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Run results for:
For in vs Object.*.forEach vs Object.values
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<iframe src="https://measurethat.net/Embed?id=575079" width="100%" height="500px"></iframe>
Run details:
User agent:
Mozilla/5.0 (X11; Ubuntu; Linux x86_64; rv:133.0) Gecko/20100101 Firefox/133.0
Browser:
Firefox 133
Operating system:
Ubuntu
Device Platform:
Desktop
Date tested:
one year ago
Object keys forEach
11/s
For In
11/s
Object values
11/s
object values forEach
11/s
Object entries forEach
10/s
View exact numbers
Test name
Executions per second
✓
Object keys forEach
11 Ops/sec
For In
11 Ops/sec
Object values
11 Ops/sec
object values forEach
11 Ops/sec
Object entries forEach
10 Ops/sec
Script Preparation code:
var obj = new Object() var keys = (new Array(10000)).fill(0).map((x, i) => { return i + 1 }) keys.forEach((x) => { obj['prop' + x] = x })
Tests:
For In
for (var key in obj) { console.log(obj[key]); }
Object values
for(let value of Object.values(obj)){ console.log(value); }
Object keys forEach
Object.keys(obj).forEach(key => console.log(obj[key]));
Object entries forEach
Object.entries(obj).forEach(([key, value]) => console.log(key,'->',value));
object values forEach
Object.values(obj).forEach(value => console.log(value));