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

Run details:

User agent: Mozilla/5.0 (iPhone; CPU iPhone OS 16_5_1 like Mac OS X) AppleWebKit/605.1.15 (KHTML, like Gecko) Version/16.5.2 Mobile/15E148 Safari/604.1

Browser: Mobile Safari 16

Operating system: iOS 16.5.1

Device Platform: Mobile

Date tested: one year ago

Test name	Executions per second
Map.get	29403390.0 Ops/sec
WeakMap.get	29208814.0 Ops/sec
array[0]	28639130.0 Ops/sec
object.a	26805390.0 Ops/sec
object[symbol]	15462995.0 Ops/sec
object[“0”]	25824858.0 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]
object[“0”]
object["0"]

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

Map.get

WeakMap.get

array[0]

object.a

object[symbol]

object[“0”]