27 lines
634 B
Markdown
27 lines
634 B
Markdown
---
|
|
title: Pluck values from array of objects
|
|
tags: array,object
|
|
expertise: beginner
|
|
cover: blog_images/birds.jpg
|
|
firstSeen: 2020-10-18T01:19:37+03:00
|
|
lastUpdated: 2020-10-22T20:24:04+03:00
|
|
---
|
|
|
|
Converts an array of objects into an array of values corresponding to the specified `key`.
|
|
|
|
- Use `Array.prototype.map()` to map the array of objects to the value of `key` for each one.
|
|
|
|
```js
|
|
const pluck = (arr, key) => arr.map(i => i[key]);
|
|
```
|
|
|
|
```js
|
|
const simpsons = [
|
|
{ name: 'lisa', age: 8 },
|
|
{ name: 'homer', age: 36 },
|
|
{ name: 'marge', age: 34 },
|
|
{ name: 'bart', age: 10 }
|
|
];
|
|
pluck(simpsons, 'age'); // [8, 36, 34, 10]
|
|
```
|