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/86.0.4240.75 Safari/537.36

Browser: Chrome 86

Operating system: Windows

Device Platform: Desktop

Date tested: 4 years ago

Test name	Executions per second
includes	130498.3 Ops/sec
has	9203647.0 Ops/sec
convert to set before includes	1858.6 Ops/sec

HTML Preparation code:

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

AخA
 
<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)

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

Tests:

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