Run results for: set.has vs. array.includes (random string values)

Run details:

User agent: Mozilla/5.0 (X11; Ubuntu; Linux x86_64; rv:91.0) Gecko/20100101 Firefox/91.0

Browser: Firefox 91

Operating system: Ubuntu

Device Platform: Desktop

Date tested: 3 years ago

Test name	Executions per second
arr.includes	16969132.0 Ops/sec
set.has	21037558.0 Ops/sec

Script Preparation code:

var a = [
    'height',
    'width',
    'maxHeight',
    'maxWidth',
    'maxHeight',
    'minWidth',
    'color',
    'bg',
    'backgroundColor',
    'opacity',
    'm',
    'mt',
    'mb',
    'mr',
    'mr',
    'mx',
    'my',
    'p',
    'pt',
    'pb',
    'pr',
    'pl',
    'px',
    'py',
    'border',
    'boxShadow',
    'flex',
    'verticalAlign',
    'textAlign',
    'overflow',
    'display',
    'cursor'
];
var b = new Set(a)

Tests:

arr.includes
return a.includes(a[Math.floor(Math.random() * a.length)])
set.has
return b.has(a[Math.floor(Math.random() * a.length)])

Run results for: set.has vs. array.includes (random string values)

arr.includes

set.has