Run results for: Looping with Index: forEach vs array.entries vs for of

Run details:

User agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/605.1.15 (KHTML, like Gecko) Version/26.4 Safari/605.1.15

Browser: Safari 26

Operating system: Mac OS X 10.15.7

Device Platform: Desktop

Date tested: 3 months ago

for

3K/s

array.entries

3K/s

forEach

2K/s

View exact numbers

Script Preparation code:

const arr = Array.from({length: 1000}, () => Math.floor(Math.random() * 40));

Tests:

forEach
arr.forEach((item, index) => console.log(item + index))
array.entries
for(var [index, item] of arr.entries()){ console.log(item + index); }
for
for( var index = 0; index < arr.length; index++ ){ console.log(arr[index] + index); }