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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 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/121.0.0.0 Safari/537.36
Browser:
Chrome 121
Operating system:
Linux
Device Platform:
Desktop
Date tested:
2 years ago
shift
14.2M/s
pop
14.1M/s
.splice(0)
10.9M/s
reassignment
9.9M/s
length
8.8M/s
View exact numbers
Test name
Executions per second
✓
shift
14,248,705 Ops/sec
pop
14,077,398 Ops/sec
.splice(0)
10,864,265 Ops/sec
reassignment
9,932,006 Ops/sec
length
8,818,182 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);