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
Testing speed of a standard for loop vs. Array.indexOf.
<script>
var ar = [0, 1, 2, 3, 4, 5, 6, 7, 8, 9];
var random = Math.floor(Math.random() * (10 - 0 + 1)) + 0;
ar[random] = 22;
</script>
Ready to run.
Test | Ops/sec | |
---|---|---|
decrement for loop |
| ready |
for loop with 2 indexes? |
| ready |
indexOf |
| ready |
You can edit these tests or add more tests to this page by appending /edit to the URL.