How to install nodejs on computer

With the rapid development of Internet technology, the emergence of Node.js provides a better solution for JavaScript back-end development and has become the first choice of many developers.

If you are learning Node.js, you need to install Node.js to conduct related learning and experiments. So, how to install Node.js on your computer? I will introduce it to you in detail below.

1. Download the Node.js installation package

First, you need to download the Node.js installation package from the Node.js official website (https://nodejs.org/en/). The latest Node.js version will be displayed on the download homepage. If you want to download an older version of Node.js, you can click the "Previous Releases" link at the bottom of the page and select the required version to download.

Generally speaking, we recommend downloading the stable version. The formats of the installation package include Windows, macOS and Linux. You can choose to download according to your own computer system.

2. Install Node.js

After the download is completed, double-click the downloaded Node.js installation package to start the installation. If you are using a Windows system, you need to select the appropriate installation path and click Next all the way.

After the installation is completed, you can use Windows PowerShell or cmd command line under Windows system. You can use terminal under Mac OS and Linux. Please enter node -v. If the version number of Node.js is displayed, it means Successful installation.

3. Using Node.js

After successful installation, we can start programming with Node.js. At this point, open a terminal or command line and enter node to enter the interactive command line interface of Node.js. You can enter simple JavaScript commands to test the operation effect.

If you need to run a .js file, you can use node filename.js to execute the file on the command line.

In addition, if you need to install the Node.js module, just use the command npm install. npm is the package management tool for Node.js, which can easily search and install the required modules.

4. Frequently Asked Questions

1. What should I do if there is an error when installing Node.js?

If there is a problem during the installation of Node.js, please ensure that your computer system can run the downloaded version of Node.js. If the problem still cannot be solved, try re-downloading the Node.js installation package and reinstalling it.

2. Why can’t I execute the Node.js command entered on the command line?

It may be because the installation path of Node.js is not automatically added to the PATH environment variable by the system. You can manually add the installation path of Node.js to the PATH environment variable, or use the complete file path. Call the node.exe file.

3. How to uninstall Node.js?

If you need to uninstall Node.js, you can uninstall it through "Programs and Features" in the "Control Panel" under Windows; you can use terminal commands to uninstall under Mac OS and Linux.

Summary:

The above is the detailed process of installing Node.js on the computer. It should be noted that installing Node.js is not a one-time process. It requires you to continuously utilize and improve it in subsequent practical learning. I hope this article will help you understand the installation of Node.js. You are welcome to leave comments and thank you for reading.

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