Example of using a promise in Angular

angular_promise_controller.js

var makePromiseWithSon = function() {

  // This service's function returns a promise, but we'll deal with that shortly
  SonService.getWeather()

    // then() called when son gets back
    .then(function(data) {

      // promise fulfilled
      if (data.forecast === 'good') {
        prepareFishingTrip();
      } else {
        prepareSundayRoastDinner();
      }
    }, function(error) {

      // promise rejected, could log the error with: console.log('error', error);
      prepareSundayRoastDinner();
    });
};