如何从其他方法访问Angular.js $ scope？

Question

For example, I have such request to my server. As a response, I will get an array of objects with parameters: id, name and position. All of these loads into a table. How can I manipulate with an array $scope.employees if i will decide to change it later?

An answer from server is:

data = [{"id":1,"name":"Jack","position":"City guard"},{"id":2,"name":"Jim","position":"Sheriff"},{"id":4,"name":"Jack","position":"Cruel genius"},{"id":7,"name":"Guy","position":"Manager"}]  

And how to be sure, that request is already posted into a table, so i can perform some later operations?

angular
    .module('MyApp', [])
    .controller('MyController', ['$scope', '$http', MyController]);

function MyController ($scope, $http) {

    $http.get("/servlet").success(function(data){
        $scope.employees = data;
    });

}

function otherOperation () {
    $scope.employees.push({
        id : 5,
        name : "John",
        position : "Manager"
    });
}

HTML code:

<div id="content" ng-controller='MyController'>
                <table id="table">
                    <tr>
                        <th> ID </th>
                        <th> Name </th>
                        <th> Position </th>
                    </tr>
                    <tr ng-repeat="employee in employees">
                        <td>{{employee.id}}</td>
                        <td>{{employee.name}}</td>
                        <td>{{employee.position}}</td>
                    </tr>
                </table>
                <button ng-click="otherOperation"> Button </button>
</div>

Answer 1

The otherOperation method should be nested inside MyController, like this:

angular
.module('MyApp', [])
.controller('MyController', ['$scope', '$http', MyController]);

function MyController ($scope, $http) {

    function otherOperation () {
         $scope.employees.push({
             id : 5,
             name : "John",
             position : "Manager"
         });
     }  

     $http.get("/servlet").success(function(data){
        $scope.employees = data;
     });

}

You could also pass the $scope as a parameter, like this:

angular
.module('MyApp', [])
.controller('MyController', ['$scope', '$http', MyController]);

function MyController ($scope, $http) {

     $http.get("/servlet").success(function(data){
        $scope.employees = data;
     });

     otherOperation($scope);

}

function otherOperation ($scope) {
     $scope.employees.push({
        id : 5,
        name : "John",
        position : "Manager"
     });
 }