Express js

What is express js ?

Express.js is a Node.js web application framework that is free and open-source. It is used to rapidly and simply design web apps. Web applications are applications that could be launched using a web browser. Because Express.js simply requires javascript, programmers and developers may quickly and easily create web apps and APIs.

Express.js is a Node.js framework, which implies that the majority of the code is already prepared and ready for programmers to use. Express.js may be used to create single-page, multi-page, or hybrid web applications. Express.js is a lightweight server-side framework that aids in the organization of web applications into a more ordered MVC architecture.

Express.js’ JavaScript library aids programmers in creating efficient and quick online applications. Express.js extends the capabilities of node.js. In fact, if you don’t utilize Express.js, creating an efficient API will need a lot of sophisticated programming. It has made node.js development a breeze and added a slew of new capabilities.

Why should you use Express.js?

Express.js supports JavaScript, a widely known scripting language that is simple to learn and extensively maintained. As a result, if you’re already familiar with JavaScript, developing with Express.js will be simple. Express.js makes it simple to create many types of web apps in a short amount of time. For client requests, Express.js provides a basic routing system. It also includes middleware that is in charge of making judgments in order to offer the best possible replies to customer questions. With the aid of the Event Loop in Node.js, all of the executions are carried out extremely quickly, avoiding any inefficiencies. The most popular aspects valued by web application developers are Node.js’ tremendous performance and Express.js’ simplicity of scripting. You may use Express.js to create websites, web applications, and even mobile apps because it is written in Javascript.

Features of Express.js

1. Faster Server side development

Express.js provides many commonly used features of Node.js in the form of functions that can be readily used anywhere in the program. This removes the need to code for several hours and thus saves time.

2. Middleware

Middleware is a part of the program that has access to the database, client request, and the other middlewares. It is mainly responsible for the systematic organization of different functions of Express.js.

3. Routing

ExpressJS provides a highly advanced routing mechanism which helps to preserve the state of the webpage with the help of their URLs.

4. Templating

ExpressJS provides templating engines that allow the developers to build dynamic content on the web pages by building HTML templates on the server-side.

5. Debugging

Debugging is crucial for the successful development of web applications. ExpressJS makes debugging easier by providing a debugging mechanism that has the ability to pinpoint the exact part of the web application which has bugs.