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Run results for:
Looping with Index: forEach vs array.entries vs for of
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Run details:
User agent:
Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/143.0.0.0 Safari/537.36 Edg/143.0.0.0
Browser:
Chrome 143
Operating system:
Mac OS X 10.15.7
Device Platform:
Desktop
Date tested:
4 months ago
Test name
Executions per second
forEach
468.0 Ops/sec
array.entries
462.3 Ops/sec
for
515.4 Ops/sec
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); }