Data attribute vs.jQuery().data

JavaScript performance comparison

Revision 82 of this test case created

Preparation code

<script src="//ajax.googleapis.com/ajax/libs/jquery/1/jquery.min.js"></script>
<div id="el" data-id="1"></div>
<script>
  var i = 0,
      el = document.getElementById('el'),
      $el = $(el);
</script>

Preparation code output

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Testing in unknown unknown
Test Ops/sec
Data object reference
$el.data().id;
 
pending…
Data object property fetch
$el.data('id')
pending…

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