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Run results for:
WeakMap vs property access vs array[0] vs symbol access
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Run details:
User agent:
Mozilla/5.0 (Linux; Android 10; K) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/129.0.6668.100 Mobile Safari/537.36
Browser:
Chrome Mobile 129
Operating system:
Android
Device Platform:
Mobile
Date tested:
one year ago
Test name
Executions per second
WeakMap.get
16095933.0 Ops/sec
object.a
674580288.0 Ops/sec
object[symbol]
12219536.0 Ops/sec
array[0]
673563072.0 Ops/sec
Script Preparation code:
var weakMap = new WeakMap() var symbol = Symbol('next'); var object = { a: 1, [symbol]: 1 }; weakMap.set(object, 1); var array = [1];
Tests:
WeakMap.get
weakMap.get(weakMap)
object.a
object.a
object[symbol]
object[symbol]
array[0]
array[0]