在线运行代码 - 菜鸟教程

<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<title>菜鸟教程(cainiaoplay.com)</title>
<script src="https://cdn.staticfile.org/jquery/1.10.2/jquery.min.js">
</script>
<script>
$(document).ready(function(){
	testObj=new Object();
	testObj.greetingMorn="Good Morning!";
	testObj.greetingEve="Good Evening!";
	$("#btn1").click(function(){
		$("div").data(testObj);
	});
	$("#btn2").click(function(){
		alert($("div").data("greetingEve"));
	});
});
</script>
</head>
<body>

<button id="btn1">将数据附加到div元素</button><br>
<button id="btn2">获取数据附加到div元素</button>
<div></div>

</body>
</html>
源代码

动行结果
