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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=565526" width="100%" height="500px"></iframe>
Run details:
User agent:
Mozilla/5.0 (Macintosh; Intel Mac OS X 10.15; rv:132.0) Gecko/20100101 Firefox/132.0
Browser:
Firefox 132
Operating system:
Mac OS X 10.15
Device Platform:
Desktop
Date tested:
one year ago
shift
523.6M/s
pop
111.7M/s
push
2K/s
unshift
155/s
View exact numbers
Test name
Executions per second
✓
shift
523,574,272 Ops/sec
pop
111,660,432 Ops/sec
push
1,503 Ops/sec
unshift
155 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); }