jQuery remove non-existent class

JavaScript performance comparison

Test case created by Josh

Preparation code

<script src="https://ajax.googleapis.com/ajax/libs/jquery/1/jquery.min.js"></script>
<div id="#something"></div>
var $something = $("#something");

Preparation code output

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Testing in unknown unknown
Test Ops/sec
Without data check
With data check
if ($.data($something, "hasClass")) {

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