1. If you need to add a new layer, you can add a new data source (image) in the app settings.
2. Then copy the loop body, and customize the class name of the image in the newly copied loop body.
3. In the image display area, a DIV element has also been added to the code mode, with a custom name.
4. At the very bottom of the outermost loop body, copy the JavaScript code that has already been written and insert the corresponding class names.