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Run results for:
Map vs Object (R+W) 1k
Read/Write of Map vs Object (competition use only, please don't use these in the real world).
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<iframe src="https://measurethat.net/Embed?id=524977" width="100%" height="500px"></iframe>
Run details:
User agent:
Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/605.1.15 (KHTML, like Gecko) Version/17.4.1 Safari/605.1.15
Browser:
Safari 17
Operating system:
Mac OS X 10.15.7
Device Platform:
Desktop
Date tested:
one year ago
Test name
Executions per second
Map
4415.9 Ops/sec
Object
3217.0 Ops/sec
Script Preparation code:
var map = new Map(); var obj = {}; var count = 1000; var i = 0, a;
Tests:
Map
for (i = 0; i < count; i++) { map.set((i * 10000).toString(), i); } for (i = 0; i < count; i++) { a = map.get((i * 10000).toString()); }
Object
for (i = 0; i < count; i++) { obj[(i * 10000).toString()] = i; } for (i = 0; i < count; i++) { a = obj[(i * 10000).toString()]; }