What is NodeJS Runtime?
One of the key features of Node.js is its non-blocking, event-driven architecture, which makes it lightweight and efficient. This allows it to handle many concurrent connections with high performance.
To create a simple “Hello, World!” application in Node.js, you can create a file called
index.js with the following code:
To run this code, open your terminal or command prompt and navigate to the directory where you saved
index.js, then run the
node command followed by the file name:
You should see the output “Hello, World!” printed to the console.
In addition to running simple scripts like this, Node.js also provides a range of powerful APIs for building networked applications. For example, you can use the
http module to create a simple web server that listens for requests and sends responses.
Node.js also has a large ecosystem of third-party libraries, called “packages,” that can be installed using the Node Package Manager (NPM). These packages can provide useful functionality for your applications, such as handling HTTP requests, reading and writing to the file system, and interacting with databases.
Node.js has become a popular choice for building server-side applications due to its ability to handle many concurrent connections with high performance. Its non-blocking, event-driven architecture makes it lightweight and efficient, which is particularly useful for building scalable, real-time applications.
Another reason that Node.js is easy to learn is that it has a large and active community of developers who are constantly creating new packages and tools to make it easier to build applications with Node.js. These packages, which are managed through the Node Package Manager (NPM), can provide useful functionality for your applications, such as handling HTTP requests, reading and writing to the file system, and interacting with databases.
In addition to its large community and the availability of packages, Node.js also has excellent documentation and a wide range of tutorials and resources available online. This makes it easy to find the information you need to get started with Node.js and learn how to build applications with it.