Nodejs green version build environment

With the increasing popularity and use of Node.js, many people have questions about how to build a Node.js environment. This article will share how to use the Node.js green version to build an environment.

What is Node.js green version?

Before officially introducing the Node.js green version, let’s first understand what the “green version” is. Usually refers to software that can be used directly without installation, also called "portable version" or "green software".

Node.js green version is a version of Node.js that does not require installation. You can run Node.js programs directly without installation.

Two ways to build a Node.js environment

When building a Node.js development environment, there are usually two ways, one is the installation version and the other is the green version.

The former requires installation, which may involve operations such as setting environment variables. The installation process is more complicated, but once the installation is completed, it is usually more convenient to use.

The latter does not require installation, just download the compressed package and decompress it. It is suitable for developers who need to frequently switch Node.js versions or do not want to affect the existing environment of the computer.

The following will introduce in detail how to use the Node.js green version to build an environment.

Preparation

First you need to visit the official website of Node.js (http://nodejs.org/), find the Windows Installer download area on the download page, and select the option that suits your computer operation System version to download.

Unzip Node.js Green Version

After the download is complete, unzip the downloaded file to the appropriate directory. Find an executable file named node.exe in the directory where the decompression is completed.

If you want to use Node.js through the command line, you also need to add the directory where the file is located to the system's environment variables. The specific steps are as follows:

1. Right-click the "My Computer" icon and select "Properties".
2. Select "Advanced System Settings".
3. In the pop-up dialog box, select "Environment Variables".
4. In the environment variables dialog box, find the "Path" variable in the system variables and click "Edit".
5. Click "New" in the Edit System Variables dialog box and enter the path to the directory where the Node.js executable file is located.

Run Node.js

After completing the above steps, you can run Node.js in the command line. Open the command line window and enter the "node -v" command to check the current Node.js version. If the version number is returned, the Node.js environment is set up.

Using the Node.js green version, you can also call Node.js by writing JavaScript scripts, like this:

// 示例程序
console.log('Hello, World!');

Save the script into a plain text file, such as hello.js, and then Execute "node hello.js" on the command line, and you can see the output text on the command line.

Conclusion

This article introduces the basic steps of using the Node.js green version to build an environment. The green version can simplify the use process of Node.js, and also facilitates multi-version switching and different applications. Used for transfer between computers.

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