 <a href="https://v2.cn.vuejs.org/v2/api/#vm-forceUpdate">#</a></td></tr><tr><td align="left"><code>vm.$nextTick</code></td><td align="left">回调延迟执行 <a href="https://v2.cn.vuejs.org/v2/api/#vm-nextTick">#</a></td></tr><tr><td align="left"><code>vm.$destroy</code></td><td align="left">完全销毁一个实例 <a href="https://v2.cn.vuejs.org/v2/api/#vm-destroy">#</a></td></tr></tbody></table>
|
||
</div></div></div><div class="wrap row-span-2"><div class="wrap-header h3wrap"><h3 id="指令-1"><a aria-hidden="true" tabindex="-1" href="#指令-1"><span class="icon icon-link"></span></a>指令</h3><div class="wrap-body">
|
||
<!--rehype:wrap-class=row-span-2-->
|
||
|
||
|
||
|
||
|
||
|
||
|
||
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|
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|
||
|
||
|
||
|
||
<table><thead><tr><th align="left">:-</th><th align="left">:-</th></tr></thead><tbody><tr><td align="left"><code>v-text</code></td><td align="left"><a href="https://v2.cn.vuejs.org/v2/api/#v-text">#</a></td></tr><tr><td align="left"><code>v-html</code></td><td align="left"><a href="https://v2.cn.vuejs.org/v2/api/#v-html">#</a></td></tr><tr><td align="left"><code>v-show</code></td><td align="left"><a href="https://v2.cn.vuejs.org/v2/api/#v-show">#</a></td></tr><tr><td align="left"><code>v-if</code></td><td align="left"><a href="https://v2.cn.vuejs.org/v2/api/#v-if">#</a></td></tr><tr><td align="left"><code>v-else</code></td><td align="left"><a href="https://v2.cn.vuejs.org/v2/api/#v-else">#</a></td></tr><tr><td align="left"><code>v-else-if</code> <em>(2.1.0)</em></td><td align="left"><a href="https://v2.cn.vuejs.org/v2/api/#v-else-if">#</a></td></tr><tr><td align="left"><code>v-for</code></td><td align="left"><a href="https://v2.cn.vuejs.org/v2/api/#v-for">#</a></td></tr><tr><td align="left"><code>v-on</code></td><td align="left"><a href="https://v2.cn.vuejs.org/v2/api/#v-on">#</a></td></tr><tr><td align="left"><code>v-bind</code></td><td align="left"><a href="https://v2.cn.vuejs.org/v2/api/#v-bind">#</a></td></tr><tr><td align="left"><code>v-model</code></td><td align="left"><a href="https://v2.cn.vuejs.org/v2/api/#v-model">#</a></td></tr><tr><td align="left"><code>v-slot</code></td><td align="left"><a href="https://v2.cn.vuejs.org/v2/api/#v-slot">#</a></td></tr><tr><td align="left"><code>v-pre</code></td><td align="left"><a href="https://v2.cn.vuejs.org/v2/api/#v-pre">#</a></td></tr><tr><td align="left"><code>v-cloak</code></td><td align="left"><a href="https://v2.cn.vuejs.org/v2/api/#v-cloak">#</a></td></tr><tr><td align="left"><code>v-once</code></td><td align="left"><a href="https://v2.cn.vuejs.org/v2/api/#v-once">#</a></td></tr></tbody></table>
|
||
</div></div></div><div class="wrap"><div class="wrap-header h3wrap"><h3 id="特殊-attribute"><a aria-hidden="true" tabindex="-1" href="#特殊-attribute"><span class="icon icon-link"></span></a>特殊 attribute</h3><div class="wrap-body">
|
||
|
||
|
||
|
||
|
||
|
||
|
||
|
||
|
||
|
||
|
||
|
||
|
||
|
||
|
||
|
||
|
||
|
||
|
||
|
||
|
||
|
||
|
||
|
||
|
||
|
||
|
||
|
||
|
||
|
||
|
||
|
||
|
||
|
||
