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Run results for:
Array.from VS spreading for
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<iframe src="https://measurethat.net/Embed?id=514655" 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/123.0.0.0 Safari/537.36
Browser:
Chrome 123
Operating system:
Windows
Device Platform:
Desktop
Date tested:
2 years ago
Array.from (1000 elements)
78K/s
spreading (1000 elements)
68K/s
Array.from (1mil elements)
44/s
spreading (1mil elements)
14/s
View exact numbers
Test name
Executions per second
✓
Array.from (1000 elements)
77,519 Ops/sec
spreading (1000 elements)
67,711 Ops/sec
Array.from (1mil elements)
44 Ops/sec
spreading (1mil elements)
14 Ops/sec
Script Preparation code:
var arr1000 = new Array(1000).fill(0).map((x) => Math.random()) var arr1000000 = new Array(1000000).fill(0).map((x) => Math.random())
Tests:
Array.from (1000 elements)
const valueFromArray = Array.from(arr1000)
spreading (1000 elements)
const valueFromSpreading = [...arr1000]
Array.from (1mil elements)
const valueFromArray = Array.from(arr1000000)
spreading (1mil elements)
const valueFromSpreading = [...arr1000000]