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<!DOCTYPE html> <meta charset="utf-8"> <link href="/static/next/css/tryit.css?v=2017082407" rel="stylesheet"/> <script src="https://cdn.staticfile.org/jquery/2.2.4/jquery.min.js"></script> <script> $(document).ready(function(){ $(document).ajaxStart(function(){ $("#wait").css("display","block"); }); $(document).ajaxComplete(function(){ $("#wait").css("display","none"); }); $("button").click(function(){ $("#txt").load("/static/media/jquery/demo_ajax_load.txt"); }); }); </script> <div id="txt"><h2>使用 AJAX 修改文本</h2></div> <button>修改内容</button> <div id="wait" style="display:none;width:69px;height:89px;border:1px solid black;position:absolute;top:50%;left:50%;padding:2px;"><img src='demo_wait.gif' width="64" height="64" /> <br>Loading..</div> <footer>简单教程,简单编程<br/>Copyright © 简单教程 www.twle.cn</footer>
运行结果: