How to Remove a null from an Object with Lodash

2 years ago

source link: https://masteringjs.io/tutorials/lodash/remove-null-from-object
Go to the source link to view the article. You can view the picture content, updated content and better typesetting reading experience. If the link is broken, please click the button below to view the snapshot at that time.

How to Remove a null from an Object with Lodash

Jun 8, 2022

To remove a null from an object with lodash, you can use the omitBy() function.

const _ = require('lodash');

const obj = {a: null, b: 'Hello', c: 3, d: undefined};

const result = _.omitBy(obj, v => v === null); // {b: 'Hello', c: 3, d: undefined}

If you want to remove both null and undefined, you can use .isNull or non-strict equality.

const _ = require('lodash');

const obj = {a: null, b: 'Hello', c: 3, d: undefined};

const result = _.omitBy(obj, _.isNull); // {b: 'Hello', c: 3}

const other = _.omitBy(obj, v => v == null); // {b: 'Hello', c: 3}

Using Vanilla JavaScript

You can use vanilla JavaScript to remove nulls from objects using Object.entries() and Array filter(). However, the syntax is a bit messy. Lodash omitBy() is cleaner.

const obj = {a: null, b: 'Hello', c: 3, d: undefined, e: null};

Object.fromEntries(Object.entries(obj).filter(([key, value]) => value !== null)); // { b: "Hello", c: 3, d: undefined }