Run results for: for vs while vs for of vs forEach2 - MeasureThat.net

Run details:

User agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/110.0.0.0 Safari/537.36

Browser: Chrome 110

Operating system: Windows

Device Platform: Desktop

Date tested: one year ago

Test name	Executions per second
for i++	6023.0 Ops/sec
for i--	11976.0 Ops/sec
for of	1314660.0 Ops/sec
forEach	2380888.0 Ops/sec

Website performance monitoring

Script Preparation code:

var arr = []
for (var i = 0; i < 1000; i++) arr[i] = i

Tests:

for i++
for (let i = 0; i < arr.length; i++) { let a = arr[i] }
for i--
for (let i = arr.length; i >= 0; i--) { let a = arr[i] }
for of
for (let v of arr) { let a = v }
forEach
arr.forEach(v => { let a = v })