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Run results for:
clearing array via pop() vs shift() vs .length = 0 vs = [] 1
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Embed Benchmark Result
<iframe src="https://measurethat.net/Embed?id=615189" width="100%" height="500px"></iframe>
Run details:
User agent:
Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:141.0) Gecko/20100101 Firefox/141.0
Browser:
Firefox 141
Operating system:
Windows
Device Platform:
Desktop
Date tested:
one year ago
reassignment
41K/s
.splice(0)
37K/s
length
36K/s
pop
26K/s
shift
10K/s
View exact numbers
Test name
Executions per second
✓
reassignment
41,088 Ops/sec
.splice(0)
37,112 Ops/sec
length
35,743 Ops/sec
pop
26,384 Ops/sec
shift
10,349 Ops/sec
Script Preparation code:
var array = []; for(var i = 0; i < 10000; i++){array.push(Math.random());}
Tests:
pop
let a = [...array]; while (a.length > 0) { a.pop(); }
shift
let a = [...array]; while (a.length > 0) { a.shift(); }
length
let a = [...array]; a.length = 0
reassignment
let a = [...array]; a = []
.splice(0)
let a = [...array]; a.splice(0);