使用 angular.factory 建立服務

首先定義服務（在這種情況下，它使用工廠模式）：

.factory('dataService', function() {
    var dataObject = {};
    var service = {
        // define the getter method
        get data() {
            return dataObject;
        },
        // define the setter method
        set data(value) {
            dataObject = value || {};
        }
    };
    // return the "service" object to expose the getter/setter
    return service;
})

現在你可以使用該服務在控制器之間共享資料：

.controller('controllerOne', function(dataService) {
    // create a local reference to the dataService
    this.dataService = dataService;
    // create an object to store
    var someObject = {
        name: 'SomeObject',
        value: 1
    };
    // store the object
    this.dataService.data = someObject;
})

.controller('controllerTwo', function(dataService) {
    // create a local reference to the dataService
    this.dataService = dataService;
    // this will automatically update with any changes to the shared data object
    this.objectFromControllerOne = this.dataService.data;
})