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Run results for:
Map has vs Object hasOwnProperty
Comparing performance of: Map lookup vs Obj lookup
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<iframe src="https://measurethat.net/Embed?id=615247" width="100%" height="500px"></iframe>
Run details:
User agent:
Mozilla/5.0 (X11; Linux x86_64; rv:141.0) Gecko/20100101 Firefox/141.0
Browser:
Firefox 141
Operating system:
Linux
Device Platform:
Desktop
Date tested:
8 months ago
Test name
Executions per second
Map lookup
6657.3 Ops/sec
Obj lookup
7238.8 Ops/sec
Script Preparation code:
var map = new Map(); var obj = {}; map.set('a', 5); obj['a'] = 5; var i = 0, count = 100000;
Tests:
Map lookup
for (i = 0; i < count; i++) { map.has('a'); }
Obj lookup
for (i = 0; i < count; i++) { obj.hasOwnProperty('a'); }