<table><thead><tr><th align="left">:-</th><th align="left">:-</th></tr></thead><tbody><tr><td align="left"><code>key</code></td><td align="left"><a href="https://v2.cn.vuejs.org/v2/api/#key">#</a></td></tr><tr><td align="left"><code>ref</code></td><td align="left"><a href="https://v2.cn.vuejs.org/v2/api/#ref">#</a></td></tr><tr><td align="left"><code>is</code></td><td align="left"><a href="https://v2.cn.vuejs.org/v2/api/#is">#</a></td></tr><tr><td align="left"><del><code>slot</code></del></td><td align="left">推荐 2.6.0 新增的 <code>v-slot</code> <a href="https://v2.cn.vuejs.org/v2/api/#slot-%E5%BA%9F%E5%BC%83">#</a></td></tr><tr><td align="left"><del><code>slot-scope</code></del></td><td align="left">推荐 2.6.0 新增的 <code>v-slot</code> <a href="https://v2.cn.vuejs.org/v2/api/#slot-scope-%E5%BA%9F%E5%BC%83">#</a></td></tr><tr><td align="left"><del><code>scope</code></del></td><td align="left"><code>2.5.0</code> 新增的 <code>slot-scope</code> 取代 <a href="https://v2.cn.vuejs.org/v2/api/#scope-%E7%A7%BB%E9%99%A4">#</a></td></tr></tbody></table>
|
||
</div></div></div><div class="wrap"><div class="wrap-header h3wrap"><h3 id="内置的组件"><a aria-hidden="true" tabindex="-1" href="#内置的组件"><span class="icon icon-link"></span></a>内置的组件</h3><div class="wrap-body">
|
||
|
||
|
||
|
||
|
||
|
||
|
||
|
||
|
||
|
||
|
||
|
||
|
||
|
||
|
||
|
||
|
||
|
||
|
||
|
||
|
||
|
||
|
||
|
||
|
||
|
||
|
||
|
||
|
||
|
||
<table><thead><tr><th align="left">:-</th><th align="left">:-</th></tr></thead><tbody><tr><td align="left"><code>component</code></td><td align="left"><a href="https://v2.cn.vuejs.org/v2/api/#component">#</a></td></tr><tr><td align="left"><code>transition</code></td><td align="left"><a href="https://v2.cn.vuejs.org/v2/api/#transition">#</a></td></tr><tr><td align="left"><code>transition-group</code></td><td align="left"><a href="https://v2.cn.vuejs.org/v2/api/#transition-group">#</a></td></tr><tr><td align="left"><code>keep-alive</code></td><td align="left"><a href="https://v2.cn.vuejs.org/v2/api/#keep-alive">#</a></td></tr><tr><td align="left"><code>slot</code></td><td align="left"><a href="https://v2.cn.vuejs.org/v2/api/#slot">#</a></td></tr></tbody></table>
|
||
</div></div></div><div class="wrap row-span-2"><div class="wrap-header h3wrap"><h3 id="v-on-事件修饰符"><a aria-hidden="true" tabindex="-1" href="#v-on-事件修饰符"><span class="icon icon-link"></span></a>v-on (事件)修饰符</h3><div class="wrap-body">
|
||
<!--rehype:wrap-class=row-span-2-->
|
||
|
||
|
||
|
||
|
||
|
||
|
||
|
||
|
||
|
||
|
||
|
||
|
||
|
||
|
||
|
||
|
||
|
||
|
||
|
||
|
||
|
||
|
||
|
||
|
||
|
||
|
||
|
||
|
||
|
||
|
||
|
||
|
||
|
||
|
||
|
||
|
||
|
||
|
||
|
||
|
||
|
||
<table class="style-list"><thead><tr><th align="left">:-</th><th align="left">:-</th></tr></thead><tbody><tr><td align="left"><code>v-on:click.stop</code> <a href="https://v2.cn.vuejs.org/v2/api/#v-on">#</a></td><td align="left">调用 event.stopPropagation()。</td></tr><tr><td align="left"><code>v-on:click.prevent</code> <a href="https://v2.cn.vuejs.org/v2/api/#v-on">#</a></td><td align="left">调用 event.preventDefault()。</td></tr><tr><td align="left"><code>v-on:click.capture</code> <a href="https://v2.cn.vuejs.org/v2/api/#v-on">#</a></td><td align="left">添加事件侦听器时使用 capture 模式。</td></tr><tr><td align="left"><code>v-on:click.self</code> <a href="https://v2.cn.vuejs.org/v2/api/#v-on">#</a></td><td align="left">只当事件是从侦听器绑定的元素本身触发时才触发回调。</td></tr><tr><td align="left"><code>v-on:click.{keyCode|keyAlias}</code> <a href="https://v2.cn.vuejs.org/v2/api/#v-on">#</a></td><td align="left">只当事件是从特定键触发时才触发回调。</td></tr><tr><td align="left"><code>v-on:click.native</code> <a href="https://v2.cn.vuejs.org/v2/api/#v-on">#</a></td><td align="left">监听组件根元素的原生事件。</td></tr><tr><td align="left"><code>v-on:click.once</code> <a href="https://v2.cn.vuejs.org/v2/api/#v-on">#</a></td><td align="left">只触发一次回调。</td></tr><tr><td align="left"><code>v-on:click.passive</code> <em>(2.3.0)</em> <a href="https://v2.cn.vuejs.org/v2/api/#v-on">#</a></td><td align="left">以 { passive: true } 模式添加侦听器</td></tr></tbody></table>
