30-seconds-of-code
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A collection of useful JavaScript snippets.
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Markdown
### similarity
Returns an array of elements that appear in both arrays.
Use `Array.filter()` to remove values that are not part of `values`, determined using `Array.includes()`.
```js
const similarity = (arr, values) => arr.filter(v => values.includes(v));
```
```js
similarity([1, 2, 3], [1, 2, 4]); // [1,2]
```