getElementById VS jQuery('#id')

JavaScript performance comparison

Revision 12 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() {
    window._2 = function(id) {
      return jQuery(document.getElementById(id));
    }
};
</script>

Preparation code output

Test

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Testing in unknown unknown
Test Ops/sec
getElementById
$(document.getElementById('foo'));
pending…
jQuery
$('#foo');
pending…
Custom Method
function _(id) {
  return jQuery(document.getElementById(id));
}
_('foo');
pending…
Custom method - predeclared
_2('foo');
pending…
querySelector
document.querySelector('#foo');
pending…
gId
document.getElementById("foo");
pending…

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