<!DOCTYPE html>
<html>
<head>
<meta charset=" utf-8">
<meta name="author" content="https://www.jb51.net/" />
<title>脚本之家</title>
<script type="text/javascript" src="mytest/jQuery/jquery-1.8.3.js"></script>
<script type="text/javascript">
$(document).ready(function(){
$("#add").click(function(){
$("div").data("mydata","脚本之家欢迎您");
});
$("#show").click(function(){
$("div").text($("div").data("mydata"));
});
$("#delete").click(function(){
$("div").removeData("mydata");
alert($("div").data("mydata"));
})
});
</script>
</head>
<body>
<div></div>
<button id="add">向元素添加数据</button>
<button id="show">显示添加的数据</button>
<button id="delete">删除元素中的数据</button>
</body>
</html>