Javascript help

[Darkelve]

http://www.delijn.be/overheden/contactform_test.html

 

In this contact form I'm making, there are 2 checkboxes. I want to make it so that the person that fills out the form has to check AT LEAST 1 of the 2 checkboxes (e.g. it should return an alertbox with an error message if no boxes are checked.)

 

This is the row containing the code:

 

<tr>
<td colspan="2">
<input name="abonnement_op1lijnkrant" type="checkbox" value="Ja" tabindex="20" /> een abonnement op de Op 1 Lijn-krant
<br /><br />
<input name="informatie_campagne" type="checkbox" value="Ja" tabindex="20" /> Volgende informatie over de Op 1 Lijn-campagne (aub specifiëren in onderstaand invulveld) 
</td>
</tr>

 

The Javascript I used for the rest of the form can be found in the external file 'form_validation_krant.js'

 

 

Oh yeah, as you might've gathered, I could also use some Javascript tutorials. If you know any tutorials for beginners, with lots of exercises, let me know!

 

 

Thanks in advance for the help!

 

 

Darkelve

[Cannonfodder]

What you want to do is add a clause to your submit button to call javascript code that validates fields..

 

 

<input type="submit" value="Save Record" name="btnSubmit" onClick="validate();return returnVal;" tabindex="1">

 

After that, its up to you to write the javascript code and design a system to define the validation.

 

I suggest that you google on

 

javascript validate

 

and explore various pre-written packages for validating web pages. I could tell you how to do it but its better to research it (learn more, go off on tangents) :)

[Darkelve]

I already have such a construct. But in this case -and I hate to say it- speed is more important than learning. I'm very busy and I don't have time to mess around too much. Well, perhaps this evening during my leisure time... :(

 

All I need to know is if-rule with the or-construct for these checkbox fields.

 

Script is here:

http://www.delijn.be/scripts/form_validation_krant.js

[Darkelve]

Nevermind, I found some time and was able to solve it. Although I could still use that Javascript tutorial! :lol: