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Update pluck.md

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Isabelle Viktoria Maciohsek
2020-10-21 17:08:45 +03:00
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snippets/pluck.md
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@ -3,13 +3,12 @@ title: pluck
tags: array,object,beginner tags: array,object,beginner
--- ---
Converts and array of objects into an array of values by returning only the value of the specified key. Converts and array of objects into an array of values corresponding to the specified `key`.
- Use `Array.prototype.map()` to map the array of objects. - Use `Array.prototype.map()` to map the array of objects to the value of `key` for each one.
- Use array-like notation to dynamically return the value, by key, from each object.
```js ```js
const pluck = (arr, key) => arr.map((i) => i[key]); const pluck = (arr, key) => arr.map(i => i[key]);
``` ```
```js ```js
@ -19,5 +18,5 @@ const simpsons = [
{ name: 'marge', age: 34 }, { name: 'marge', age: 34 },
{ name: 'bart', age: 10 }, { name: 'bart', age: 10 },
]; ];
pluck(simpsons, 'age'); // '[8, 36, 34, 10]' pluck(simpsons, 'age'); // [8, 36, 34, 10]
``` ```