jQuery("#id")

JavaScript performance comparison

Revision 11 of this test case created by Jens

Info

The duplicate id optimization in jQuery.fn.init has been removed. Check the loss.

Preparation code

<script src="//ajax.googleapis.com/ajax/libs/jquery/1.8.3/jquery.min.js">
</script>
<script>
  var $1_8_3 = jQuery.noConflict();
</script>
<script src="https://dl.dropbox.com/u/6407061/jQuery/sizzle_optimize/jquery.js">
</script>
<script>
  var $git = jQuery.noConflict();
</script>
<div id="test" class="test">
  <div id="child">
  </div>
</div>
<div class="test">
</div>
<div class="test">
</div>
<div class="test">
</div>
<div class="test">
</div>
<div class="test">
</div>
<script>
Benchmark.prototype.setup = function() {
    var $1_8_3test = $1_8_3("#test");
    var $gittest = $git("#test");
};
</script>

Preparation code output

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Testing in unknown unknown
Test Ops/sec
1.8.3 id
$1_8_3("#test");
pending…
git id
$git("#test");
pending…
1.8.3 element id
$1_8_3test.find("#child");
pending…
git element id
$gittest.find("#child");
pending…
1.8.3 class
$1_8_3(".test");
pending…
git class
$git(".test");
pending…
document.getElementById()
$git(document.getElementById("test"));
pending…
$1_8_3(document.getElementById("test"));
pending…

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