This is a very common question that can be answered in many ways. In this post, I will share a tip that I think is clean and elegant.

Memoization is a caching technique that consists in saving the result of an expensive function and returning it if the same inputs are provided again. In short, it’s like having a “no smoking” sign inside a restaurant instead of going to each customer and asking them not to light their cigarettes.

During the development of an application we often need to simulate the response to an API call without having a real endpoint available.

Npm is an excellent package manager for JavaScript and for sure it’s the first choice when it comes to managing packages and dependencies, but sometimes we just need to install a library from GitHub.

The latest JS standard while I’m writing is Ecmascript 2023, shortly ES14. It includes several functions to manage arrays. Let’s see them.

Npm packages are extremely useful for creating reusable pieces of code or for sharing your work with other developers.

I started writing this series of posts about new javascript features during the 2020 quarantine. Now it’s 2021 and there are still severe restrictions in Italy. This list is undoubtedly the most strict for you. So let’s start with the features of ES2021: