'npm' is not recognized as an internal or external command, operable program or batch file

1. Download and install node.js

Link: https://nodejs.org/

After downloading, just choose the next step to install.

2. Problem description

After installing node.js, using npm --version may prompt that 'npm' is not an internal or external command, nor is it a executable program or batch file.
Then it is possible that the environment variable is not set properly.

3. Solve the problem

1. Open environment variable settings
   
2. Select the Path column and click Edit
   
3. Configure node.js environment variables (node.js environment variable path is the path to install node)
   

4. Start the cmd command window and enter npm --version to view the version information