我有一个关于使用$rootScope.$broadcast和$scope.$on的争论
。我有一个模块和两个控制器(控制器1和控制器2)。
var app = angular.module("app",[]);
app.controller("Controller1",function ($scope,$rootScope){
$scope.$on("msgUpdated",function (event,data){
console.log(data.message);
})
app.controller("Controller2",function ($scope,$rootScope){
$scope.msg = "Hi!";
$rootScope.$broadcast("msgUpdated",{message:msg});
});
以上是我的代码。
问题是我的控制器 1 的 $scope.$on 不起作用。为什么?我不明白。以及,如何修复它以触发控制器 1 的 $scope.$on ?
<body ng-app="app">
<div ng-controller="Controller1">
<h1>{{msg1}}</h1>
<input ng-model="test" ng-blur="sendMsg()"/>
</div>
<div ng-controller="Controller2">
<h1>{{msg2}}</h1>
<input ng-model="test" ng-blur="sendMsg()"/>
</div>
</body>
var app = angular.module('app',[])
.controller('Controller1',['$rootScope','$scope',function($rootScope,$scope){
$scope.msg1 = "Start";
$scope.sendMsg = function() {
$rootScope.$emit('msg',$scope.test);
};
var cleanup = $rootScope.$on('msg2', function (event,data) {
$scope.msg1 = data;
});
$scope.$on('$destroy', cleanup);
}])
.controller('Controller2',['$rootScope','$scope',function($rootScope,$scope){
$scope.msg2 = "Start2";
$scope.sendMsg = function() {
$rootScope.$emit('msg2',$scope.test);
};
var cleanup = $rootScope.$on('msg', function (event,data) {
$scope.msg2 = data;
});
$scope.$on('$destroy', cleanup);
}]);
这是小提琴手:我总是使用$rootScope.$emit和清理。
http://jsfiddle.net/hbqsbLyg/