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Run results for:
clearing array via pop() vs shift() vs .length = 0 vs = []
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<iframe src="https://measurethat.net/Embed?id=506990" width="100%" height="500px"></iframe>
Run details:
User agent:
Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:123.0) Gecko/20100101 Firefox/123.0
Browser:
Firefox 123
Operating system:
Windows
Device Platform:
Desktop
Date tested:
2 years ago
Test name
Executions per second
pop
167060112.0 Ops/sec
shift
643970304.0 Ops/sec
length
49808884.0 Ops/sec
reassignment
93598536.0 Ops/sec
.splice(0)
23984938.0 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);