What is Node.js ? Node.js is a powerful open-source JavaScript runtime environment built on Chrome’s V8 JavaScript engine. It allows developers to run JavaScript on the server-side, outside of a web browser. Node.js is asynchronous, event-driven, and non-blocking, which makes it a great choice for building scalable network applications. In Node.js, asynchronous programming is achieved through…
What are new ES6 features ? Here’s a summary of key features introduced in ES6 (ECMAScript 2015) that significantly enhanced JavaScript development: 1. Classes: Syntactic sugar for creating object blueprints with inheritance and encapsulation. 2. Arrow Functions: Concise syntax for writing functions, often used in callbacks and higher-order functions. 3. Let and Const: 4. Template Literals:…
What is TypeScript and how does it differ from JavaScript ? Here’s a breakdown of TypeScript and its key differences from JavaScript: TypeScript: Key Differences from JavaScript: What are enums ? In TypeScript, enums are a way to define a set of named constants. They allow you to create a collection of related values that can be assigned…
Any application that we develop cannot just sit on our local machines and has to be deployed somewhere for others to access it, and cloud seems like an ideal and cost effective choice to do that. So, in this article we will take an example of the most popular cloud service provider, that is, AWS…
In this article, we will learn about websockets, what is it, how do we use it and much more. We will also create a NodeJS application demonstrating how to work with websockets and also build another NodeJS application around one the most talked about use case of websockets, a chat application. Also checkout how to…
In this article we will learn how can we build a NodeJS and express application using TypeScript, which is being treated as a JavaScript replacement and many NodeJS applications have already started shifting their code from JavaScript to TypeScript. So its just a matter of time for TypeScript to become the de facto standard for…
In this article we will learn how to run NodeJS applications on docker. We will take two examples of node applications, one a simple node app returning just ‘Hello from docker!!’ message as response, and another a full fledged node app with MongoDB that performs basic user registration, login and authentication. Checkout full source code…
In this article we will learn how we can auto generate OpenAPI Specifications using Swagger for RESTful APIs which helps us to describe, consume and visualize the APIs. With the help of swagger we will learn to autogenerate API documentation for REST APIs we built for CRUD operations. Checkout full source code for this implementation…
In this article we will learn how to implement user authentication in NodeJS using passport.js which is a authentication middleware and is extremely flexible and modular. In this tutorial we will create a simple NodeJS backend using express with just registration and login functionality to understand the use of passport.js in authentication. In previous article…
In this article we will learn how to implement CRUD in NodeJS using MongoDB as database. We will also learn how to build REST APIs for each CRUD operation and to use rest client in visual studio code to test those APIs. We will also learn to interact with mongo database with the help of…