directives.directive('num',function(){
 return{
  scope:{},
  retrict:'EA',
  conteoller:function($scope){
   $scope.att=[];
   this.addOne=function(){
    $scope.att.push('1');
   };
   this.addTwo=function(){
    $scope.att.push('2');
   };
   this.addThree=function(){
    $scope.att.push('3');
   };
  },
  link:function(scope,ele,attrs){
   ele.on('mouseenter',function(event){
    console.log(scope.att)
   });
   ele.addClass('btn btn-primary');
  }
 }
})
directives.directive('one',function(){
 return{
  retrict:'EA',
  require:'?^num',
  link:function(scope,ele,attrs,numCtrl){
   numCtrl.addOne();
  }
 }
})
directives.directive('two',function(){
 return{
  retrict:'EA',
  require:'^num',
  link:function(scope,ele,attrs,numCtrl){
   numCtrl.addTwo();
  }
 }
})
directives.directive('three',function(){
 return{
  retrict:'EA',
  require:'^num',
  link:function(scope,ele,attrs,numCtrl){
   numCtrl.addThree();
  }
 }
})