|
||
<!--rehype:className=style-list-->
|
||
</div></div></div><div class="wrap"><div class="wrap-header h3wrap"><h3 id="v-on-鼠标修饰符"><a aria-hidden="true" tabindex="-1" href="#v-on-鼠标修饰符"><span class="icon icon-link"></span></a>v-on (鼠标)修饰符</h3><div class="wrap-body">
|
||
|
||
|
||
|
||
|
||
|
||
|
||
|
||
|
||
|
||
|
||
|
||
|
||
|
||
|
||
|
||
|
||
|
||
|
||
|
||
|
||
|
||
<table><thead><tr><th align="left">:-</th><th align="left">:-</th></tr></thead><tbody><tr><td align="left"><code>v-on:click.left</code> <a href="https://v2.cn.vuejs.org/v2/api/#v-on">#</a></td><td align="left">只当点击鼠标左键时触发</td></tr><tr><td align="left"><code>v-on:click.right</code> <a href="https://v2.cn.vuejs.org/v2/api/#v-on">#</a></td><td align="left">只当点击鼠标右键时触发</td></tr><tr><td align="left"><code>v-on:click.middle</code> <a href="https://v2.cn.vuejs.org/v2/api/#v-on">#</a></td><td align="left">只当点击鼠标中键时触发</td></tr></tbody></table>
|
||
<p>在 <em>(2.2.0)</em> 中新增</p>
|
||
</div></div></div><div class="wrap"><div class="wrap-header h3wrap"><h3 id="系统修饰键"><a aria-hidden="true" tabindex="-1" href="#系统修饰键"><span class="icon icon-link"></span></a>系统修饰键</h3><div class="wrap-body">
|
||
|
||
|
||
|
||
|
||
|
||
|
||
|
||
|
||
|
||
|
||
|
||
|
||
|
||
|
||
|
||
|
||
|
||
|
||
|
||
|
||
|
||
|
||
|
||
|
||
|
||
<table><thead><tr><th align="left">:-</th><th align="left">:-</th></tr></thead><tbody><tr><td align="left"><code>v-on:keyup.ctrl</code> <em>(2.1.0)</em></td><td align="left"><a href="https://v2.cn.vuejs.org/v2/guide/events.html#%E7%B3%BB%E7%BB%9F%E4%BF%AE%E9%A5%B0%E9%94%AE">#</a></td></tr><tr><td align="left"><code>v-on:keyup.alt</code> <em>(2.1.0)</em></td><td align="left"><a href="https://v2.cn.vuejs.org/v2/guide/events.html#%E7%B3%BB%E7%BB%9F%E4%BF%AE%E9%A5%B0%E9%94%AE">#</a></td></tr><tr><td align="left"><code>v-on:keyup.shift</code> <em>(2.1.0)</em></td><td align="left"><a href="https://v2.cn.vuejs.org/v2/guide/events.html#%E7%B3%BB%E7%BB%9F%E4%BF%AE%E9%A5%B0%E9%94%AE">#</a></td></tr><tr><td align="left"><code>v-on:keyup.meta</code> <em>(2.1.0)</em></td><td align="left"><a href="https://v2.cn.vuejs.org/v2/guide/events.html#%E7%B3%BB%E7%BB%9F%E4%BF%AE%E9%A5%B0%E9%94%AE">#</a></td></tr></tbody></table>
|
||
</div></div></div><div class="wrap"><div class="wrap-header h3wrap"><h3 id="keyboard-按键修饰符"><a aria-hidden="true" tabindex="-1" href="#keyboard-按键修饰符"><span class="icon icon-link"></span></a>Keyboard 按键修饰符</h3><div class="wrap-body">
|
||
|
||
|
||
|
||
|
||
|
||
|
||
|
||
|
||
|
||
|
||
|
||
|
||
|
||
|
||
|
||
|
||
|
||
|
||
|
||
|
||
|
||
|
||
|
||
|
||
|
||
|
||
|
||
|
||
|
||
|
||
|
||
|
||
|
||
|
||
|
||
|
||
|
||
|
||
|
||
|
||
|
||
|
||
|
||
|
||
|
||
