Run results for: set.has vs. array.includes vs array.indexOf (integer values, small number of elements)

Run details:

User agent: Mozilla/5.0 (X11; Ubuntu; Linux x86_64; rv:84.0) Gecko/20100101 Firefox/84.0

Browser: Firefox 84

Operating system: Ubuntu

Device Platform: Desktop

Date tested: 3 years ago

Script Preparation code:

var a = [ 1, 4, 3, 7, -4];
var b = new Set(a)

Tests: