AngularJS controller之间的通信方式

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Angularjs为在scope中为我们提供了冒泡和隧道机制，$broadcast会把事件广播给所有子controller，而$emit则会将事件冒泡传递给父controller，$on则是angularjs的事件注册函数，有了这一些我们就能很快的以angularjs的方式去解决angularjs controller之间的通信

实例

html code

    
                  //父级  
    
                //自己  
        click me  
        
     //子级  
    
  
    
           //平级  

JavaScript code

phonecatControllers.controller('SelfCtrl', function($scope) {  
    $scope.click = function () {  
        $scope.$broadcast('to-child', 'child');  
        $scope.$emit('to-parent', 'parent');  
    }  
});  

phonecatControllers.controller('ParentCtrl', function($scope) {  
    $scope.$on('to-parent', function(d,data) {  
        console.log(data);         //父级能得到值  
    });  
    $scope.$on('to-child', function(d,data) {  
        console.log(data);         //子级得不到值  
    });  
});  

phonecatControllers.controller('ChildCtrl', function($scope){  
    $scope.$on('to-child', function(d,data) {  
        console.log(data);         //子级能得到值  
    });  
    $scope.$on('to-parent', function(d,data) {  
        console.log(data);         //父级得不到值  
    });  
});  

phonecatControllers.controller('BroCtrl', function($scope){  
    $scope.$on('to-parent', function(d,data) {  
        console.log(data);        //平级得不到值  
    });  
    $scope.$on('to-child', function(d,data) {  
        console.log(data);        //平级得不到值  
    });  
});

转载于:https://my.oschina.net/crazyharry/blog/1105109