id selector vs next
JavaScript performance comparison
Preparation code
<script src="//ajax.googleapis.com/ajax/libs/jquery/1/jquery.min.js"></script>
<div id="a">Test</div>
<div id="a_abc">Testing</div>
<script>
Benchmark.prototype.setup = function() {
var testDiv = document.getElementById('a');
};
</script>
Preparation code output
Test
Testing
Test runner
Warning! For accurate results, please disable Firebug before running the tests. (Why?)
Java applet disabled.
| Test | Ops/sec | |
|---|---|---|
id selector (this.id) |
|
pending… |
next |
|
pending… |
id selector (.attr()) |
|
pending… |
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