for vs forEach
JavaScript performance comparison
Preparation code
<script>
var i, values = [],
sum = 0;
for (i = 0; i < 10000; i++) {
values[i] = i;
}
function add(val) {
sum += val;
}
</script>
Test runner
Warning! For accurate results, please disable Firebug before running the tests. (Why?)
Java applet disabled.
Test | Ops/sec | |
---|---|---|
forEach
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for loop, simple
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pending… |
for loop, cached length
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pending… |
for loop, reverse
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pending… |
forEach more local
|
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pending… |
while
|
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pending… |
Compare results of other browsers
Revisions
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- Revision 2: published Adrian Sutton
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- Revision 303: published CSS style setter
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- Revision 346: published Christopher Haws
- Revision 348: published foreach vs while
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- Revision 389: published GeoTest
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- Revision 604: published Johnny Zarate
- Revision 606: published Steven Murray
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- Revision 608: published Andrii Muzalevskyi
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- Revision 654: published Dylan Mozlowski
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