Run results for: while vs for vs forEach vs for of - 1000000 - calc exponent - MeasureThat.net

Run details:

User agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/93.0.4577.82 Safari/537.36

Browser: Chrome 93

Operating system: Windows

Device Platform: Desktop

Date tested: 2 years ago

Test name	Executions per second
while	6.7 Ops/sec
for	6.7 Ops/sec
forEach	367.6 Ops/sec
for of	1863.5 Ops/sec

Website performance monitoring

Script Preparation code:

var arr =new Array(1000000);

Tests:

while
let i=0; while(i < arr.length) { const exp = arr[i] ** 2; i++; }
for
for(let i=0; i<arr.length; i++) { const exp = arr[i] ** 2; }
forEach
arr.forEach((element) => { const exp = element ** 2; });
for of
for(const element of arr) { const exp = element ** 2; }