nodejs 5.0 installation tutorial

Nodejs is a fast and efficient JavaScript runtime tool that allows developers to run JavaScript programs on the server side. It is deeply loved by developers. Nodejs provides a series of event-driven, asynchronous, non-blocking APIs that can easily build high-performance, scalable network applications. This article will introduce you to the installation tutorial of Nodejs 5.0.

1. Download Nodejs 5.0

First you need to download the Nodejs installation package from the Nodejs official website. Official website address: https://nodejs.org. After finding the download button, you can select the corresponding operating system version to download.

2. Install Nodejs

After the download is complete, install it. On Windows systems, you can double-click the downloaded installation package and follow the prompts to install it. On Linux or Mac systems, you can use the following command to install:

tar -zxvf node-v5.0.0.tar.gz
cd node-v5.0.0
./configure
make
sudo make install

3. Check the Nodejs version

After the installation is complete, you can enter the following command in the terminal or command line To check the version of Nodejs:

node -v

If the version number of Nodejs is output, it means that Nodejs has been installed successfully.

4. Install a package management tool

Although Nodejs already includes the npm (Nodejs Package Manager) package management tool, the version of npm is relatively low. Therefore we can manually install the latest version of npm.

Enter the following command in the terminal or command line to install:

sudo npm install -g n
sudo n stable
sudo npm install -g npm

where n is an npm module used to manage the Nodejs version. The above command first installs the n module, then uses the n module to install the latest version of Nodejs, and finally upgrades npm.

5. Install global modules

When writing programs using Nodejs, you usually need to use some global modules. After installing Nodejs, you can use the following command to install the global module:

sudo npm install -g 模块名

For example, if you need to install the http-server module that creates a static server, you can use the following command to install it:

sudo npm install -g http-server

6. Install development environment

Nodejs also supports debugging in the development environment. In order to facilitate development, we need to install some related tools.

• Express framework: You can quickly build web applications.
• Nodemon: Monitor code changes and automatically restart the application.

You can use the following command to install:

sudo npm install -g express
sudo npm install -g nodemon

7. Test Nodejs

After the installation is complete, you can use the following code to test, create A simple server:

// 引入http模块
var http = require('http');

// 创建http服务器
var server = http.createServer(function(req, res) {
  res.writeHead(200, {'Content-Type': 'text/plain'});
  res.end('Hello Nodejs
');
});

// 监听端口号为3000
server.listen(3000);

console.log('Server running at http://localhost:3000/');

In the command line or terminal, run the following command:

node app.js

Open the browser and visit http://localhost:3000/, you should see "Hello Nodejs" and other words. At this point, the installation and basic configuration of Nodejs have been completed.

Summary

Nodejs is a very powerful JavaScript runtime tool that can help developers quickly build high-performance, scalable network applications. Through the introduction of this article, readers should have mastered the installation and configuration methods of Nodejs 5.0, and also learned about some commonly used Nodejs global modules and development tools. In subsequent development, readers can install corresponding modules and tools according to their needs to improve development efficiency and programming experience.

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