Tips on incorporating toggle css classes on an element with a click event?

When working with Angular typescript instead of $scope, I am having trouble finding examples that don't involve $scope or JQuery. My goal is to create a clickable ellipsis that, when clicked, removes the overflow and text-overflow properties of a specific class so that the full text can be expanded within a truncated div. I believe I may need to use ng-class or create a function for an ng-click event, but I have not been able to find any examples that do not utilize $scope.class. Unfortunately, it is not as simple as using this.class in typescript.

Below are the CSS classes I am attempting to toggle:

.homeDescriptionDiv {
  width: 250px;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.homeDescriptionDiv2 {
}

Here is the HTML element without any Angular references:

<div class="col-md-12 homeDescriptionDiv" ng-click="changeClass()">
                                <h4>
                                    Description
                                </h4>
                                {{challenge.description}}
                            </div>

The typescript code in my controller would resemble something like this:

element.class = class1;
function changeClass(){
this.class=class2
}

Ultimately, I would like to implement a toggling functionality by clicking again, but initially removing the first class is the main requirement. Any insights would be greatly appreciated! Thank you!

Answer №1

Within your controller, create a variable called toggleClass and link it to the element using

ng-class="{'another-class': vm.toggleClass}"

If toggleClass is set to true, the element will have the class another-class, otherwise it will not. To toggle this behavior, the function in the controller simply needs to be

this.toggleClass = !this.toggleClass

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