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Run results for:
Array vs Object vs Map vs WeakMap access (3)
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Run details:
User agent:
Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/124.0.0.0 Safari/537.36
Browser:
Chrome 124
Operating system:
Mac OS X 10.15.7
Device Platform:
Desktop
Date tested:
2 years ago
array[0]
38.0M/s
Map.get
37.6M/s
object.a
37.6M/s
WeakMap.get
33.5M/s
object[symbol]
19.8M/s
View exact numbers
Test name
Executions per second
✓
array[0]
37,951,896 Ops/sec
Map.get
37,595,412 Ops/sec
object.a
37,555,180 Ops/sec
WeakMap.get
33,493,274 Ops/sec
object[symbol]
19,785,958 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]