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Run results for:
clearing array via pop() vs shift() vs .length = 0 vs = []
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Embed Benchmark Result
<iframe src="https://measurethat.net/Embed?id=514199" 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/123.0.0.0 Safari/537.36
Browser:
Chrome 123
Operating system:
Windows
Device Platform:
Desktop
Date tested:
2 years ago
shift
16.9M/s
pop
16.5M/s
.splice(0)
13.0M/s
reassignment
10.9M/s
length
10.7M/s
View exact numbers
Test name
Executions per second
✓
shift
16,860,426 Ops/sec
pop
16,546,661 Ops/sec
.splice(0)
12,978,626 Ops/sec
reassignment
10,938,024 Ops/sec
length
10,736,486 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(); }
length
array.length = 0
reassignment
array = []
.splice(0)
array.splice(0);