AngularJS 1.5.8 how to check posts for html tags?

Question

Angular

There is a chat.

<form name="publish">
                    <textarea ng-textarea-enter="msgSend()" name="message" ng-model="textMsg"></textarea>
                   <input class="send-btn" ng-click="msgSend()" type="submit" value="" ng-disabled="isError()">
            </form>

The message coming in and the text field needs to be checked for html tags so that the SS message doesn't show 'SS' in italics. I think the idea is clear. I found the $sce built-in service, it has a bunch of methods, but not all of them work as I expected. for example

$scope.msgSend = function() {
            var tmp = $sce.trustAsHtml('My name is <div style = "color:red; width: 500px; height: 500px; background: red;"><b>Mudassar Khan</b></div>');            
            console.log(tmp);
        };

It will output an empty object, although in theory it should display all the tags as text. What's wrong?
https://docs.angularjs.org/api/ng/service/$sce

Answer 1

https://docs.angularjs.org/api/ngSanitize/service/...