详解Angularjs中的依赖注入

function SomeClass(greeter) {
this.greeter = greeter;
}
SomeClass.prototype.greetName = function(name) {
this.greeter.greet(name);
};

angular.module('myApp', [])
.factory('greeter', function() {
return {
greet: function(msg) {alert(msg);}
}
})
.controller('MyController',
function($scope, greeter) {
$scope.sayHello = function() {
greeter.greet("Hello!");
};
});

<div ng-app="myApp">
<div ng-controller="MyController">
<button ng-click="sayHello()">Hello</button>
</div>
</div>

// 使用注入器加载应用
var injector = angular.injector(['ng', 'myApp']);
// 通过注入器加载$controller服务：var $controller = injector.get('$controller');
var scope = injector.get('$rootScope').$new();
// 加载控制器并传入一个作用域，同AngularJS在运行时做的一样
var MyController = $controller('MyController', {$scope: scope})