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Run results for:
clearing array via pop() vs shift() vs .length = 0 vs = []
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Run details:
User agent:
Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/128.0.0.0 Safari/537.36
Browser:
Chrome 128
Operating system:
Windows
Device Platform:
Desktop
Date tested:
one year ago
shift
10.3M/s
pop
9.6M/s
reassignment
6.9M/s
length
6.2M/s
View exact numbers
Test name
Executions per second
✓
shift
10,301,774 Ops/sec
pop
9,617,282 Ops/sec
reassignment
6,856,562 Ops/sec
length
6,237,546 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 = []