getElementById VS jQuery('#id')

JavaScript performance comparison

Revision 44 of this test case created

Preparation code

<script src="http://ajax.googleapis.com/ajax/libs/jquery/1.7.1/jquery.min.js">
</script>
<p id="foo">
  Test
</p>
<p id="bar">
  bars</p>

Preparation code output

Test

bars

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Testing in unknown unknown
Test Ops/sec
getElementById
$(document.getElementById('foo'));
pending…
jQuery Selector
$('#foo');
pending…
Custom Method
function _(id){
    return jQuery(document.getElementById(id));
}
_('foo');
 
pending…
$ Custom Method
function _(id){
    return $(document.getElementById(id));
}
_('foo');
 
pending…
jQuery Window Object
$('#foo');
$('#bar');
pending…
realgetelementbyid
document.getElementById('foo');
pending…
typeof
if(typeof (document.getElementById('foo')) === "undefined"){}
pending…

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