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Run results for:
pop() vs shift() vs unshift vs pop
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Embed Benchmark Result
<iframe src="https://measurethat.net/Embed?id=603215" width="100%" height="500px"></iframe>
Run details:
User agent:
Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:139.0) Gecko/20100101 Firefox/139.0
Browser:
Firefox 139
Operating system:
Windows
Device Platform:
Desktop
Date tested:
one year ago
shift
2145.8M/s
pop
226.8M/s
push
5K/s
unshift
416/s
View exact numbers
Test name
Executions per second
✓
shift
2,145,827,072 Ops/sec
pop
226,848,304 Ops/sec
push
4,555 Ops/sec
unshift
416 Ops/sec
Script Preparation code:
var array = []; for(var i = 0; i < 100000; i++){array.push(Math.random());}
Tests:
pop
while (array.length > 0) { array.pop(); }
shift
while (array.length > 0) { array.shift(); }
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); }