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Run results for:
Array for vs Array for of vs Set for of vs Map for of
Testing the difference between native loops and find()
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<iframe src="https://measurethat.net/Embed?id=608068" width="100%" height="500px"></iframe>
Run details:
User agent:
Mozilla/5.0 (X11; Ubuntu; Linux x86_64; rv:139.0) Gecko/20100101 Firefox/139.0
Browser:
Firefox 139
Operating system:
Ubuntu
Device Platform:
Desktop
Date tested:
one year ago
Array for-loop
7.0M/s
Array for..of
3.7M/s
Set for of
1.0M/s
Map for of
593K/s
View exact numbers
Test name
Executions per second
✓
Array for-loop
6,950,976 Ops/sec
Array for..of
3,705,400 Ops/sec
Set for of
1,017,015 Ops/sec
Map for of
593,426 Ops/sec
HTML Preparation code:
<div id='test'></div>
Script Preparation code:
function fn() {} var arr = new Array(100).fill(0).map((x, i) => i.toString()); var set = new Set(arr); var map = new Map(arr.map((x, i) => [i, x]));
Tests:
Array for-loop
var t = 0; for(i=0, l = arr.length; i<l; i++){ t = arr[i] }
Array for..of
var t = 0; for (let value of arr) { t = value; }
Set for of
var t = 0; for (let value of set) { t = value; }
Map for of
var t = 0; for (let [key, value] of map) { t = value; }