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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_ajax_script.js",dataType:"script"}); }); }); </script> </head> <body> <button>使用 Ajax 获取数据并执行 JavaScript</button> </body> </html>