如下所示，如果$scope.equipments=...那一段，放在$.post里就不能绑定到$scope.equipments上，如果放在外面就可以，这是为什么？

 

 mainApp.controller('equipmentsController', function($scope, $http) {
    $.post("getAllDeviceList.action",
            {},
            function(response){
                    $scope.equipments = [ {
                        "id" : "1",
                        "name" : "equipment01 ",
                        "number" : "11"
                    }, {
                        "id" : "2",
                        "name" : "equipment02 ",
                        "number" : "22"
                    }, {
                        "id" : "3",
                        "name" : "equipment03 ",
                        "number" : "33"
                    } ];

            }
    );

    $scope.equipments = [ {
        "id" : "1",
        "name" : "equipment01 ",
        "number" : "11"
    }, {
        "id" : "2",
        "name" : "equipment02 ",
        "number" : "22"
    }, {
        "id" : "3",
        "name" : "equipment03 ",
        "number" : "33"
    } ];

}