What is the best way to make a div automatically scroll to the bottom of its height in

I've spent a considerable amount of time searching for an answer to this question, but unfortunately, none of the solutions I found were suitable for my specific scenario.

Currently, I am developing a Chat Application and one key feature is displaying older messages for selected chat channels. The container that holds these messages is a <table> element placed within a <div>. I have defined fixed dimensions for this div to control its height and width.

The messages from the chat channel are fetched from an SQL table using a corresponding servlet, and then displayed in the table utilizing AngularJS. My main query revolves around whether it is possible, using html/css/angular/javascript, to automatically scroll the div once all the messages have been uploaded?

Showcased below is a snippet of my code:

HTML:

<div ng-show="channelmsg">
    <div style="max-width: 500px; max-length: 500px; height: 500px; overflow: auto;" id="mydiv">
       <table>
            <tr ng-repeat="c in ChannelMsgResult">
                <td style="border: 1px; border-color =light gray; max-width:400px;">
                    <span><img ng-src={{c.Photo}} style="border-radius:0.5cm; width: 50px; height: 50px;" />
                        <a href="#" style="color: gray;"> {{ c.Nickname }} :</a> </span>
                        <br /> {{ c.Content }} &nbsp;&nbsp;&nbsp; <a href="#"><small>reply</small></a>
                                    &nbsp;&nbsp;&nbsp;&nbsp;&nbsp; <a href="#">see replies</a> <br />
                        <label style="color: #9fa1a3;"><small>{{ c.DateTime }}</small></label>
                </td>
            </tr>
        </table>
    </div>
</div>

The relevant Controller's function responsible for invoking the servlet and displaying (via ng-show) the "mydiv" div:

$scope.displayChannelMsg = function(x) {
     $http.get("http://localhost:8080/ExampleServletv3/displaychannelmsgservlet",{
            params:{
                channelid : x.ChanID
            }
        }).success(function(response) {
            setTimeout(function () {
              $scope.$apply(function(){
                console.log("went to servlet and succeeded")
                $scope.ChannelMsgResult = response;//this variable will hold the channels 
                $rootScope.channelmsg=true;

              });
            });
        });
};

Is there a straightforward way to achieve this functionality without relying on external libraries (e.g., angular-glue)?

Your guidance on this matter would be greatly appreciated.

Thank you!

Answer №1

Make sure each message has a unique identifier and then implement

$anchorScroll("latest_message_id");
to automatically scroll to the newest message.

Answer №2

Have you considered inserting the following code snippet:

setTimeout(function () {
    var element = document.getElementById("mydiv");
    element.scrollTop = element.scrollHeight;
}, 0);

right after your initial timeout function?

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