jQuery hasData() Method
jQuery hasData() Method
The jQuery hasData() method determines whether an element has any jQuery data associated with it.
Example
HTML Editor
<!DOCTYPE html>
<html lang="en-US">
<head>
<script src="https://ajax.googleapis.com/ajax/libs/jquery/3.5.1/jquery.min.js"></script>
</head>
<body>
<h1>jQuery hasData() Method</h1>
<div id="data"></div>
<p>First add data() and then check hasData()</p>
<button id="myAdd">add data()</button>
<button id="myHas">hasData()</button>
<script>
$(document).ready(function(){
var $data = $('#data');
$("#myAdd").click(function(){
$.data($data, 'test', 1);
alert("Data Added, check hasData()");
});
$("#myHas").click(function(){
alert($.hasData($data));
});
});
</script>
</body>
</html>
Syntax
$.hasData(elem);
Parameter Values
| Value | Type | Explanation |
|---|---|---|
| elem | Required | Specifies a DOM element to be checked for data. |
Return Values
| Value | Explanation |
|---|---|
| true | If there is a data object associated with an element. |
| false | If there is no data object associated with an element. |
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