AngularJS allows to define async functions. An example is the $http service. HTTP service calls an API and returns a response as a promise.
$http.get(url)
.then(function(res){
// handle the response
}, function(res){
// handle the error
});
Retrieve the result from the Promise object using then function. The function has two arguments: onSuccess callback and onFailure callback.
The $q service in AngularJS creates a promise using the defer function.…