install express

To install Express in Node.js, follow these steps:

1. Open the terminal or command prompt.
2. Navigate to your Node.js project directory using the "cd" command.
3. Run the command "npm init -y" to initialize a new Node.js project with default settings.
4. Run the command "npm install express" to install the Express framework in your Node.js project.
5. Once the installation is complete, you can start using Express in your Node.js project by requiring it in your code and setting up routes and middleware as needed.