利用angular自带工具函数，加快开发速度

• angular.extend(obj,{})扩充对象
• angular.forEach([]/{},function(v,k){})可以便利数组，也可遍历对象；第一个参数是value，第二个参数index或key值

var obj={
            name:'xiongwei'
        }
        angular.extend(obj,{
            age:27
        })
        console.log(obj)

 <script type="text/javascript">
        var app=angular.module('test',[])
        app.controller('con1', ['$scope', function($scope){
             $scope.arr=['apple','pear','orange']
             $scope.arr.forEach(i=>console.log(i))

        }])

        var obj={
            name:'xiongwei'
        }
        angular.extend(obj,{
            age:27
        })
        console.log(obj)
    </script>

其实没必要，用es6那2种方法直接遍历即可，angular.extend()扩展对象到shi不错