jQuery hasData() Method

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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.

Browser Support

Devicedesktopmobile
Browsergoogle chromesafarifirefoxinternet Exploreredgeoperagoogle chromesafarifirefoxedgeoperaandroid webviewsamsung internet
hasData()YesYesYesYesYesYesYesYesYesYesYesYesYes

Return Values

ValueExplanation
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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