Run results for: Array.includes vs String.includes vs Object Hashmap vs Set vs Array.indexOf Large

Run details:

User agent: Mozilla/5.0 (iPad; CPU OS 18_3_0 like Mac OS X) AppleWebKit/605.1.15 (KHTML, like Gecko) CriOS/133.0.6943.33 Mobile/15E148 Safari/604.1

Browser: Chrome Mobile iOS 133

Operating system: iOS 18.3.0

Device Platform: Tablet

Date tested: one year ago

Object Hash-map

473.2M/s

Array.indexOf

470.7M/s

ES6 Set

429.3M/s

Array.includes

17.3M/s

String.includes

12.9M/s

View exact numbers

Test name	Executions per second
✓ Object Hash-map	473,191,008 Ops/sec
Array.indexOf	470,702,048 Ops/sec
ES6 Set	429,307,264 Ops/sec
Array.includes	17,318,366 Ops/sec
String.includes	12,903,018 Ops/sec

Script Preparation code:

var testArray = ['foo', 'a','b', 'c','d','e','f','g','h','i','j', 'k', 'l','m','n' ,'bar','o', 'p', 'q', 'r', 's','t','u', 'v','w','x','y', 'z'];
var testString = testArray.join(',');
var objectHash = testArray.reduce((acc, key) => {acc[key] = true; return acc;},{});
var testSet = new Set(testArray);

Tests: