getElementById VS jQuery('#id')

JavaScript performance comparison

Revision 115 of this test case created

Preparation code

<script src="//ajax.googleapis.com/ajax/libs/jquery/1/jquery.min.js">
</script>
<p id="foo">
  Test
</p>
<script>
Benchmark.prototype.setup = function() {
    var x = $(document);
   
   
};
</script>

Preparation code output

Test

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Testing in unknown unknown
Test Ops/sec
getElementById
var x = document.getElementById('foo');
pending…
jQuery selector
var x = $('#foo');
pending…
pass getElementById() to jQuery
var x = $(document.getElementById('foo'));
pending…
getElementById reusing cached object
x[0] = document.getElementById("foo");
pending…

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