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
Rounding in all form possible
const numA = Math.random() * 1000000000;
const numB = Math.random() * 1000000000;
const numC = Math.random() * 1000000000;
const a = numA / numB;
const b = numA / numC;
const c = numB / numA;
const d = numB / numC;
const e = numC / numA;
const f = numC / numB;
function test(fn) {
fn(a);
fn(b);
fn(c);
fn(d);
fn(e);
fn(f);
}
Ready to run.
Test | Ops/sec | |
---|---|---|
Math.floor |
| ready |
Math.round |
| ready |
parseInt |
| ready |
Bitwise | |
| ready |
Bitwise >> |
| ready |
Bitwise ~~ |
| ready |
Bitwise << |
| ready |
Cached Math.floor |
| ready |
Cached Math.round |
| ready |
Hack with bitwise shift |
| ready |
toFixed |
| ready |
Hack ~~ |
| ready |
Hack Bitwise | |
| ready |
You can edit these tests or add more tests to this page by appending /edit to the URL.