Javascript angularjs ng选项嵌套变量

Ng选项似乎对$scope上的对象不起作用。例如$scope.model.colors。 这是一个错误还是我的代码中的错误。

函数主（$scope）{
$scope.model.selected=“value1”；
$scope.model.colors=[“value1”、“value2”、“value3”]；
}
{{selected}}

无法在范围中创建模型对象

function Main($scope) {

 $scope.model = {};  //create model object in scope.
 $scope.model.selected = "value1";
 $scope.model.colors = ["value1", "value2", "value3"];
}

---

无法在范围中创建模型对象

function Main($scope) {

 $scope.model = {};  //create model object in scope.
 $scope.model.selected = "value1";
 $scope.model.colors = ["value1", "value2", "value3"];
}

---

告诉$scope.model它是一个对象

function Main($scope) {
  $scope.model = {};
  $scope.model.selected = "value1";
  $scope.model.colors = ["value1", "value2", "value3"];
}

---

Angular找不到未定义的模型

告诉$scope.model它是一个对象

function Main($scope) {
  $scope.model = {};
  $scope.model.selected = "value1";
  $scope.model.colors = ["value1", "value2", "value3"];
}

Angular在未定义模型的情况下无法找到该模型