25 lines
703 B
Markdown
25 lines
703 B
Markdown
---
|
|
title: lowercaseKeys
|
|
tags: object,intermediate
|
|
firstSeen: 2017-12-29T13:28:18+02:00
|
|
lastUpdated: 2020-10-20T11:21:07+03:00
|
|
---
|
|
|
|
Creates a new object from the specified object, where all the keys are in lowercase.
|
|
|
|
- Use `Object.keys()` and `Array.prototype.reduce()` to create a new object from the specified object.
|
|
- Convert each key in the original object to lowercase, using `String.prototype.toLowerCase()`.
|
|
|
|
```js
|
|
const lowercaseKeys = obj =>
|
|
Object.keys(obj).reduce((acc, key) => {
|
|
acc[key.toLowerCase()] = obj[key];
|
|
return acc;
|
|
}, {});
|
|
```
|
|
|
|
```js
|
|
const myObj = { Name: 'Adam', sUrnAME: 'Smith' };
|
|
const myObjLower = lowercaseKeys(myObj); // {name: 'Adam', surname: 'Smith'};
|
|
```
|