What is Node.js?
What is Node.js?
Node.js is an open-source runtime environment. It is used to run JavaScript on the server side. Node.js is based on the V8 JavaScript engine and is used to run JavaScript code, which normally runs in the Google Chrome browser, on the server side.
Node.js has a single-threaded, event-driven architecture. Thanks to this, it can efficiently process multiple user requests at the same time. Node.js adopts an asynchronous and event-driven programming approach. This allows process blocks to run without blocking each other, thus providing a suitable platform for developing high-performance and scalable applications.
Some of the basic features of Node.js are:
- High performance: Thanks to its event-driven and asynchronous structure, Node.js is ideal for developing high-performance applications. Process blocks do not block each other, and input/output operations can be performed simultaneously.
- Operating system independence: Node.js can run on different operating systems. This allows developers to run their applications seamlessly on multiple platforms.
- Wide module library: Node.js comes with a vast module library ecosystem called NPM (Node Package Manager). These modules can be used to meet different needs and speed up the development process.
- Combination of JavaScript on client and server side: Node.js allows the use of JavaScript both on the server side and on the client side. This facilitates the development of full-stack JavaScript applications and code sharing between the server and client side.
Node.js is used in many different fields such as web applications, APIs, microservices, data streaming applications, and real-time applications. It can also perform various tasks such as database operations, file operations, and network operations.
How to Install Node.js?
- Go to the official Node.js website: https://nodejs.org/
- On the download page, select the LTS (Long-Term Support) version suitable for your operating system. The LTS version provides greater stability and long-term support.
- After the download is complete, run the installation file.
- Follow the installation wizard and configure the installation settings. It is generally recommended to use the default settings.
- When the installation is complete, Node.js and npm (Node Package Manager) will have been successfully installed.
- To verify that Node.js is installed correctly and added to the PATH variable, open a command prompt (Command Prompt, Terminal, PowerShell, etc.) and run the following commands:
- node --version
- npm --version
- Both commands should display their version numbers.


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