On Apr 20, 7:21 pm, map_to_learn <[email protected]> wrote:
> Hi,
>
> I'm new to Google Maps API and don't do a lot of Javascript coding.
> I'm building a web app that lets users input an address into a form.
> I'm using an "onsubmit" to geocode the address and store the
> structured address, lat and lng in hidden fields and then passing them
> to a php script when submitted. The goal is to store the lat/lng in a
> user's profile when it's created to limit the number of geocoding
> calls. Another script will pull all of the users and display them on
> a map.
>
> For some reason, the app is not able to pass the geocode data back to
> the hidden fields in the form unless I enable an alert in one of the
> javascript functions. Here is a code snippet. Can anyone give me
> some pointers on why turning on an alert in one of the functions makes
> it work but otherwise the data is not stored or passed to the php
> script?
Sounds like you don't understand the asynchronous nature of
geocoding...
> function InsertAddressLatLng(response) {
> if (!response || response.Status.code != 200) {
> alert("Sorry, there was an error geocoding your address");
> } else {
> place = response.Placemark[0];
> document.inputaddress.field_2.value =
> place.Point.coordinates[1];
> document.inputaddress.field_3.value =
> place.Point.coordinates[0];
> document.inputaddress.field_4.value = place.address;
> }
> }
This looks like it should work...
>
> function showLocation() {
> var address = document.inputaddress.field_1.value;
> geocoder.getLocations(address, InsertAddressLatLng);
>
> //debugging alert statement- form works only when this is turned
> on.
> alert(address);
> }
> </script>
>
> </head>
>
> <body onload="initialize()" onunload="GUnload()">
>
> <form name="inputaddress" action="finished_test.php"
> onsubmit="showLocation();"
This doesn't look like an API problem, but a general HTML form
submission problem.
I suspect you need to return false here or the form will be submitted
before the results come back.
You really should read the posting guidelines and post a link to your
map that exhibits your problem, not code.
-- Larry
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