How to open Next JS localhost website on mobile while development.

To view a Next.js app running on your local development server on a mobile device, you will need to find the IP address of your development machine and use it to access the app from the mobile device. Here are the steps you can follow:
On your development machine, open the command prompt or terminal and run the following command to find your machine's IP address:
ipconfig
Look for the "IPv4 Address" field. This is the IP address of your development machine.
On your mobile device, open a web browser and enter the IP address of your development machine, followed by the port number on which your Next.js app is running (usually 3000). For example, if the IP address of your development machine is 192.168.1.100 and your app is running on port 3000, you would enter the following URL in the mobile device's web browser:
http://192.168.1.100:3000
You should now be able to see your Next.js app running on your mobile device.
Keep in mind that your mobile device and your development machine must be connected to the same network for this to work. If you're having trouble accessing the app from your mobile device, try connecting both devices to the same Wi-Fi network.

Ravi Sharma
As a self-taught full-stack MERN developer, I have learned to work with the MERN stack, which includes MongoDB, Express.js, React, and Node.js technologies. I am proficient in front-end and back-end development and can build complete web applications from start to finish. I have a strong understanding of modern web development practices and am able to adapt to new technologies and methodologies as needed.