How to learn nodejs from scratch

With the development of Internet technology, more and more developers are beginning to pay attention to nodejs, a JavaScript runtime environment based on the V8 engine created by Ryan Dahl. It aims to provide a platform for writing efficient and scalable network applications. platform. However, many people have not been exposed to server-side development and do not understand how to use this language to build server-side applications. Therefore, this article will introduce how to learn nodejs from scratch.

1. Basic knowledge

Before you start learning nodejs, you need to master the following basic knowledge:

1. JavaScript Basics

Node. The bottom layer of js is a JavaScript running environment based on the V8 engine, so mastering JavaScript is crucial. Be familiar with JavaScript core syntax, and master certain DOM operations and event mechanisms, as well as commonly used design patterns and asynchronous programming ideas.

2. HTML and CSS Basics

Before learning Node.js, you need to be familiar with HTML and CSS, because this is the basis of web development, it is in Node.js Render your web page on the server.

3. HTTP protocol and basic network knowledge

When learning Node.js, you should understand the HTTP protocol and basic network knowledge. Node.js is an optimized event-driven network framework. Understanding the functions of HTTP requests and request headers as well as basic network principles will help you better master Node.js.

2. Environment setup

1. Install Node.js

Before you start writing Node.js applications, you need to install the Node.js environment first , you can go to the official website to download.

2. Install a code editor

In order to write code better, you need to use a code editor. The more common ones include VS Code, Atom, Sublime Text, etc. Everyone has different usage habits and needs, and you can choose the software that best suits you to write code.

3. Learning Resources

After mastering the basic knowledge and environment construction, you can start to learn Node.js related knowledge. The following are several learning resources:

1. Official Documentation

Node.js official documentation is one of the best introductory materials, covering all aspects of Node.js , covering everything from basic grammar to advanced concepts.

2. Node.js Chinese website

Node.js Chinese website provides very good learning resources, including the "Node.js Full Stack Development" series of tutorials and some commonly used Framework API documentation, etc.

3. Basic Tutorial

One of the best ways to learn Node.js is to write some basic applications. For example, you can try a simple web server based on HTTP and file system to gain more practical experience.

4. Project Practice

Node.js is an application framework widely used in Web development and is widely used in actual projects. Here are a few examples of Node.js applications:

1. Express-based Web Server

Express is a popular Node.js-based web framework. You can use Express to build a simple web server.

2. Real-time chat application based on socket.io

socket.io is a WebSocket library that provides a simple API for real-time communication. You can use socket.io to build a real-time chat application.

3. Blog system based on Node.js

The blog system is a traditional Web application. It uses Node.js and express to build a blog system and complete some similar users After the functions of login, article commenting, etc. are built, you will master the application of multiple technologies in real environments.

5. Summary

If you are a novice, you may have mastered all the basic knowledge required to learn Node.js from scratch, and understand the environment construction and learning resources. and several interesting instances.

In the process of learning, don’t rush for success, learn and practice step by step, master the basic knowledge and write more code, which will allow you to go further on the road of nodejs.

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