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 = [];
for (var i=0; i<10000; i++) {
ar.push(Math.random()+5*Math.random());
if (i==4999) ar.push(5); }
function iOf(arr, item) {
for(var l=arr.length, n=0; n<l; n++)
if(arr[n] === item) return n;
return -1; }
</script>
Ready to run.
Test | Ops/sec | |
---|---|---|
For loop |
| ready |
other for-loop |
| ready |
indexOf |
| ready |
custom function |
| ready |
You can edit these tests or add more tests to this page by appending /edit to the URL.