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Run results for:
clearing array via pop() vs shift() vs .length = 0 vs = [] (200k)
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Embed Benchmark Result
<iframe src="https://measurethat.net/Embed?id=599330" width="100%" height="500px"></iframe>
Run details:
User agent:
Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/135.0.0.0 Safari/537.36
Browser:
Chrome 135
Operating system:
Mac OS X 10.15.7
Device Platform:
Desktop
Date tested:
one year ago
pop
140.7M/s
shift
133.3M/s
.splice(0)
55.1M/s
length
37.2M/s
reassignment
11.8M/s
View exact numbers
Test name
Executions per second
✓
pop
140,683,728 Ops/sec
shift
133,321,992 Ops/sec
.splice(0)
55,064,796 Ops/sec
length
37,224,012 Ops/sec
reassignment
11,846,727 Ops/sec
Script Preparation code:
var array = []; for(var i = 0; i < 200000; 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);