[FR]: Add paging in the demo, and add the drop-down refresh and drop-down load functions

### Is there an existing issue for this?

- [X] I have searched the existing issues

### Describe the problem

No dropdown refresh, dropdown load more features on the page

### Describe the solution

Add paging in the demo, and add the drop-down refresh and drop-down load functions

### Additional context

_No response_

### Code of Conduct

- [X] I agree to follow this project's Code of Conduct