$filter

 

　　

angular.module('myApp',[])
.factory('Data',function () {
    return{
        message:'Hello ',
        city:[
            {
                name:'上海',
                py:'shanghai'
            },
            {
                name:'北京',
                py:'beijing'
            },
            {
                name:'四川',
                py:'sichuan'
            }


        ]
    };
})
　　

.controller('firstController',function ($scope,Data,$filter) {
    $scope.data=Data;
    var number=$filter('number')('3000');
    var jsonString=$filter('json')($scope.data);
    
})