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nodejs detailed installation steps

王林

May 18, 2023 am 10:53 AM

Node.js is a JavaScript running environment based on the Chrome V8 engine. It allows JavaScript to be used in areas other than the front-end, such as server-side programming. Node.js is also widely used for web development and building cross-platform applications. If you want to use Node.js to develop projects, you first need to install Node.js. The following will introduce the installation steps of Node.js in detail.

1. Download the Node.js installation package

To install Node.js, you first need to download the latest installation package from the Node.js official website. On the official website, you can download the installation package and source code of Node.js. If you want to learn the inner workings of Node.js, you can download the source code. Otherwise, just download the installation package directly. The official website address is: https://nodejs.org.

2. Install Node.js

After the download is completed, start installing Node.js. The installation of Node.js is a very simple process. You just need to double-click the downloaded installation package and follow the step-by-step instructions. There are several points to note:

The window cannot be closed during the installation process.
Select the default installation path.
After the installation is completed, you need to restart the computer to make the Node.js environment variables take effect.

3. Setting environment variables

After the Node.js installation is completed, you need to configure the Node.js installation directory in the system environment variables so that the system can find Node.js Order. The specific configuration method is as follows:

Open the control panel and select "Advanced System Settings".
Click the "Environment Variables" button and find "Path" under "System Variables" in the pop-up window.
Click the "Edit" button and click the "New" button in the pop-up "Edit Environment Variables" window.
Fill in the installation directory of Node.js in the new variable dialog box, for example: C:Program Files
odejs.
Click OK and confirm that the variable has been successfully added to the "Path" environment variable.

4. Check whether the installation is successful

After the installation of Node.js is completed, you need to check whether it has been successful. You can enter the "node -v" command on the console as follows:

$ node -v
v14.8.0

If the above command returns the version number, it means Node. js has been installed successfully.

Summary

The above are the installation steps of Node.js. If you are installing Node.js for the first time, it is recommended to follow the above steps step by step to avoid unnecessary errors. . After the installation is complete, you can start learning Node.js. Node.js has a rich module library and community support, so it is widely adopted.

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