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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 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/120.0.0.0 Safari/537.36
Browser:
Chrome 120
Operating system:
Windows
Device Platform:
Desktop
Date tested:
2 years ago
object.a
7.2M/s
Map.get
6.5M/s
WeakMap.get
6.3M/s
object[symbol]
3.2M/s
array[0]
2.8M/s
View exact numbers
Test name
Executions per second
✓
object.a
7,248,442 Ops/sec
Map.get
6,495,276 Ops/sec
WeakMap.get
6,288,601 Ops/sec
object[symbol]
3,180,297 Ops/sec
array[0]
2,802,335 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]