From 382617de81d6a9eab4c1d914d4ccc01c35c9ebaa Mon Sep 17 00:00:00 2001
From: many2many <6168830@qq.com>
Date: Thu, 10 Oct 2024 09:36:23 +0800
Subject: [PATCH] =?UTF-8?q?add=20ajax=20=E7=AE=80=E4=BB=8B=E9=93=BE?=
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 docs/chapter03.md | 3 +++
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diff --git a/docs/chapter03.md b/docs/chapter03.md
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@@ -208,6 +208,9 @@ async function example() {
 
 
 #### 3.3.2 XMLHttpRequest对象的使用 (了解)
+
+[AJAX 简介](https://www.runoob.com/ajax/ajax-intro.html)
+
 - **基本用法：** 创建对象、设置请求类型、发送请求、处理响应。
 - **事件监听：** 监听 `onreadystatechange` 事件来获取服务器响应的状态。
 - **请求方法：** `open` 方法设置请求类型和URL，`send` 方法发送请求。