21 lines
448 B
Markdown
21 lines
448 B
Markdown
---
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title: Unique values in array
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tags: array
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expertise: beginner
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firstSeen: 2018-01-17T19:02:49+02:00
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lastUpdated: 2020-10-22T20:24:44+03:00
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---
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Finds all unique values in an array.
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- Create a `Set` from the given array to discard duplicated values.
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- Use the spread operator (`...`) to convert it back to an array.
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```js
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const uniqueElements = arr => [...new Set(arr)];
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```
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```js
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uniqueElements([1, 2, 2, 3, 4, 4, 5]); // [1, 2, 3, 4, 5]
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```
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