How to install nodejs 4.x

With the development of the Internet, front-end development has become more and more important, and Node.js is one of the important tools for front-end development. It allows developers to use Javascript language for back-end development and can also be used as a build tool. Currently, the latest Node.js version is 14.x, but in some cases, the 4.x version also has certain use value. So, this article will introduce how to install Node.js 4.x version.

Step one: Download the Node.js 4.x installation package

First, we need to download the 4.x version installation package from the Node.js official website. In the download page of the website, you can see multiple versions available, including the latest version 14.x and the older 4.x version. We need to select the operating system corresponding to version 4.x to download the installation package. If it is a Windows system, select Windows Installer; if it is a Mac system, just download the PKG file.

Step 2: Install Node.js 4.x

After completing the download, double-click the installation package and follow the guidance to complete the installation. What you need to pay attention to during the installation process is to check the "Add to PATH" option to use Node.js in the command line. For Windows systems, after the installation is complete, you need to add the Node.js installation directory to the environment variable so that you can use Node.js commands directly on the command line.

Step 3: Verify the installation result

After completing the installation, we need to verify whether Node.js has been successfully installed. Open the command line terminal and enter the following command:

node -v

If the version number is successfully displayed, Node.js has been successfully installed. At the same time, we can also run some simple Javascript scripts to verify:

console.log("Hello, world!");

If "Hello, world!" is output on the command line, the installation is successful.

Summary

The installation of Node.js 4.x version is not much different from the latest version. You only need to download the corresponding installation package from the official website and install it according to the guidance. During the installation process, you need to check the "Add to PATH" option and add the installation directory to the environment variable (Windows system). Finally, you can confirm that the installation was successful by verifying the installation results on the command line.

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