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

Run details:

User agent: Mozilla/5.0 (iPhone; CPU iPhone OS 17_0 like Mac OS X) AppleWebKit/605.1.15 (KHTML, like Gecko) Version/17.0 Mobile/15E148 Safari/604.1

Browser: Mobile Safari 17

Operating system: iOS 17.0

Device Platform: Mobile

Date tested: one year ago

Script Preparation code:

var a = [
  9,
  2,
  5,
  6,
];
var b = new Set(a)

Tests: