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Run results for:
unshift() vs push() vs fill()
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Embed Benchmark Result
<iframe src="https://measurethat.net/Embed?id=604901" 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/136.0.0.0 Safari/537.36
Browser:
Chrome 136
Operating system:
Windows
Device Platform:
Desktop
Date tested:
one year ago
fill
3K/s
push
973/s
unshift
2/s
View exact numbers
Test name
Executions per second
✓
fill
2,749 Ops/sec
push
973 Ops/sec
unshift
2 Ops/sec
Script Preparation code:
var array = Array(100000);
Tests:
unshift
let a = []; for(var i = 0; i < 100000; ++i) { a.unshift(i); }
push
let a = []; for(var i = 0; i < 100000; ++i) { a.push(i); }
fill
for(var i = 0; i < array.length; ++i) { array[i] = i; }