angularJS依赖注入

推断式注入：

function controllerName($scope){

                             $scope.msg="hello world";

                       }

显示注入：

var mapp=angular.module("myapp",[]);

var controllerName=function (a){

 a.msg="hello world"

}

controllerName.$inject=["$scope"];

myapp.controller("controllerName",controllerName)

行内注入：

var myapp=angular.module("myapp",[]);

myapp.controller("controllerName",["$scope",function($scope){

$scope.msg="hello world";(把$scope注入到function的参数中）

}