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