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
var Array = window.Array;
var push = Array.prototype.push;
var slice = Array.prototype.slice;
var unshift = Array.prototype.unshift;
var concat = Array.prototype.concat;
function arrayConcat(array) {
return concat.call(array);
}
function arraySlice(array) {
return slice.call(array);
}
function arrayPush(array) {
var x = [];
push.apply(x, array);
return x;
}
function arrayUnshift(array) {
var x = [];
unshift.apply(x, array);
return x;
}
function whileLoop(array) {
var i = -1,
l = array.length,
x = Array(l);
while (++i < l) {
x[i] = array[i];
}
return x;
}
function byConstructor(array) {
return Array.apply(null, array);
}
var largeArray = Array(1001).join("a").split("");
var mediumArray = Array(101).join("a").split("");
var smallArray = Array(6).join("a").split("");
Ready to run.
Test | Ops/sec | |
---|---|---|
Array#slice |
| ready |
Array#push |
| ready |
Array#unshift |
| ready |
Array |
| ready |
while loop |
| ready |
Array#concat |
| ready |
You can edit these tests or add more tests to this page by appending /edit to the URL.