verificar se o texto de um input é um Google Place válido

gistfile1.js

function is_location_valid(address, address_success_div)
{
    var geocoder = new google.maps.Geocoder();

    geocoder.geocode( {"address": address}, function(results, status) {
        if (status == google.maps.GeocoderStatus.OK)
        {
            address_success_div.innerHTML = "SUCCESS";
        }
        else
        {
            address_success_div.innerHTML = "FAILURE";
        }
    });
}