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Run results for:
clearing array via pop() vs shift() vs .length = 0 vs = [] (200k)
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<iframe src="https://measurethat.net/Embed?id=599328" 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
Test name
Executions per second
pop
107116536.0 Ops/sec
shift
105103192.0 Ops/sec
length
37200740.0 Ops/sec
reassignment
11809081.0 Ops/sec
.splice(0)
55220360.0 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);