<div ng-controller="myController1">
    <hello></hello>
    <hello></hello>
</div>

var app=angular.module('firstApp',[]);//app模块名
  app.controller('myController1',['$scope',function($scope){
}]);
app.directive('hello',function(){
    return{
      restrict:'E',
      template:"<div><input type='text' ng-  model='username'/>{{username}}",
      replace:true
    }
})

app.directive('hello',function(){
    return{
      restrict:'E',
      scope:{},
      template:"<div><input type='text' ng-model='username'/>{{username}}",
      replace:true
    }
})

app.directive('father',function(){
    return{
     restrict:'E',
     scope:{},
     controller:function($scope){
      this.mean1=function(){
       console.log('这是第一个方法....');
      };
      this.mean2=function(){
       console.log('这是第二个方法....');
      };
      this.mean3=function(){
       console.log('这是第三个方法....');
      }
     }
    }
});

app.directive('childFirst',function(){
    require:'^father',
    link:function(scope,ele,attr,fatherCtrl){
      fatherCtrl.mean1();
    }
})

require:'^father'