What is `priority` of ng-repeat directive can you change it?

Question

Angular Documentation says: -

The compilation of the DOM is performed by the call to the $compile() method. The method traverses the DOM and matches

Answer 1

AngularJS finds all directives associated with an element and processes it. This option tells angular to sort directives by priority so a directive having higher priority will be compiled or linked before others. The reason for having this option is that we can perform conditional check on the output of the previous directive compiled.

In the followed example, first add button and only after add class to current button:

Demo Fiddle

App.directive('btn', function() {
  return {
    restrict: 'A',
    priority: 1,
    link: function(scope, element, attrs) {
      element.addClass('btn');
    }
  };
});

App.directive('primary', function() {
  return {
    restrict: 'A',
    priority: 0,
    link: function(scope, element, attrs) {
      if (element.hasClass('btn')) {
        element.addClass('btn-primary');
      }
    }
  };
});