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Run results for:
Delete entries from object vs from map
Deleting entries from an object vs from a Map
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<iframe src="https://measurethat.net/Embed?id=602847" width="100%" height="500px"></iframe>
Run details:
User agent:
Mozilla/5.0 (X11; Ubuntu; Linux x86_64; rv:136.0) Gecko/20100101 Firefox/136.0
Browser:
Firefox 136
Operating system:
Ubuntu
Device Platform:
Desktop
Date tested:
one year ago
Test name
Executions per second
Object
1712777.5 Ops/sec
Map
1302606.0 Ops/sec
Tests:
Object
const keys = [ 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, ]; const data = {}; keys.forEach(key => { data[key] = key; }); delete data['1']; delete data['2']; delete data['3']; delete data['4'];
Map
const keys = [ 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, ]; const mapData = new Map(); keys.forEach(key => { mapData.set(key, key); }); mapData.delete('1'); mapData.delete('2'); mapData.delete('3'); mapData.delete('4');