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Run results for:
Set has vs object key vs map has
performance comparison of ways to find if an array contains a value
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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/142.0.0.0 YaBrowser/25.12.0.0 Safari/537.36
Browser:
Yandex Browser 25
Operating system:
Mac OS X 10.15.7
Device Platform:
Desktop
Date tested:
2 months ago
Test name
Executions per second
Includes
103588416.0 Ops/sec
Object[key]
91412416.0 Ops/sec
Set.has
136671040.0 Ops/sec
Map.has
136303504.0 Ops/sec
Script Preparation code:
var obj = (new Array(1000)).fill(null).reduce((prev, newVal) => {prev[Math.random() + ''] = Math.random() + ''; return prev; }, { sausage: 'tst' }); var array = Object.keys(obj); var set = new Set(array); var map = new Map(Object.entries(obj));
Tests:
Includes
array.includes('sausage')
Object[key]
obj['sausage']
Set.has
set.has('sausage')
Map.has
map.has('sausage')