22 lines
584 B
Markdown
22 lines
584 B
Markdown
---
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title: Initialize array with values
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tags: array
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cover: blog_images/flower-portrait-1.jpg
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firstSeen: 2017-12-17T17:55:51+02:00
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lastUpdated: 2020-10-20T23:02:01+03:00
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---
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Initializes and fills an array with the specified values.
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- Use `Array.from()` to create an array of the desired length, `Array.prototype.fill()` to fill it with the desired values.
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- Omit the last argument, `val`, to use a default value of `0`.
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```js
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const initializeArrayWithValues = (n, val = 0) =>
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Array.from({ length: n }).fill(val);
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```
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```js
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initializeArrayWithValues(5, 2); // [2, 2, 2, 2, 2]
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```
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