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Run results for:
Javascript unique string array
Create a unique array of strings from a possible non-unique array.
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<iframe src="https://measurethat.net/Embed?id=590068" width="100%" height="500px"></iframe>
Run details:
User agent:
Mozilla/5.0 (X11; Ubuntu; Linux x86_64; rv:134.0) Gecko/20100101 Firefox/134.0
Browser:
Firefox 134
Operating system:
Ubuntu
Device Platform:
Desktop
Date tested:
one year ago
Benchmark engine:
Benchmark.js
Using an object
4.4M/s
Using a Set
1.5M/s
View exact numbers
Test name
Executions per second
✓
Using an object
4,410,938 Ops/sec
Using a Set
1,513,433 Ops/sec
Tests:
Using an object
const nonUnique = ['one', 'two', 'three', 'three', 'four', 'four', 'five', 'six', 'seven', 'eight', 'nine']; const unique = Object.keys(nonUnique.reduce((acc, item) => { if (!acc[item]) { acc[item] = true }; return acc; }, {}));
Using a Set
const nonUnique = ['one', 'two', 'three', 'three', 'four', 'four', 'five', 'six', 'seven', 'eight', 'nine']; const unique = Array.from(new Set(nonUnique));