checking array.length vs array[0]
JavaScript performance comparison
Preparation code
<script>
Benchmark.prototype.setup = function() {
var buf = [], len = 1000;
while (len--)
buf.push(true);
};
Benchmark.prototype.teardown = function() {
var buf = [], len = 1000;
while (len--)
buf.push(true);
};
</script>
Test runner
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Java applet disabled.
| Test | Ops/sec | |
|---|---|---|
array.length |
|
pending… |
array[0] |
|
pending… |
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Revisions
You can edit these tests or add even more tests to this page by appending /edit to the URL. Here’s a list of current revisions for this page:
- Revision 1: published
- Revision 2: published
- Revision 3: published
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