`Array.slice(0, N)` vs `Array.length = N`

4 months ago
User agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/126.0.0.0 Safari/537.36
Test name Executions per second
`Array.slice(0, N)` 14201890.0 Ops/sec
`Array.length = N` 10926810.0 Ops/sec
`Object.assign([], arr)` with `Array.length = N` 283612.8 Ops/sec
Script Preparation code:
Tests:
  • `Array.slice(0, N)`

  • `Array.length = N`

  • `Object.assign([], arr)` with `Array.length = N`

Open this result on MeasureThat.net