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 indexOf = function(arr, tosearch) {
for (var i=0, t=arr.length; i<t; i++)
if (arr[i] === tosearch && typeof arr[i] == typeof tosearch)
return i;
return -1;
};
var ar = [];
for(var i = 99999; i--;){
ar.push({});
}
var tosearch = ar[99990];
</script>
Ready to run.
Test | Ops/sec | |
---|---|---|
For loop |
| ready |
other for-loop |
| ready |
indexOf |
| ready |
custom indexOf |
| ready |
You can edit these tests or add more tests to this page by appending /edit to the URL.