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 i;
var packed_array1 = [0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10];
var packed_array2 = new Array(11);
for (i = 0; i < 11; i++ ) {
packed_array2[i] = i;
}
var holey_array1 = [0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10];
delete holey_array1[0];
var holey_array2 = [0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10];
holey_array2[13] = 0;
var holey_array3 = [0, 1, 2, 3, 4, 5, 6, 7, 8, 9, /* hole */, 10];
var holey_array4 = new Array(11);
// only fill the first 10 elements
for (i = 0; i < 10; i++) {
holey_array4[i] = i;
}
function sum(array) {
var sum = 0;
for (var i = 0; i < array.length; i++) {
if (typeof array[i] !== "undefined") {
sum += array[i];
}
}
}
Ready to run.
Test | Ops/sec | |
---|---|---|
Holey array sum 2 |
| ready |
Holey array sum 1 |
| ready |
Packed array sum 1 |
| ready |
Holey array sum 3 |
| ready |
Holey array sum 4 |
| ready |
Packed array sum 2 |
| ready |
You can edit these tests or add more tests to this page by appending /edit to the URL.