Run results for: for vs while vs for of vs forEach4 - MeasureThat.net

Run details:

User agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/605.1.15 (KHTML, like Gecko) Version/16.4 Safari/605.1.15

Browser: Safari 16

Operating system: Mac OS X 10.15.7

Device Platform: Desktop

Date tested: one year ago

Test name	Executions per second
for i++	19231.2 Ops/sec
for i--	1839108.0 Ops/sec
while i--	1102841.0 Ops/sec
for of	513210.5 Ops/sec
forEach	688291.4 Ops/sec

Website performance monitoring

Script Preparation code:

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

Tests:

for i++
for (var i = 0; i < arr.length; i++) { }
for i--
for (var i = arr.length; i >= 0; i--) { }
while i--
var i = arr.length while (i--) { }
for of
for (var v of arr) { }
forEach
arr.forEach(v => { })