INTELLIGENT WORK FORUMS
FOR COMPUTER PROFESSIONALS

Log In

Come Join Us!

Are you a
Computer / IT professional?
Join Tek-Tips Forums!
  • Talk With Other Members
  • Be Notified Of Responses
    To Your Posts
  • Keyword Search
  • One-Click Access To Your
    Favorite Forums
  • Automated Signatures
    On Your Posts
  • Best Of All, It's Free!

*Tek-Tips's functionality depends on members receiving e-mail. By joining you are opting in to receive e-mail.

Posting Guidelines

Promoting, selling, recruiting, coursework and thesis posting is forbidden.

Jobs

Geolocate and Form Auto-Submit

Geolocate and Form Auto-Submit

(OP)
I am trying to retrieve the visitor's coordinates using the standard HTML5 Geolocation API using Javascript.

The problem is, I need to get the latitude & longitude variables into a server-side variable. The only way to accomplish this is to first, retrieve the coordinates and then place them into a hidden form input and then auto-submit the form and pass the hidden form inputs that contain the coordinates.

The problem I am having is auto-submitting the form after the coordinates are obtained by the javascript.

I have the following code:

CODE -->

<% lat = Request("lat")
   lng = Request("lng")
   Response.write("lat= " & lat & "<br />")
   Response.write("long= " & lng & "<br />")
%>  

<script>

function geoFindMe() 
{
  var output = document.getElementById("out");
    if (!navigator.geolocation){
       output.innerHTML = "<p>Geolocation is not supported by your browser</p>";
    return;
}

function success(position) 
{
    var latitude  = position.coords.latitude;
    var longitude = position.coords.longitude;
     document.searchform.lat.value = latitude;
     document.searchform.lng.value = longitude;
     document.searchform.action ="/includes/stores/Get_Cordinates.asp";
     document.searchform.submit();
     submitform();

    
};

function error() 
{
 output.innerHTML = "Unable to retrieve your location";
};

output.innerHTML = "<p>Locating…</p>";
navigator.geolocation.getCurrentPosition(success, error);
}

</script>

<script>
geoFindMe()
</script>

<div id="out"></div>

<form method="post"  name="searchform" action="/includes/stores/Get_Cordinates.asp" >
 <input type='hidden' name='lat' value='' />
 <input type='hidden' name='lng' value='' />
</form> 



Can someone advise as to why this won't auto-submit the from named "searchform" after the coordinates have been retrieved?

My goal is to have the javascript retrieve the user's coordinates, place them into the hidden form inputs, and then have the javscript automatically submit the "searchform" form.

Any help would be well appreciated.

RE: Geolocate and Form Auto-Submit

Your script call occurs before the form exists in the document object model.

Chris.

Indifference will be the downfall of mankind, but who cares?
Time flies like an arrow, however, fruit flies like a banana.
Webmaster Forum

RE: Geolocate and Form Auto-Submit

Your JS is executing before your HTML has a chance to actually render and as such does not exist in the DOM. So there is no form to submit at that point.

Move your geoFindMe() function to below the form.

----------------------------------
Phil AKA Vacunita
----------------------------------
Ignorance is not necessarily Bliss, case in point:
Unknown has caused an Unknown Error on Unknown and must be shutdown to prevent damage to Unknown.

Web & Tech

Red Flag This Post

Please let us know here why this post is inappropriate. Reasons such as off-topic, duplicates, flames, illegal, vulgar, or students posting their homework.

Red Flag Submitted

Thank you for helping keep Tek-Tips Forums free from inappropriate posts.
The Tek-Tips staff will check this out and take appropriate action.

Reply To This Thread

Posting in the Tek-Tips forums is a member-only feature.

Click Here to join Tek-Tips and talk with other members!

Resources

Close Box

Join Tek-Tips® Today!

Join your peers on the Internet's largest technical computer professional community.
It's easy to join and it's free.

Here's Why Members Love Tek-Tips Forums:

Register now while it's still free!

Already a member? Close this window and log in.

Join Us             Close