nodejs newbie installation

Node.js is a JavaScript runtime environment built on the Chrome V8 JavaScript engine, which can greatly expand the functionality of JavaScript. In the world of modern web development, it has become a very powerful and popular framework with which users can build efficient web applications. For novices, the installation of Node.js is still difficult. Below we will introduce the installation process of Node.js in detail.

1. Download Node.js

The official website of Node.js is https://nodejs.org. This website provides Node.js installation files for Windows, Mac OS X and Linux platforms. Therefore, users can choose the corresponding download file according to their own needs. Here we take the Windows platform as an example to explain.

1. Enter the Node.js official website, open the download page, and click the Windows Installer download link. The link to the page is https://nodejs.org/en/download/.

2. After the download is completed, double-click the downloaded file to start the installation.

2. Install Node.js

1. Open the downloaded Node.js installation file, click the "Next" button according to the prompts, and install it step by step.

2. Select the Node.js version to install. It is recommended to choose the stable version, which is usually the default version used in Node.js projects.

3. Select the installation path of Node.js.

4. Set environment variables. During the installation process, an option to set environment variables will pop up. It is recommended to select it in order to run Node.js commands in the command line interface.

5. After the installation is complete, start the command prompt or PowerShell.

6. Enter the command node -v to check whether Node.js is installed successfully.

3. Configuration Node.js

After the installation is complete, some configurations are required to ensure that Node.js can run smoothly.

1. npm configuration. npm is the package management tool for Node.js. If it is not installed and configured correctly, it will not be able to correctly install and manage Node.js extension packages. Make sure to open a command prompt or PowerShell window and enter the following command to check if npm is set up: npm -v.

2. Install Nodemon globally. Nodemon is a tool that helps us monitor source code changes and keeps Node.js applications running during the development phase. Start a command prompt or PowerShell window and type: npm i -g nodemon.

Solutions when encountering errors

The installation of Node.js requires certain skills. If you encounter errors or problems, you can try the following solutions:

1. Error: ENOENT: The workaround is to create a folder under the installation path.

2. The HTTPS certificate is invalid: The solution is to check the time setting and adjust it to the correct time.

3. Windows error 0x80070005: The solution is to run PowerShell as an administrator and run the following command: Set-ExecutionPolicy Unrestricted -Scope CurrentUser -Force.

Summary

Node.js is a popular web development environment that can be used to build efficient network applications. Its installation and configuration require certain skills but are not difficult. This article introduces you to the download, installation and configuration process of Node.js in detail, and provides some methods to solve Node.js installation problems. Thank you for reading, I hope it helps.

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