auto fill for state city using zipcode

Question

Hi i have a zipcode field when user enters a 5/9 digit zip it should auto populate the State and city fields.

Is there any thing like this usin javascript or JQuery???

Thanks

Answer 1

Using the Javascript Google Maps V3 API:

You need to reference this:

<script type="text/javascript" src="http://maps.google.com/maps/api/js?sensor=true"></script>

Do this:=

    var zip = <yourzipcode>;
    var lat;
    var lng;
    var geocoder = new google.maps.Geocoder();
    geocoder.geocode({ 'address': zip }, function (results, status) {
        if (status == google.maps.GeocoderStatus.OK) {
            geocoder.geocode({'latLng': results[0].geometry.location}, function(results, status) {
            if (status == google.maps.GeocoderStatus.OK) {
                if (results[1]) {
                    var loc = getCityState(results);
                }
            }
        });
        }
    }); 

function getCityState(results)
    {
        var a = results[0].address_components;
        var city, state;
        for(i = 0; i <  a.length; ++i)
        {
           var t = a[i].types;
           if(compIsType(t, 'administrative_area_level_1'))
              state = a[i].long_name; //store the state
           else if(compIsType(t, 'locality'))
              city = a[i].long_name; //store the city
        }
        return (city + ', ' + state)
    }

function compIsType(t, s) { 
       for(z = 0; z < t.length; ++z) 
          if(t[z] == s)
             return true;
       return false;
    }

This all returns a string containing the city and state in this format , but you can adjust this to your needs.