data
English [ˈdeɪtə] US [ˈdetə, ˈdætə, ˈdɑtə]
n. Information, material; plural of datum; [computer] data, information ;Value extracted from scientific experiments
jquery data() method syntax
Function: data() method appends data to the selected element, or obtains data from the selected element.
Return data from the element: Return additional data from the selected element.
Syntax: $(selector).data(name)
Parameters: name Optional. Specifies the name of the data to be retrieved. If no name is specified, this method returns all stored data from the element as an object. Append data from element: Append data to the selected element.
Syntax: $(selector).data(name,value)
##Parameters: name Required. Specifies the name of the data to be set. value Required. Specifies the value of the data to be set.
Use objects to append data to elements: Use objects with name/value pairs to add data to selected elements.
Syntax: $(selector).data(object)
Parameters: object required. Specifies an object containing name/value pairs.
jquery data() method example
<html>
<head>
<script type="text/javascript" src="http://apps.bdimg.com/libs/jquery/2.1.1/jquery.min.js"></script>
<script type="text/javascript">
$(document).ready(function(){
$("#btn1").click(function(){
$("div").data("greeting", "Hello World");
});
$("#btn2").click(function(){
alert($("div").data("greeting"));
});
});
</script>
</head>
<body>
<button id="btn1">把数据添加到 div 元素</button><br />
<button id="btn2">获取已添加到 div 元素的数据</button>
<div></div>
</body>
</html>Click the "Run instance" button to view the online instance