jsPerf.app is an online JavaScript performance benchmark test runner & jsperf.com mirror. It is a complete rewrite in homage to the once excellent jsperf.com now with hopefully a more modern & maintainable codebase.
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https://jsperf.com/negative-modulo/2
Can be accessed at:
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Testing Object.keys vs for-in. I see that SlickGrid uses objects with indexed keys rather than arrays. Confused....
<script src="https://ajax.googleapis.com/ajax/libs/jquery/1/jquery.min.js">
</script>
<script>
var data = Object.create(null);
var out = {};
for (var i = 0; i < 100000; i++) {
var key = 'user ' + i;
data[key] = key + i;
}
</script>
Ready to run.
Test | Ops/sec | |
---|---|---|
for-in |
| ready |
object-keys-foreach |
| ready |
object-keys |
| ready |
object.getownpropertynames |
| ready |
$.each |
| ready |
You can edit these tests or add more tests to this page by appending /edit to the URL.