<html>
<head>
<meta http-equiv="Content-Type" content="text/html;charset=utf-8" />
<script type="text/javascript" src="jquery-1.8.2.min.js"></script>
<script type="text/javascript">
$(document).ready(function(){
$("button").click(function(){
var htmlObj = $.ajax({url:"ab.txt",async:false});//$.ajax() 返回其创建的 XMLHttpRequest 对象
$("#myDiv").html(htmlObj.responseText);
});
});
</script>
</head>
<body>
<div id="myDiv"><h2>hello world</h2></div>
<button>改变内容jquery-ajax</button>
</body>
</html>