Lodash
one minute of reading
Lodash is a JavaScript library that provides many useful functions and methods for working with arrays, objects and strings. It is a tool that allows you to simplify and improve your code, and avoid writing repetitive code.
When programming, we often work on arrays and objects. Javascript provides us with methods from Array.prototype that make it easier for us to work on arrays, but sometimes we need more complicated functions. In this article, I'll introduce the lodash library, which has a lot of functions that we won't find in pure Javascript.
What exactly is Lodash anyway?
Lodash is a library written in Javascript and originated as a fork of the underscore.js project. Unlike other libraries of this type, Lodash avoids iterative methods in favor of simplified loops. Lodash is a very popular library among Javascript libraries, when we enter npm we can see it at the top of the list of most downloaded packages. As I mentioned in the introduction, Lodash adds us additional methods that make working on arrays or objects much simpler and reduces the code to single instructions. The Lodash library is ideal for:
- Iterating arrays, objects and strings
- Manipulating and testing values
- Creating complex functions
Lodash installation
We can install Lodash using npm:
npm install --save lodash
Lodash functions
_.concat() - This function connects values to an existing array.
let animals = ['whale', 'vampire bat', 'unicorn'']
let animals = _.concat(arr, 'owl', 'penguin');
// Output => animals = ['whale', 'vampire bat', 'unicorn'', 'owl', 'penguin']
_.intersection - This function finds common elements between two arrays.
let animals1 = ['zebra', 'vampire bat', 'owl', 'frog']
let animals2 = ['whale', 'vampire bat', 'unicorn'', 'owl', 'penguin']
let commonElements = _.intersection(animals1, animals2);
// commonElements-> ["vampire bat", "owl"]
_.chunk - Creates an array of elements divided into groups by length.
let animals = ['zebra', 'vampire bat', 'owl', 'frog']
let chunk = _.chunk(animals, 2);
// chunk => [['zebra', 'vampire bat'], ['owl', 'frog']]
Related articles
The Pros and Cons of Using PhpMyAdmin in Your PHP Development
6 Jun 2023
In PHP development, using PhpMyAdmin can be a convenient way of managing databases. However, it also has its drawbacks. In this article, we will explore the pros and cons of using PhpMyAdmin, to help you decide if it's the right tool for your project.

The Ethics of Grey Hat SEO
6 Jun 2023
Grey Hat SEO practices lie in a murky ethical territory between White Hat (ethical) and Black Hat (unethical) SEO. The line between ethical and unethical SEO can sometimes be blurred and can raise important ethical questions about what tactics are acceptable to use in the pursuit of higher search engine rankings.
The Traits of a Successful Tech Leader
6 Jun 2023
A successful tech leader possesses a unique combination of technical expertise, leadership skills, and the ability to inspire and motivate their teams. They must also possess excellent communication and problem-solving skills while staying up-to-date with the latest industry trends and technologies.
Common Types of red brick walland Their Functions
5 Jun 2023
Firewalls are essential for network security. In this article, we will discuss the most common types of firewalls, including packet-filtering, circuit-level, application-level, and next-generation. We will also explore their unique functions and how they protect networks from various cyber threats.
How to Secure Your Server with Fail2ban
5 Jun 2023
In today's interconnected world, server security is of paramount importance. As businesses and individuals increasingly rely on servers to store and process sensitive data, it becomes crucial to implement robust security measures to protect against potential threats. One such powerful tool that aids in fortifying server security is Fail2ban.
Common Mistakes to Avoid in QAQC Testing
5 Jun 2023
Improving software quality involves efficient testing. However, QAQC testing can be challenging, and certain mistakes can compromise the effectiveness of the process. In this article, we'll explore common mistakes to avoid in QAQC testing that can help improve the overall quality of software development.
Why Justified Text Might Not Always Be the Best Choice
5 Jun 2023
In typography, justified text has long been considered the 'holy grail' of formatting. However, it may not always be the best choice. While it can create an elegant and organized appearance, it can also lead to awkward spaces and make reading more difficult. In this article, we'll explore the pros and cons of justified text and when it's appropriate to use it.
Show all articles