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>
function C () {}
var ar = [];
var arHuge = [];
var len;
for (len = 10; len > 0; len--) {
ar.push(new C);
}
for (len = 1000; len > 0; len--) {
arHuge.push(new C);
}
var c1 = ar[5];
var c2 = arHuge[500];
</script>
Ready to run.
Test | Ops/sec | |
---|---|---|
For loop |
| ready |
other for-loop |
| ready |
indexOf |
| ready |
For loop Huge |
| ready |
indexOf Huge |
| ready |
forIn loop |
| ready |
forIn loop Huge |
| ready |
You can edit these tests or add more tests to this page by appending /edit to the URL.