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
const obj = {};
for (let i=0; i<1e3; i++) {
obj[Math.random().toString()] = Math.random();
}
const map = new Map(Object.entries(obj));
let sum = 0;
let arr = [];
Ready to run.
Test | Ops/sec | |
---|---|---|
for...in |
| ready |
for...of Object.keys |
| ready |
Object.keys().forEach |
| ready |
for...of Object.entries |
| ready |
for...of map (entries) |
| ready |
for...of map.keys() |
| ready |
You can edit these tests or add more tests to this page by appending /edit to the URL.