Cached DOM Traversal VS New ID selection

JavaScript performance comparison

Test case created by Jason

Preparation code

<script src="https://ajax.googleapis.com/ajax/libs/jquery/1/jquery.min.js"></script>

<div class="myclass" id="myid">
    <a href="javascript:">Click me!</a>
</div>
      
<script>
Benchmark.prototype.setup = function() {
  var link = $('a');

};
</script>

Preparation code output

<div class="myclass" id="myid"> <a href="javascript:">Click me!</a> </div>

Test runner

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Java applet disabled.

Testing in CCBot 2.0.0 / Other 0.0.0
Test Ops/sec
Traverse .closest()
link.closest('.myclass');
pending…
Fresh ID
$('#myid');
pending…
Traverse .parent()
link.parent();
pending…
Traverse .parents()
link.parents('.myclass');
pending…
Fresh object from class
$('.myclass');
pending…

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Revisions

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