22 lines
490 B
Markdown
22 lines
490 B
Markdown
---
|
|
title: Cast to array
|
|
tags: type,array
|
|
expertise: beginner
|
|
cover: blog_images/man-red-sunset.jpg
|
|
firstSeen: 2018-01-23T20:54:12+02:00
|
|
lastUpdated: 2020-09-15T16:28:04+03:00
|
|
---
|
|
|
|
Casts the provided value as an array if it's not one.
|
|
|
|
- Use `Array.isArray()` to determine if `val` is an array and return it as-is or encapsulated in an array accordingly.
|
|
|
|
```js
|
|
const castArray = val => (Array.isArray(val) ? val : [val]);
|
|
```
|
|
|
|
```js
|
|
castArray('foo'); // ['foo']
|
|
castArray([1]); // [1]
|
|
```
|