From 6b570f2035ecc31698a3caeb6a41cd225997e4a2 Mon Sep 17 00:00:00 2001
From: Perzch <67987641+Perzch@users.noreply.github.com>
Date: Sat, 14 Jan 2023 12:22:40 +0800
Subject: [PATCH] doc: update javascript.md (#271)
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

add JavaScript Functions 函数
line: 472-480
---
 docs/javascript.md | 9 +++++++++
 1 file changed, 9 insertions(+)

diff --git a/docs/javascript.md b/docs/javascript.md
index 9ebd0e85..45355ed0 100644
--- a/docs/javascript.md
+++ b/docs/javascript.md
@@ -469,6 +469,15 @@ function sum(num1, num2) {
 sum(2, 4); // 6
 ```
 
+### 立即执行函数
+
+```javascript
+//命名函数并立即执行一次
+(function sum(num1, num2) {
+  return num1 + num2;
+})(2,4)//6
+```
+
 ### 函数表达式
 
 ```javascript