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Run results for:
Array push vs map v1
Compare the new ES6 spread operator with the traditional concat() method and push
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<iframe src="https://measurethat.net/Embed?id=577341" width="100%" height="500px"></iframe>
Run details:
User agent:
Mozilla/5.0 (X11; Linux x86_64; rv:133.0) Gecko/20100101 Firefox/133.0
Browser:
Firefox 133
Operating system:
Linux
Device Platform:
Desktop
Date tested:
one year ago
array.map
8.8M/s
array.push
1.0M/s
View exact numbers
Test name
Executions per second
✓
array.map
8,813,303 Ops/sec
array.push
1,022,316 Ops/sec
Script Preparation code:
var a1 = [] var a2 = new Array(10).fill(null)
Tests:
array.push
for (let i = 0; i < 10; i++) { a1.push({ itemIndex: i }) }
array.map
a2.map((_, i) => ({ itemIndex: i }))