What does nodejs do?

Node.js is a JavaScript running environment based on the chrome V8 engine. It can run JavaScript code on the server side, and developers can use it to handle daily tasks such as file uploads, database management, interacting with other APIs, and more.

The creator of Node.js is Ryan Dahl. He released Node.js version 0.1.0 in 2009. Prior to its release, web applications could only use JavaScript in the browser, and the release of node.js sparked interest from developers around the world who were keen on the new technology.

Node.js is popular because developers can write all web components using JavaScript and code can be shared between the front-end and back-end. According to traditional web application development, when sharing code between the front end and the back end, different programming languages ​​need to be used, and there are different language rules and libraries between different languages, which will increase the code complexity and difficulty. With the many excellent features of Node.js, developers can easily share code between the front and back ends using a single language, greatly simplifying the architecture of the entire code base.

In addition to code sharing, Node.js has many great features. The main advantage of Node.js is its high scalability. Node.js has a single-threaded, non-blocking I/O model, which means it can easily handle large numbers of concurrent connections without taking up too much system memory. This is one of the reasons why Node.js is widely used, it can easily handle high load applications with thousands of concurrent users.

Node.js also supports many popular JavaScript frameworks and libraries, such as React, Angular, Vue, and more. Since these frameworks and libraries are written based on JavaScript, Node.js can easily work with them, which greatly improves the speed and efficiency of application development while ensuring the quality and effect of the application.

In short, Node.js is a very powerful tool, especially for web application developers. It allows developers to easily write high-quality, efficient web applications and can easily handle high-traffic requests. As this technology continues to evolve, it will continue to become one of the top choices for web application developers.

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