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Run results for:
Array.from() vs new Array() vs push vs [i] pushup
Testing the difference between creating filled arrays.
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<iframe src="https://measurethat.net/Embed?id=512898" width="100%" height="500px"></iframe>
Run details:
User agent:
Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/122.0.0.0 Safari/537.36
Browser:
Chrome 122
Operating system:
Windows
Device Platform:
Desktop
Date tested:
2 years ago
Test name
Executions per second
new Array()
546069.5 Ops/sec
Array.from()
28793.0 Ops/sec
push
454521.4 Ops/sec
[i]
374832.4 Ops/sec
Tests:
new Array()
new Array(500).fill("push-up", 0, 500)
Array.from()
Array.from({ length: 500 }, () => "push-up")
push
let array = []; for (let i = 0; i < 500; i++){ array.push("push-up") }
[i]
let array = []; for (let i = 0; i < 500; i++){ array[i] = "push-up" }