javascript - 访问AngularJS中另一个函数的局部变量

Question

如何访问另一个函数中的变量？

myApp.controller "RegistrationsController", ($scope, $location, $http, $modal)->
  $scope.open = () ->
    # move to global
    modalInstance = $modal.open(
      templateUrl: "/assets/angular/templates/registrations/_signup.html",
      controller: "ModalController"
    )
  $scope.cancel = ->
    modalInstance.dismiss('cancel')
  $scope.saveUser = () ->
    $scope.cancel()

从上面的代码中，我尝试通过 cancel 函数关闭 modalInstance (模态打开)。

但是，我想我需要先将 modalInstance 设为全局变量？

Answer 1

在函数外部声明modalInstance。这会将其范围限制到整个 Controller 。

myApp.controller "RegistrationsController", ($scope, $location, $http, $modal)->

  var modalInstance;

  $scope.open = () ->
    # move to global
    modalInstance = $modal.open(
      templateUrl: "/assets/angular/templates/registrations/_signup.html",
      controller: "ModalController"
    )
  $scope.cancel = ->
    modalInstance.dismiss('cancel')
  $scope.saveUser = () ->
    $scope.cancel()