Run results for: array.includes vs Set.has vs convert to set

Run details:

User agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/141.0.0.0 Safari/537.36

Browser: Chrome 141

Operating system: Windows

Device Platform: Desktop

Date tested: 11 months ago

Benchmark engine: Benchmark.js

has

228.2M/s

includes

72K/s

convert to set before includes

5K/s

View exact numbers

Test name	Executions per second
✓ has	228,181,120 Ops/sec
includes	71,821 Ops/sec
convert to set before includes	4,700 Ops/sec

HTML Preparation code:

<script src='https://cdnjs.cloudflare.com/ajax/libs/lodash.js/4.17.5/lodash.min.js'></script>

Script Preparation code:

var arr = _.times(8000, n => `elem_${n}`);
var se = new Set(arr)

Tests:

includes
arr.includes('elem_7999')
has
se.has('elem_7999')
convert to set before includes
var converted = new Set(arr); converted.has('elem_7999');