25 lines
719 B
Markdown
25 lines
719 B
Markdown
---
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title: Split into chunks
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tags: array
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cover: filter-coffee-pot
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firstSeen: 2017-12-17T16:41:31+02:00
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lastUpdated: 2020-11-03T21:35:12+02:00
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---
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Chunks an array into smaller arrays of a specified size.
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- Use `Array.from()` to create a new array, that fits the number of chunks that will be produced.
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- Use `Array.prototype.slice()` to map each element of the new array to a chunk the length of `size`.
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- If the original array can't be split evenly, the final chunk will contain the remaining elements.
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```js
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const chunk = (arr, size) =>
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Array.from({ length: Math.ceil(arr.length / size) }, (v, i) =>
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arr.slice(i * size, i * size + size)
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);
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```
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```js
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chunk([1, 2, 3, 4, 5], 2); // [[1, 2], [3, 4], [5]]
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```
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