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 ar1=[];
for (var j=0;j<2000000;j++){
ar1.push(parseInt(Math.random(j*123)));
}
var ar2=[];
for (var j=0;j<2000000;j++){
ar2.push(parseInt(Math.random(j*300)));
}
</script>
Ready to run.
Test | Ops/sec | |
---|---|---|
For loop === |
| ready |
indexOf |
| ready |
For loop == |
| ready |
You can edit these tests or add more tests to this page by appending /edit to the URL.