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 LargeObj = function(num) { this.num = num; };
var packed_array = [new LargeObj(0), new LargeObj(1), new LargeObj(2), new LargeObj(3), new LargeObj(4), new LargeObj(5), new LargeObj(6), new LargeObj(7), new LargeObj(8), new LargeObj(9)];
var holey_array1 = [new LargeObj(0), new LargeObj(1), new LargeObj(2), new LargeObj(3), new LargeObj(4), new LargeObj(5), new LargeObj(6), new LargeObj(7), new LargeObj(8), new LargeObj(9)];
delete holey_array1[1];
var holey_array2 = [new LargeObj(0), new LargeObj(1), new LargeObj(2), new LargeObj(3), new LargeObj(4), new LargeObj(5), new LargeObj(6), new LargeObj(7), new LargeObj(8)];
holey_array2[13] = new LargeObj(13);
var holey_array3 = [new LargeObj(0), new LargeObj(1), new LargeObj(2), new LargeObj(3), new LargeObj(4), new LargeObj(5), new LargeObj(6), new LargeObj(7), /* hole */, new LargeObj(9)];
var holey_array4 = [new LargeObj(0), new LargeObj(1), new LargeObj(2), new LargeObj(3), new LargeObj(4), new LargeObj(5), new LargeObj(6), new LargeObj(7), new LargeObj(8), new LargeObj(9)];
holey_array1[1] = false;
function packed_sum() {
var sum = 0;
for (var i = 0; i < packed_array.length; i++) {
if (packed_array[i]) {
sum += packed_array[i].num;
}
}
}
function holey_sum1() {
var sum = 0;
for (var i = 0; i < holey_array1.length; i++) {
if (holey_array1[i]) {
sum += holey_array1[i].num;
}
}
}
function holey_sum2() {
var sum = 0;
for (var i = 0; i < holey_array2.length; i++) {
if (holey_array2[i]) {
sum += holey_array2[i].num;
}
}
}
function holey_sum3() {
var sum = 0;
for (var i = 0; i < holey_array3.length; i++) {
if (holey_array3[i]) {
sum += holey_array3[i].num;
}
}
}
function holey_sum4() {
var sum = 0;
for (var i = 0; i < holey_array4.length; i++) {
if (holey_array4[i]) {
sum += holey_array4[i].num;
}
}
}
Ready to run.
Test | Ops/sec | |
---|---|---|
Packed array sum |
| ready |
Holey array sum 1 |
| ready |
Holey array sum 2 |
| ready |
Holey array sum 3 |
| ready |
Holey array sum 4 |
| ready |
You can edit these tests or add more tests to this page by appending /edit to the URL.