How to Keep a Chat DIV Scrolled to the Bottom with Ajax?

Scrolling to the Bottom of a DIV

When creating a chat application with Ajax requests, maintaining a continuous view of messages at the bottom of the chat can be a common requirement. To achieve this, there are two essential aspects to consider:

Initial Scroll to Bottom

By default, to ensure that the most recent messages are visible, it's necessary to scroll the DIV to the bottom automatically upon loading the page. This can be achieved with the following JavaScript code:

var objDiv = document.getElementById("your_div");
objDiv.scrollTop = objDiv.scrollHeight;

Auto-scrolling after Ajax Requests

After receiving an Ajax response containing new messages, it's important to keep the scroll position at the bottom to maintain continuity. To do this, simply append the new messages to the DIV and execute the same code as above:

// Append new messages to the DIV

var objDiv = document.getElementById("your_div");
objDiv.scrollTop = objDiv.scrollHeight;

This approach ensures that the chat window remains scrolled to the bottom, providing a seamless and user-friendly chat experience.

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