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Run results for:
Array.from vs Array.map vs native for loop
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Run details:
User agent:
Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/138.0.0.0 Safari/537.36
Browser:
Chrome 138
Operating system:
Mac OS X 10.15.7
Device Platform:
Desktop
Date tested:
9 months ago
Test name
Executions per second
fromArray()
54009.9 Ops/sec
mapArray()
330865.1 Ops/sec
forLoop()
379076.2 Ops/sec
Script Preparation code:
const dataList = new Array(1000).fill({ name: 'foo' }); function fromArray() { return Array.from(dataList, ({ name }) => name); } function mapArray() { return dataList.map(({ name }) => name); } function forLoop() { const newList = []; for (const item of dataList) { newList.push(item); } return newList; }
Tests:
fromArray()
fromArray()
mapArray()
mapArray()
forLoop()
forLoop()