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
<p>Just how <em>slow</em> are closures?</p>
function fn(data) {
if (data.x < 10) {
return data.y * 30 / (data.x + 10);
}
if (data.x < 20) {
return (data.y / data.x)
}
return data.y * 100 / (data.x / 10)
}
let dataList = new Array(100)
for (let i = 0; i < dataList.length; i++) {
let x = Math.ceil(Math.random() * 50)
let y = Math.ceil(Math.random() * 200)
dataList[i] = { x, y }
}
Ready to run.
Test | Ops/sec | |
---|---|---|
with closures |
| ready |
fn, data |
| ready |
foreach |
| ready |
for each without closure |
| ready |
You can edit these tests or add more tests to this page by appending /edit to the URL.