$(selector).data(name)
$(selector).data(name, value)
<html>
<head>
<title> jQuery data() method </title>
<script src="/ajax/libs/jquery/3.5.1/jquery.min.js"> </script>
<style>
div {
padding: 10px;
background-color: lightblue;
font-size: 25px;
width: 350px;
}
</style>
</head>
<body>
<h4> This is an example of using the jQuery data() method. </h4>
<div> This is a div element. </div>
<p> Click the following buttons to see the effect. </p>
<button id = "b1"> 附加数据 </button>
<button id = "b2"> 获取数据 </button>
<script>
$("document").ready(function(){
$("#b1").click(function(){
$("div").data("name", "Welcome to the bianchenghao6.com");
alert("Data attached");
})
$("#b2").click(function(){
alert($("div").data("name"));
$("div").text($("div").data("name"));
})
});
</script>
</body>
</html>
Click the following buttons to see the effect.