angularjs service to share properties between functions

sharedProperties.js

//share properties between functions
angular
    .module('app', [])
    .service('sharedProperties', function () {
        var hashtable = {};

        return {
            setValue: function (key, value) {
                hashtable[key] = value;
            },
            getValue: function (key) {
                return hashtable[key];
            }
      }
});