Noed JS
Node.js is an open-source, cross-platform JavaScript runtime environment that executes JavaScript code
outside of a web browser. It's built on Chrome's V8 JavaScript engine, making it fast and efficient.
Key features of Node.js
-
Server-side JavaScript:
Node.js enables developers to use JavaScript for server-side programming, allowing for a unified
language
across the entire development stack.
-
Asynchronous and Non-blocking:
Node.js utilizes an event-driven, non-blocking I/O model, which makes it suitable for handling multiple
concurrent requests efficiently.
-
Single-threaded:
Despite being single-threaded, Node.js can handle concurrency through its event loop.
-
NPM (Node Package Manager):
Node.js comes with npm, a package manager that provides access to a vast ecosystem of reusable modules
and
libraries.
-
Scalability:
Node.js is well-suited for building scalable and high-performance web applications and APIs.
-
Cross-platform:
Node.js runs on various platforms, including Windows, Linux, and macOS.
- Modules:
Node.js uses modules to structure and reuse code, making it modular and maintainable.
-
Global Object:
In Node.js, the global object is named global, as opposed to the window object used in web browsers.
Node.js is commonly used for building web servers, APIs, real-time applications, and command-line tools.
Express JS
Express.js is a minimal and flexible Node.js web application framework that provides a robust set of
features for web and mobile applications. It simplifies the process of building server-side applications
and APIs by providing a set of tools for handling HTTP requests and responses, routing, middleware, and
more.
Key Features
- Routing:
Handles requests with different HTTP verbs at different URL paths.
- Middleware:
Allows you to add additional request processing at any point within the request handling
pipeline.
- Templating:
Integrates with "view" rendering engines to generate responses by inserting data into
templates.
- Flexibility:
Allows developers to mix and match middleware, choose templating engines, and select
databases.
- Minimalist:
Provides a thin layer of fundamental web application features without obscuring Node.js
features.
- Scalability:
Designed to build scalable and production-ready RESTful APIs.
- Usage:
Used for building web applications, APIs, and mobile applications.
Provides server-side logic for mobile applications.
Can interact with front-end frameworks like React or Angular.
- Benefits:
Simplifies the process of building web applications.
Provides a robust set of features for handling HTTP requests and responses.
Offers flexibility and customization options.
Has a large ecosystem of plugins and extensions.
Widely used and has a strong community support.
Express.js is a popular choice for developers looking for a fast, unopinionated, and minimalist web
framework for Node.js.