Question

有没有办法在事件中访问变量集？

代码：

$scope.$on('event_detail', function (event, args) {
        $scope.id = args;
        console.log($scope.id); // it works

});
console.log($scope.id); // it says undefined

如果我尝试在控制台＆＃34; $ scope.id＆＃34;中显示，控制台会显示＆＃34; undefined＆＃34;。我想从函数事件$ scope。$ on

中访问变量

我的广播：

$scope.showDetail = function (data) {
        $rootScope.$broadcast("event_detail", data.id_case);
        $location.path("/detailcase/" + data.id_case);
    };

Answer 1

问题是$scope.$on是异步的，所以当你在事件函数之外调用console.log时，$scope.id尚未设置。

所以你必须在$on函数中做任何你想做的事情，因为你确定已经填充了$scope.id;

Answer 2

问题是你在这里定义{ "my_type": { "properties": { "title": { "type": "string", "fields": { "shingles": { "type": "string", "analyzer": "my_shingle_analyzer" } } } } } ..直到现在才发生呼叫..

delegate

如果您的代码看起来像下面的内容，那么它将起作用......

$scope.$on('event_detail', function (event, args) {
        $scope.id = args;

        // it will work because the $scope.id get populated
        console.log($scope.id); 

});

//$scope.id It is not populated yet .. 
//it will be populated when the broadcast get called
console.log($scope.id);

在事件中设置访问变量

2 个答案: