Roll on load directive

rollOnLoad.js

angular.module('saidpApp')
  .directive('rollOnLoad', function(){
    return {
      restrict: 'A',
      link: function(scope,element){
        element.addClass('preroll');
        setTimeout(function() {
          requestAnimationFrame(function() {
            element.removeClass('preroll');
          });
        }, 10);
      }
    };
  });