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<!DOCTYPE html> <html> <head> <meta charset="utf-8"> <title>本教程(w3big.com)</title> <script src="http://cdn.static.w3big.com/libs/jquery/1.10.2/jquery.min.js"> </script> <script> $(document).ready(function(){ $("button").click(function(){ $.ajax({url:"demo_test.txt",success:function(result){ $("#div1").html(result); }}); }); }); </script> </head> <body> <div id="div1"><h2>使用 jQuery AJAX 修改文本内容</h2></div> <button>获取其他内容</button> </body> </html>