$global service angularjs

services.js

/**
* App Services Module
*/
angular  
  .module('app.services', [])
  .factory('$global', [function () {

    this.settings = {
      fullScreen: false,
      fooProperty: true
    };

    this.get = function (key) {

      return this.settings[key];

    };

    this.set = function (key, val) {

      this.settings[key] = val;

    }

    this.getSettings = function () {

      return this.settings;

    }

  }]);