角度 $broadcast 不起作用. [英] Angular $broadcast not working.

问题描述

我正在尝试使用 $scope.$on 和 $scope.$broadcast.

这是视图:

<div ng-controller="ChildCtrl">{{内容}}

和控制器:

.controller('ParentCtrl', ['$scope', function($scope) {$scope.$broadcast('someEvent', 'bidule');}]).controller('ChildCtrl', ['$scope', function($scope) {$scope.$on('someEvent', function(event, b) {$scope.content = b;});}])

和 plunker

我在这里做错了什么?

解决方案

子控制器尚未实例化.将 broadcast 包装在 timeout 中可以工作:http://plnkr.co/edit/MF7P16K1OTv46JNgkkih?p=preview

$timeout(function(){$scope.$broadcast('someEvent', 'bidule');});

I am trying to share informations between two controllers with $scope.$on and $scope.$broadcast.

Here is the view:

<div ng-controller="ParentCtrl">
    <div ng-controller="ChildCtrl">
        {{content}}
    </div>
</div>

and the controllers:

.controller('ParentCtrl', ['$scope', function($scope) { 
    $scope.$broadcast('someEvent', 'bidule');
}])

.controller('ChildCtrl', ['$scope', function($scope) { 
    $scope.$on('someEvent', function(event, b) {
        $scope.content = b;
    });
}])

and the plunker

What am I doing wrong here?

解决方案

The child controller isn't instantiated yet. Wrapping the broadcast in a timeout works: http://plnkr.co/edit/MF7P16K1OTv46JNgkkih?p=preview

$timeout(function(){
   $scope.$broadcast('someEvent', 'bidule');
});

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