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
Is it faster to use the native forEach or just loop with for?
<script>
var i, values = [],
sum = 0;
for (i = 0; i < 10000; i++) {
values[i] = i;
}
function add(val) {
sum += val;
}
</script>
sum = 0;
Ready to run.
Test | Ops/sec | |
---|---|---|
forEach |
| ready |
for loop, simple |
| ready |
for loop, cached length |
| ready |
for loop, reverse |
| ready |
for loop, cached length, no callback |
| ready |
for loop, cached length, using function.call and supplying index and original array |
| ready |
You can edit these tests or add more tests to this page by appending /edit to the URL.