How to Determine the Visibility of .loading Divs During Dynamic Data Loading?

Discovering the Visibility of .loading Divs for Dynamic Data Loading

In web development using jQuery, dynamically loading more data as a user scrolls can enhance the user experience. However, in scenarios with multiple .loading divs, identifying which one is currently visible becomes a challenge.

To address this, it's essential to monitor the scroll position and check if the .loading div comes into view. One approach is to utilize jQuery's scroll function. As the user scrolls down the page, this function will be executed continuously.

Within this function, we need to determine if the user has reached the bottom of the page. This can be achieved by comparing:

• $(window).scrollTop(): The vertical scroll position of the window
• $(document).height(): The total height of the document
• $(window).height(): The visible height of the window

When the scroll position equals the document height minus the visible height, it indicates the user has scrolled to the bottom.

Once this condition is met, an Ajax call can be made to fetch the next set of data from the server. This request should be asynchronous to prevent freezing the user interface. While waiting for the response, a loading indicator can be displayed in place of the .loading div.

Upon receiving the server's response, the newly acquired data can be appended to the appropriate .loading div. This seamlessly provides additional data as the user scrolls, ensuring a smooth and optimized user experience.

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