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.


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<!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>



Parameter Values

elemRequiredSpecifies a DOM element to be checked for data.

Return Values

trueIf there is a data object associated with an element.
falseIf there is no data object associated with an element.


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