1、推断型注入：函数参数的名称必须要和被注入的对象相同

var myModule = angular.module("MyModule",[]);
var MyCtrl = function($scope) {
 $scope.gameName = "大漠吃豆子";
}
myModule.controller("MyCtrl",MyCtrl);

2、声明式注入，编写较为繁杂

var myModule = angular.module("MyModule",[]);
var MyCtrl = function(funName) {
 funName.gameName = "大漠吃豆子";
}
MyCtrl.$inject = ['$scope'];//对应各个参数名
myModule.controller("MyCtrl",MyCtrl);

3、内联式注入，压缩工具压缩也不会报错

var myModule = angular.module("MyModule",[]);
myModule.controller('MyCtrl',['$scope',function($scope){
  $scope.gameName = "大漠吃豆子";
 }
]);