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Run results for:
For in vs Object.*.forEach vs Object.values #3
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Run details:
User agent:
Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/121.0.0.0 Safari/537.36
Browser:
Chrome 121
Operating system:
Windows
Device Platform:
Desktop
Date tested:
2 years ago
Test name
Executions per second
Object values
486.3 Ops/sec
Object keys forEach
605.3 Ops/sec
Object entries forEach
403.7 Ops/sec
object values forEach
492.0 Ops/sec
For In
608.8 Ops/sec
Script Preparation code:
var obj = new Object() var keys = (new Array(100000)).fill(0).map((x, i) => { return i + 1 }) keys.forEach((x) => { obj['prop' + x] = x })
Tests:
Object.values for of
let result; for(let value of Object.values(obj)){ result = value; }
Object.keys forEach
let result; Object.keys(obj).forEach(key => result = obj[key]);
Object.entries forEach
let result; Object.entries(obj).forEach(([key, value]) => result = value);
Object.values forEach
let result Object.values(obj).forEach(value => result = value);
For in
let result; for (var key in obj) { result = obj[key]; }