Run results for: array includes vs object key lookup, large arrays

Run details:

User agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:128.0) Gecko/20100101 Firefox/128.0

Browser: Firefox 128

Operating system: Windows

Device Platform: Desktop

Date tested: 10 months ago

lookup

1342.6M/s

includes

26.4M/s

View exact numbers

Test name	Executions per second
✓ lookup	1,342,648,960 Ops/sec
includes	26,375,146 Ops/sec

Script Preparation code:

var a = Array.from({length:500},(v,k)=>k+1)
var b = Object.assign({}, ...a.map((x) => ({[x]: true})));

Tests: