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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/17.4 Safari/605.1.15
Browser:
Safari 17
Operating system:
Mac OS X 10.15.7
Device Platform:
Desktop
Date tested:
2 years ago
WeakMap.get
33.4M/s
array[0]
31.8M/s
Map.get
31.7M/s
object.a
31.2M/s
object[symbol]
18.6M/s
View exact numbers
Test name
Executions per second
✓
WeakMap.get
33,395,104 Ops/sec
array[0]
31,773,222 Ops/sec
Map.get
31,658,306 Ops/sec
object.a
31,158,740 Ops/sec
object[symbol]
18,578,210 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]