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

Run details:

User agent: Mozilla/5.0 (Linux; Android 7.0; LG-M400) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/87.0.4280.101 Mobile Safari/537.36

Browser: Chrome Mobile 87

Operating system: Android 7.0

Device Platform: Mobile

Date tested: 3 years ago

Script Preparation code:

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

Tests: