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
(This isn't a particularly useful revision -- just grabbing some ready-made logic for a quick check of some of the better candidates...)
<script>
var tArr = [0, 1, 2, 3, 4, 5, 6, 7, 8, 9],
arrReverse = tArr.reverse;
function bizarroArrReverse(arr) {
for ( var idx = (arr.length - 2); idx >= 0; idx-- ) {
arr.push(arr[idx]);
arr.splice(idx, 1);
}
return arr;
}
function swapLoopArrReverse(arr) {
var lIdx = 0, rIdx = (arr.length - 1), tmp;
for (lIdx, rIdx; lIdx < rIdx; lIdx++, rIdx--) {
tmp = arr[lIdx];
arr[lIdx] = arr[rIdx];
arr[rIdx] = tmp;
}
return arr;
}
</script>
Ready to run.
Test | Ops/sec | |
---|---|---|
Array.proto.reverse() |
| ready |
for push() then splice() |
| ready |
simple for swap |
| ready |
You can edit these tests or add more tests to this page by appending /edit to the URL.