Is it possible to utilize AngularJs Directives in order to add a styling to a pseudo Element?

As I continue my journey to learn Angular, a roadblock has appeared while trying to create a directive.

My goal is to construct a Directive that extracts the URL from a data-attribute ('background-image') and uses it as a background-image for a pseudo element. However, I am struggling to comprehend how to target the ::before element or if Angular has the ability to modify a pseudo element.

Here is a reference to the directive I'm attempting to develop:

I have succeeded in applying the background to div.item, but targeting the ::before has proven challenging.

Below is the code snippet of the directive:

angular.module('testApp', [
])

angular.module('testApp')
  .directive('backgroundImage', function(){
    return function(scope, element, attrs){
        restrict: 'A',
        attrs.$observe('backgroundImage', function(value) {
      // When I remove ::before, the image background applies correctly to .item.
        element::before.css({
                'background-image': 'url(' + value +')'
            });
        });
    };
});

Answer №1

It may be a bit challenging, but it can be done with some effort. Here's an example:

 let customCSS = "<style>.item:before{background-image:url("+customValue+")}</style>"
 angular.element("head").append(customCSS);

You can see it in action here: http://codepen.io/anon/pen/Fghij

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