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.
jsperf.com URLs are mirrored at the same path, e.g:
https://jsperf.com/negative-modulo/2
Can be accessed at:
https://jsperf.app/negative-modulo/2
Comparing minor differences in initiating FOR loops.
Checking difference between caching the array length in a variable before initializing the loop.
<script>
var a = new Array(),
b = 1000,
n = '',
i, j;
for (j = 0; j < b; j = j + 1) {
a.push(j);
}
var x = a.length;
</script>
Ready to run.
Test | Ops/sec | |
---|---|---|
Length not cached |
| ready |
Length cached |
| ready |
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