<table><thead><tr><th align="left">:-</th><th align="left">:-</th></tr></thead><tbody><tr><td align="left"><code>v-on:keyup.enter</code></td><td align="left"><a href="https://v2.cn.vuejs.org/v2/guide/events.html#%E6%8C%89%E9%94%AE%E4%BF%AE%E9%A5%B0%E7%AC%A6">#</a></td></tr><tr><td align="left"><code>v-on:keyup.tab</code></td><td align="left"><a href="https://v2.cn.vuejs.org/v2/guide/events.html#%E6%8C%89%E9%94%AE%E4%BF%AE%E9%A5%B0%E7%AC%A6">#</a></td></tr><tr><td align="left"><code>v-on:keyup.delete </code></td><td align="left">捕获“删除”和“退格”键 <a href="https://v2.cn.vuejs.org/v2/guide/events.html#%E6%8C%89%E9%94%AE%E4%BF%AE%E9%A5%B0%E7%AC%A6">#</a></td></tr><tr><td align="left"><code>v-on:keyup.esc</code></td><td align="left"><a href="https://v2.cn.vuejs.org/v2/guide/events.html#%E6%8C%89%E9%94%AE%E4%BF%AE%E9%A5%B0%E7%AC%A6">#</a></td></tr><tr><td align="left"><code>v-on:keyup.space</code></td><td align="left"><a href="https://v2.cn.vuejs.org/v2/guide/events.html#%E6%8C%89%E9%94%AE%E4%BF%AE%E9%A5%B0%E7%AC%A6">#</a></td></tr><tr><td align="left"><code>v-on:keyup.up</code></td><td align="left"><a href="https://v2.cn.vuejs.org/v2/guide/events.html#%E6%8C%89%E9%94%AE%E4%BF%AE%E9%A5%B0%E7%AC%A6">#</a></td></tr><tr><td align="left"><code>v-on:keyup.down</code></td><td align="left"><a href="https://v2.cn.vuejs.org/v2/guide/events.html#%E6%8C%89%E9%94%AE%E4%BF%AE%E9%A5%B0%E7%AC%A6">#</a></td></tr><tr><td align="left"><code>v-on:keyup.left</code></td><td align="left"><a href="https://v2.cn.vuejs.org/v2/guide/events.html#%E6%8C%89%E9%94%AE%E4%BF%AE%E9%A5%B0%E7%AC%A6">#</a></td></tr><tr><td align="left"><code>v-on:keyup.right</code></td><td align="left"><a href="https://v2.cn.vuejs.org/v2/guide/events.html#%E6%8C%89%E9%94%AE%E4%BF%AE%E9%A5%B0%E7%AC%A6">#</a></td></tr></tbody></table>
|
||
</div></div></div><div class="wrap"><div class="wrap-header h3wrap"><h3 id="v-bind-修饰符"><a aria-hidden="true" tabindex="-1" href="#v-bind-修饰符"><span class="icon icon-link"></span></a>v-bind 修饰符</h3><div class="wrap-body">
|
||
|
||
|
||
|
||
|
||
|
||
|
||
|
||
|
||
|
||
|
||
|
||
|
||
|
||
|
||
|
||
|
||
|
||
|
||
|
||
|
||
|
||
<table class="style-list"><thead><tr><th align="left">:-</th><th align="left">:-</th></tr></thead><tbody><tr><td align="left"><code>v-bind.prop</code> <a href="https://v2.cn.vuejs.org/v2/api/#v-bind">#</a></td><td align="left">作为一个 DOM property 绑定而不是作为 attribute 绑定。(<a href="https://stackoverflow.com/questions/6003819/properties-and-attributes-in-html#answer-6004028">差别在哪里？</a>)</td></tr><tr><td align="left"><code>v-bind.camel</code> <em>(2.1.0+)</em> <a href="https://v2.cn.vuejs.org/v2/api/#v-bind">#</a></td><td align="left">将 kebab-case attribute 名转换为 camelCase。</td></tr><tr><td align="left"><code>v-bind.sync</code> <em>(2.3.0+)</em> <a href="https://v2.cn.vuejs.org/v2/api/#v-bind">#</a></td><td align="left">语法糖，会扩展成一个更新父组件绑定值的 v-on 侦听器。</td></tr></tbody></table>
|
||
<!--rehype:className=style-list-->
|
||
</div></div></div></div></div><div class="wrap"><div class="wrap-header h2wrap"><h2 id="另见"><a aria-hidden="true" tabindex="-1" href="#另见"><span class="icon icon-link"></span></a>另见</h2><div class="wrap-body">
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<ul>
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<li><a href="https://www.vuemastery.com/pdf/Vue-Essentials-Cheat-Sheet.pdf">Vue Essentials Cheat-Sheet.pdf</a> <em>(vuemastery.com)</em></li>
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<li><a href="https://v2.cn.vuejs.org/">Vue 2 官方文档</a> <em>(vuejs.org)</em></li>
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<li><a href="https://marozed.com/vue-cheatsheet#Instance-Methods-Events">Vue 2 实例方法事件</a> <em>(marozed.com)</em></li>
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</ul>
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