转:http://www.runoob.com/jquery/jquery-ajax-load.html
<html>
<head>
<meta charset="utf-8">
<script src="http://cdn.static.runoob.com/libs/jquery/1.10.2/jquery.min.js">
</script>
<script>
$(document).ready(function(){
$("button").click(function(){
$("#div1").load("/try/ajax/demo_test.txt",function(responseTxt,statusTxt,xhr){
if(statusTxt=="success"){
alert("外部内容加载成功!");
}else if(statusTxt=="error"){
alert("Error: "+xhr.status+": "+xhr.statusText);
}
});
});
});
</script>
</head>
<body>
<div id="div1"><h2>使用 jQuery AJAX 修改该文本</h2></div>
<button>获取外部内容</button>
</body>
</html>
