HTML5 Geolocation, JavaScript, and Storing in Database

Question

The following code is JavaScript in a JSP. I want to store the user’s latitude and longitude locations in a MySQL database by setting the value of two hidden fields on the HTML (called “latitude” and “longitude”). However, when the parameters "latitude" and "longitude" are sent to the database, they are null! Why doesn’t this code work? Any help would be greatly appreciated!

//in my onSubmit() JavaScript function 
latitude = position.coords.latitude;
longitude = position.coords.longitude;
document.getElementById("latitude").value = String(latitude);
document.getElementById("longitude").value = String(longitude);
document.getElementById("study_session_form").action = "CreateStudySessionServlet";
document.getElementById("study_session_form").submit();

//in my HTML
<td><input type="hidden" id="latitude" /></td>                   
<td><input type="hidden" id="longitude" /></td>
<td><button id="submit_button” onclick="onSubmit();">Submit</button></td>

have you tried by using parseFloat(latitude) ? And the ìnput` field needs a name attribute to get to the value using post. — Brainfeeder
– Brainfeeder, Commented Apr 8, 2013 at 6:39

Adeel · Accepted Answer · 2013-04-08 06:39:11Z

6

you need to set name attribute, ID's are not sent during form submission. E.g.

<input type="hidden" id="longitude" name="longitude" />

answered Apr 8, 2013 at 6:39

Adeel

19.3k4 gold badges48 silver badges60 bronze badges

Sign up to request clarification or add additional context in comments.

1 Comment

user2250692 Over a year ago

Thanks! As you can probably tell I'm still new to this.

Collectives™ on Stack Overflow

HTML5 Geolocation, JavaScript, and Storing in Database

1 Answer 1

1 Comment

Your Answer

Hot Network Questions

Collectives™ on Stack Overflow

1 Answer 1

1 Comment

Your Answer

Sign up or log in

Post as a guest

Related