getElementById VS jQuery('#id') VS jQuery('#id', 'body')

JavaScript performance comparison

Revision 47 of this test case created

Preparation code

<script src="//ajax.googleapis.com/ajax/libs/jquery/1/jquery.min.js">
</script>
<div id="#container'>
<p id="foo">
  Test
</p>
</div>
<script>
Benchmark.prototype.setup = function() {
    window.container = $('#container')[0];
};
</script>

Preparation code output

Test

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Testing in unknown unknown
Test Ops/sec
getElementById
document.getElementById('foo');
pending…
jQuery
$('#foo');
pending…
jQuery (w/ context query)
$('#foo', '#container');
pending…
jQuery (w/ context)
$('#foo', window.divContainer);
pending…
jQuery (w/ selector)
$('div#container #foo');
pending…
jQuery (w/ find)
$('#container').find('#foo');
pending…
byId then jQ
$(document.getElementById('foo'));
pending…

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