<html>
<head>
<script type="text/javascript" src="/jquery/jquery.js"></script>
<script type="text/javascript">
$(document).ready(function(){
$("#b01").click(function(){
htmlobj=$.ajax({url:"/jquery/test1.txt",async:false});
var temp=htmlobj.responseText; alert(temp);
$("#myDiv").html(htmlobj.responseText); });
}); </script>
</head>
<body>
<div id="myDiv"><h2>通过 AJAX 改变文本</h2></div> <button id="b01" type="button">改变内容</button>
</body>
</html>
原文：http://www.cnblogs.com/qiyongliang/p/3822931.html