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
var arr = [1, 2, 3, 4, 5, 6, 7];
function fn_unshift() {
arr.unshift(0);
return arr;
}
function fn_concat_init() {
return [0].concat(arr)
}
Ready to run.
Test | Ops/sec | |
---|---|---|
Add element at the init of Array with unshift() |
| ready |
Add element at the init of Array with concat() |
| ready |
You can edit these tests or add more tests to this page by appending /edit to the URL.