Angular typeahead snippet.

booking.html

<div ng-controller="TypeaheadCtrl">
    <pre>Model: {{selected | json}}</pre>
    <input type="text" ng-model="selected" typeahead="state for state in states | filter:$viewValue | limitTo:8" class="form-control">
    <pre>Model: {{asyncSelected | json}}</pre>
    <input type="text" ng-model="asyncSelected" placeholder="Locations loaded via $http" typeahead="address for address in getLocation($viewValue) | filter:$viewValue" typeahead-loading="loadingLocations" class="form-control">
    <i ng-show="loadingLocations" class="glyphicon glyphicon-refresh"></i>
</div>

controllers.js

function TypeaheadCtrl($scope, $http) {

  $scope.selected = undefined;
  $scope.states = ['Alabama', 'Alaska', 'Arizona', 'Arkansas', 'California', 'Colorado', 'Connecticut', 'Delaware', 'Florida', 'Georgia', 'Hawaii', 'Idaho', 'Illinois', 'Indiana', 'Iowa', 'Kansas', 'Kentucky', 'Louisiana', 'Maine', 'Maryland', 'Massachusetts', 'Michigan', 'Minnesota', 'Mississippi', 'Missouri', 'Montana', 'Nebraska', 'Nevada', 'New Hampshire', 'New Jersey', 'New Mexico', 'New York', 'North Dakota', 'North Carolina', 'Ohio', 'Oklahoma', 'Oregon', 'Pennsylvania', 'Rhode Island', 'South Carolina', 'South Dakota', 'Tennessee', 'Texas', 'Utah', 'Vermont', 'Virginia', 'Washington', 'West Virginia', 'Wisconsin', 'Wyoming'];
  // Any function returning a promise object can be used to load values asynchronously
  $scope.getLocation = function(val) {
    return $http.get('http://maps.googleapis.com/maps/api/geocode/json', {
      params: {
        address: val,
        sensor: false
      }
    }).then(function(res){
      var addresses = [];
      angular.forEach(res.data.results, function(item){
        addresses.push(item.formatted_address);
      });
      return addresses;
    });
  };
}