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
function randStr(length) {
let result = '';
const characters = 'ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789';
const charactersLength = characters.length;
let counter = 0;
while (counter < length) {
result += characters.charAt(Math.floor(Math.random() * charactersLength));
counter += 1;
}
return result;
}
let loopLength = 2000;
let str;
Ready to run.
Test | Ops/sec | |
---|---|---|
String.split('') |
| ready |
spread operator [...String] |
| ready |
Array.from(String) |
| ready |
Object.assign([], String) |
| ready |
Regex .match(/./g) |
| ready |
You can edit these tests or add more tests to this page by appending /edit to the URL.