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
It seems the latest and greatest JavaScript engines have catched up and loop unrolling is not as great a speedup as it once was. Still, both unrolled loop variants are 10% to 25% faster than the for loop on both Safari 5 and Chrome 5.
<script>
var a = 0;
</script>
Ready to run.
Test | Ops/sec | |
---|---|---|
For loop |
| ready |
Unrolled loop |
| ready |
Unrolled loop (1 statement) |
| ready |
Partial Unrolling |
| ready |
You can edit these tests or add more tests to this page by appending /edit to the URL.