JavaScript

When we take our first steps into the wonderful world of programming, we get to see for ourselves what it does for millions of people. It’s thanks to programming that the lives of so many are made easier, just by pressing a few keys on their devices (This is…

An in-depth guide to this fantastic functionality — In this article, I want to chat about elements of scalable event-driven applications available to developers with the Nest.js framework. I will demonstrate how easy it is to get going with a modern framework for building backend Node.js applications. Agenda What is Nest.js? How Does Nest.js Help Build Highly-Scalable Apps? Demo App and…

Angular 15 has been released with a ton of juicy new features but one thing I found people are complaining about, that there are some files are missing now when you use ng new or npm init @angular@latest while it’s for a good reason — to make new project simple…

Sparse Arrays in JavaScript — Introduction If you have come across the use case of iterating n number of times in JavaScript, chances are, you might have tried to implement the solution below (especially in react, when you need to render a JSX element n number of times). Array(5).map(() => console.log("hello")) If you think the above…

1. Why the output of the following code is so strange 🤔? console.log(null > 0); // false console.log(null === 0); // false console.log(null >= 0); // true Ans: Generally, It’s expected that if the output of null > 0 and null === 0 is false then the output of null >= 0 must be false. After spending a little time on this…

I will show you save images in cache. We will use this library for save image: react-native-fs. To start using file stream, first import react-native-fs: import RNFS from 'react-native-fs'; Then we assign the path as a variable: let CacheDir = RNFS.CachesDirectoryPath + '/'; Now we can use filestream to save…

I wish I had known about them sooner — 1.# Open a package’s documentation page My friends, it would have saved me a lot of time if I had known this trick earlier. In the past, when I wanted to query the usage documentation of lodash, I always searched for its address through google. In fact, npm can help you achieve this goal quickly. You…

_Getting started with AWS _What is DNS? The domain name system (DNS) is a naming database in which the various domain names are located and are translated into their respective IP (Internet Protocol) addresses. The domain name system maps the name people use to locate a website to the IP address that a computer uses to locate…