Benchmark: For preallocate - MeasureThat.net

Tests:

Preallocate
let a=new Array(1000) for (let i=0;i<a.length;i++) { a[i]=i; }
Preallocate with fill
let a=new Array(1000).fill(0) for (let i=1;i<a.length;i++) { a[i]=i; }
Non preallocate
let a=[] for (let i=0;i<a.length;i++) { a[i]=i; }
Int32array
let a=new Int8Array(1000) for (let i=1;i<a.length;i++) { a[i]=i; }

Rendered benchmark preparation results:

Previous results

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Latest run results:

Run details: (Test run date: 3 years ago)

User agent: Mozilla/5.0 (X11; CrOS aarch64 13421.102.0) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/86.0.4240.199 Safari/537.36

Browser/OS: Chrome 86 on Chrome OS 13421.102.0

For preallocate (version: 0)