How to check installed nodejs version number

Node.js is a very popular JavaScript running environment that can run on a variety of operating system platforms. Checking the nodejs version number is a very important step in every Node.js installation process. This can ensure that you are installing the latest and most stable version. In this article, we will explain how to check the installed Node.js version number.

1. Windows system

For Windows users, you can check the installed Node.js version number in the following two ways:

Method 1: Using Command Prompt (cmd)
a. Open Command Prompt (cmd) (you can open "cmd" by entering "cmd" in the Start menu search bar and clicking Open Command Prompt)
b. In Enter node -v in the command prompt and press the Enter key
c. The output is the installed Node.js version number

Example:

C:\>node -v
v16.6.2

Method 2: Use PowerShell
a. Open Windows PowerShell (you can enter "powershell" in the search bar of the start menu and click to open)
b. Enter node -v in PowerShell and press Enter key
c. The output is the installed Node.js version number

Example:

PS C:\>node -v
v16.6.2

2. macOS or Linux system

For macOS or Linux users, you can check the installed Node.js version number in the following three ways:

Method 1: Use the command line terminal
a. Open Terminal
b. Enter node -v in the terminal and press Enter
c. The output is the installed Node.js version number

Example:

$ node -v
v16.6.2

Method 2: Use Bash or Zsh
a. Open the Bash or Zsh command line terminal
b. Enter node -v in the Bash or Zsh command line terminal and press the Enter key
c. The output content is the installed Node.js version number

Example:

$ node -v
v16.6.2

Method 3: Use nvm (Node Version Manager)
a. Open the terminal
b. Enter nvm in the terminal and press Enter
c. The output is the installed Node.js version number

Example:

$ nvm
v16.6.2

Summary:

Whether you are on a Windows system, macOS or Linux system, you can simply check the installed Node.js version number through the command line terminal or command prompt. For users who need to manage multiple Node.js versions, using Node Version Manager (nvm) can more conveniently manage and check Node.js version numbers. Remember, always make sure your version of Node.js is the latest and most stable!

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