jQuery().attr vs jQuery().data vs jQuery().prop

JavaScript performance comparison

Revision 81 of this test case created by

Preparation code 

<script src="https://ajax.googleapis.com/ajax/libs/jquery/1/jquery.min.js"></script>
<div id="el"></div>
<script>
  var i = 0,
      el = document.getElementById('el'),
      $el = $(el),
      setData = function (element, key, value) {
          element['_pref_'+key] = value;
      };
</script>

Preparation code output

<div id="el"></div> <script> var i = 0, el = document.getElementById('el'), $el = $(el), setData = function (element, key, value) { element['_pref_'+key] = value; }; </script>

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Testing in CCBot 2.0.0 / Other 0.0.0
Test Ops/sec
jQuery.fn.attr 
$el.attr('key-' + Math.floor(Math.random() * 1001), 'val-' + Math.floor(Math.random() * 1001));
 pending…
jQuery.fn.data 
$el.data('key-' + Math.floor(Math.random() * 1001), 'val-' + Math.floor(Math.random() * 1001));
 pending…
jQuery.fn.prop 
$el.prop('key-' + Math.floor(Math.random() * 1001), 'val-' + Math.floor(Math.random() * 1001));
 pending…
nativo 
el['key-' + Math.floor(Math.random() * 1001)] = 'val-' + Math.floor(Math.random() * 1001);
 pending…
setData 
setData(el,'key-' + Math.floor(Math.random() * 1001),'val-' + Math.floor(Math.random() * 1001));
 pending…

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