Most Node functions have promise equivalents now, so it's a good idea to convert the callback functions used here to their promise-based equivalents and compare the syntax. If you are using certain versions of Node functions, you use callbacks, which were designed before promises existed. For example, if you are reading a file on the file system, you will use an asynchronous function. This is the most important thing to remember about Node. Therefore, everything that would normally block the thread is instead executed in the background using promises. Asynchronous ProgrammingĬhances are good that you are familiar with asynchronous programming it is, after all, the 'A' in AJAX. To start using Node.js, you must first understand the differences between Node.js and traditional server-side scripting environments like PHP, Python, or Ruby.

In this article, I will teach you some of the basics of Node.js and explain why it has become so popular.

Event-driven programming can be overwhelming for beginners, which can make Node.js difficult to get started with.

Node js tutorial for beginners