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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/605.1.15 (KHTML, like Gecko) Version/18.0.1 Safari/605.1.15
Browser:
Safari 18
Operating system:
Mac OS X 10.15.7
Device Platform:
Desktop
Date tested:
one year ago
WeakMap.get
18.5M/s
Map.get
17.1M/s
array[0]
16.5M/s
object.a
16.0M/s
object[symbol]
8.3M/s
View exact numbers
Test name
Executions per second
✓
WeakMap.get
18,495,880 Ops/sec
Map.get
17,140,858 Ops/sec
array[0]
16,499,504 Ops/sec
object.a
15,983,611 Ops/sec
object[symbol]
8,287,337 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]