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Run results for:
Object vs Map delete and lookup
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Embed
Embed Benchmark Result
<iframe src="https://measurethat.net/Embed?id=508705" width="100%" height="500px"></iframe>
Run details:
User agent:
Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:123.0) Gecko/20100101 Firefox/123.0
Browser:
Firefox 123
Operating system:
Windows
Device Platform:
Desktop
Date tested:
2 years ago
Test name
Executions per second
Map lookup
381.6 Ops/sec
Object lookup
562.2 Ops/sec
Map delete
1447.9 Ops/sec
Object delete
1460.7 Ops/sec
Script Preparation code:
window.map = new Map(); window.obj = {}; for (let i = 0; i < 10000; ++i) { window.map.set(i, i); window.obj[i] = i; } window.result = undefined;
Tests:
Map lookup
for (let i = 0; i < 10000; ++i) { window.result = window.map.get(i) }
Object lookup
for (let i = 0; i < 10000; ++i) { window.result = window.obj[i]; }
Map delete
const mapCopy = new Map(window.map); for (let i = 0; i < 10000; ++i) { mapCopy.delete(i); }
Object delete
const objCopy = { ... window.obj }; for (let i = 0; i < 10000; ++i) { delete objCopy[i]; }