Google Map Api Invalid Value Error

Question

I have created the following code using Google Maps API that should make a direction line on Google Maps between two given addresses. My Code is:

Answer 1

When you call the function calculateAndDisplayRoute(directionsService, directionsDisplay, pointA, pointB); the positions pointAand pointB are undefined because they are the result of the asyncronous call of geocoder.geocode.

Move the calculateAndDisplayRoute function call after you've obtained a result from geocoder.geocode

  geocoder.geocode({
    'address': document.getElementById('addressTo').value
  }, function(results, status) {
    var location = results[0].geometry.location;
    poi

if (status == google.maps.GeocoderStatus.OK) {
    calculateAndDisplayRoute(directionsService, directionsDisplay, pointA, pointB);
    }

Since you're sending two geocoding requests you will need to wait for the geocoder status for each request.