Run results for: Array vs Object vs Map vs WeakMap access (3)

Run details:

User agent: Mozilla/5.0 (iPhone; CPU iPhone OS 18_0 like Mac OS X) AppleWebKit/605.1.15 (KHTML, like Gecko) CriOS/130.0.6723.78 Mobile/15E148 Safari/604.1

Browser: Chrome Mobile iOS 130

Operating system: iOS 18.0

Device Platform: Mobile

Date tested: one year ago

Map.get

39.1M/s

WeakMap.get

39.0M/s

array[0]

38.3M/s

object.a

33.0M/s

object[symbol]

18.1M/s

View exact numbers

Test name	Executions per second
✓ Map.get	39,078,440 Ops/sec
WeakMap.get	39,040,812 Ops/sec
array[0]	38,254,896 Ops/sec
object.a	33,029,176 Ops/sec
object[symbol]	18,068,482 Ops/sec

Script Preparation code:

var map = new Map();
var weakMap = new WeakMap()
var array = [];
var object = {};
var symbol = Symbol('next');

Tests:

Map.get
map.get("0");
WeakMap.get
weakMap.get("0")
array[0]
array[0]
object.a
object.a
object[symbol]
object[symbol]