Run results for: JS loops and iterators

Run details:

User agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:149.0) Gecko/20100101 Firefox/149.0

Browser: Firefox 149

Operating system: Windows

Device Platform: Desktop

Date tested: one month ago

Test name

Executions per second

✓ Optimised while loop

667,296 Ops/sec

Optimised classic for loop

626,806 Ops/sec

While loop

619,855 Ops/sec

Classic for loop

589,707 Ops/sec

Array.prototype.forEach

182,040 Ops/sec

Array.prototype.reduce

168,281 Ops/sec

For - of loop

133,108 Ops/sec

For - in loop

14,933 Ops/sec

Tests:

Classic for loop
let sum = 0; for (let i=0; i < array.length; i++) { sum += array[i]; }
Optimised classic for loop
let sum = 0; for (let i=0, len=array.length; i < len; i++) { sum += array[i]; }
While loop
let sum = 0; let i = 0; while (i < array.length) { sum += array[i]; i++; }
Optimised while loop
let sum = 0; let i = 0; let len = array.length; while (i < len) { sum += array[i]; i++; }
Array.prototype.forEach
let sum = 0; array.forEach(num => sum += num);
Array.prototype.reduce
const sum = array.reduce((acc, el) => acc + el, 0);
For - of loop
let sum = 0; for (let el of array) { sum += el; }
For - in loop
let sum = 0; for (let i in array) { sum += array[i]; }