Run results for: Сreate a copy of an array by reference (Spread, Concat, Slice, Splice)

Run details:

User agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/120.0.0.0 Safari/537.36

Browser: Chrome 120

Operating system: Windows

Device Platform: Desktop

Date tested: 2 years ago

Benchmark engine: Benchmark.js

Splice

26.6M/s

Spread

6.9M/s

Concat Array to empty

6.8M/s

Slice

6.3M/s

Concat empty to Array

4.7M/s

View exact numbers

Script Preparation code:

var arr = Array.from({length: 1000}, () => Math.floor(Math.random() * 4000));

Tests: