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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=540960" width="100%" height="500px"></iframe>
Run details:
User agent:
Mozilla/5.0 (Macintosh; Intel Mac OS X 10.15; rv:129.0) Gecko/20100101 Firefox/129.0
Browser:
Firefox 129
Operating system:
Mac OS X 10.15
Device Platform:
Desktop
Date tested:
one year ago
shift
1365.0M/s
pop
334.3M/s
push
3K/s
unshift
289/s
View exact numbers
Test name
Executions per second
✓
shift
1,365,015,168 Ops/sec
pop
334,296,384 Ops/sec
push
3,360 Ops/sec
unshift
289 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); }