Lecture Notes for the Countries Project

Project Progress

• Data fetching successfully completed.
• Set functionality implemented.
• Some tasks are still pending:
  • Implement dark mode and light mode.
  • Filter by region.
  • Apply shimmer effect.

Importance of Shimmer Effect

• Shimmer Effect: Display a gray color blank card until the data arrives.
• Also known as skeleton loading or loading effect.
• Indicates to the user that some cards will appear here.

Current Status

• List of all countries is being displayed.
• Clicking on any country shows its details.
• The back button is functioning correctly.
• Displays blank for a second when the user arrives.

Example of YouTube

• When we search on YouTube, an initial gray color loading effect is shown.
• It is not an exact representation but provides clarity to the user.

How to Create Shimmer Effect

1. Create a Component:
   • Create a file named countriesListShimmer.jsx.
2. Use Countries Container:
   • Use the countriesContainer class.
3. Set Card Height:
   • Set the card height to 350 pixels.
4. Set Background Color:
   • Set the background color to gray.
5. Conditional Rendering:
   • If countriesData.length is 0, show the shimmer component; otherwise, show country data.

Looping and Rendering

• Use map() and array.from() for looping in React.
• Duplicate cards are not needed for higher values.
• Use new Array(length) to create an empty array.
• Loop through 10 or 100 cards as an example.

Next Assignment

• Create countriesDetailShimmer.jsx component.
• Display shimmer effect during loading.

Future Plan

• Enable dark mode and light mode in the next video.
• Studying the Context API for the app is necessary.

Questions and Answers

• If you have any questions or doubts, ask in the comments.
• You can also join the Telegram group.

Note: Understand all the main points and tasks thoroughly and work on the project.