Run results for: Array vs Object vs Map vs WeakMap access (123123)

Run details:

User agent: Mozilla/5.0 (Linux; Android 10; K) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/122.0.0.0 Mobile Safari/537.36

Browser: Chrome Mobile 122

Operating system: Android

Device Platform: Mobile

Date tested: 2 years ago

array[0]

1.3M/s

object.a

1.3M/s

Map.get

1.3M/s

WeakMap.get

992K/s

object[symbol]

932K/s

View exact numbers

Test name	Executions per second
✓ array[0]	1,304,016 Ops/sec
object.a	1,303,644 Ops/sec
Map.get	1,264,033 Ops/sec
WeakMap.get	991,640 Ops/sec
object[symbol]	931,890 Ops/sec

Script Preparation code:

var map = new Map([["0",1]]);

var array = [1];

var symbol = Symbol('next');
var object = {["0"]: 1, [symbol]: 1 };
var weakMap = new WeakMap([[object,1]])
var x = 0;

Tests:

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