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 appendToArray1(arr, add){
const addSize = add.length;
if (addSize === 0) {
return;
}
const baseSize = arr.length;
arr.length = baseSize + addSize;
for (let i = 0; i < addSize; i++) {
arr[baseSize + i] = add[i];
}
}
function appendToArray2(arr, add){
const addSize = add.length;
if (addSize === 0) {
return;
}
const baseSize = arr.length;
arr.length = baseSize + addSize;
for (let i = 0; i < addSize; i++) {
const element = arr[i]
arr[baseSize + i] = element;
}
}
const ar = Array.from(Array(1000).keys())
const add = Array.from(Array(20000).keys())
Ready to run.
Test | Ops/sec | |
---|---|---|
appendToArray1 |
| ready |
appendToArray2 |
| ready |
You can edit these tests or add more tests to this page by appending /edit to the URL.