AngularJS 中的绑定问题

Binding issue in AngularJS

我正在尝试从 http get 请求进行绑定。 http get 返回 true 或 false。我已经测试了 get 并且它正在正确返回。当我 运行 下面的代码时,它也会正确显示警报 (1111)。但是,当我尝试更改按钮文本时,什么也没有出现!我已经尝试了我所知道的一切。任何建议都会有所帮助。

Post.js

myApp.controller('FollowController', ['$scope', '$http', function($scope, $http) {

    var status = "";

        $http.get('/Home/CheckFollower?idToFollow=' + profileId + '&followerId=' + currentUserId).
            success(function(data) {
                //check if it is a follower

                if (data) {
                    // Not following - Show unfollow
                    alert("1111");
                    $scope.statusMessage = data;


                } else {
                    //Following - show Follow

                    $scope.statusMessage = data;
                }

            })
            .error(function(data, status) {
                console.log(data);
            });

}]);

Html

   <span style="float: right" ng-controller="FollowController as follow">
                        <button type=" button" class="btn btn-success" onclick="location.href='@Url.Action("Follow", "Home", new { idToFollow = ViewBag.ProfileId, followerId = User.Identity.GetUserId() })'">
                            {{ follow.statusMessage }}</button>

                        </span>

您应该将变量绑定到 this 而不是 $scope,因为您正在使用 controllerAs approach

控制器

myApp.controller('FollowController', ['$scope', '$http',
    function($scope, $http) {
        var status = "";
        var follow = this;
        $http.get('/Home/CheckFollower?idToFollow=' + profileId + '&followerId=' + currentUserId).
        success(function(data) {
          //check if it is a follower
          if (data) {
            // Not following - Show unfollow
            alert("1111");
            follow.statusMessage = data;
          } else {
            //Following - show Follow
            follow.statusMessage = data;
          }
        })
        .error(function(data, status) {
          console.log(data);
        });
    }
]);