Running a Javascript form in ASP.NET:problem

Nostromo77 · February 4th, 2007, 12:45 AM

Hello,

I'm a stupid newbie trying to insert a quick-and-dirty Javascript email form in an .aspx page. For some reason, trying to execute the form returns a "Object reference not set to an instance of an object" error. Will the Javascript only work in a regular .html page, or can ASP.NET controls and Javascript play well together?

Any help or advice would be much appreciated. For reference, the javascript inserted is:

Header:
<

Code:

script name="JavaScript">
                    <!-- Copyright 2000 by William Bontrager
                    function SendEmail()
                    {
                        var toaddy = '[email protected]';
                        var subject = 'ATTN: Request Information';
                        var mailer = 'mailto:' + toaddy + '?subject=' + subject +     '&body=' + 
                    'Name%20is\n\t' + document.jsform.visitorname.value + 
                        '\n\n' + 
                    'Email%20is\n\t' + document.jsform.email.value + 
                        '\n\n' + 
                    'Message:\n\n' + document.jsform.message.value +
                        '\n\n';
                        parent.location = mailer;
                     } // -->
        </script>

Body:

Code:

<form name="jsform">
                                        <table><tr>
                                            <td align="right">Name</td>
                                            <td><input name="visitorname"  size="27"></td>
                                            </tr><tr>
                                            <td align="right">E-mail</td>
                                            <td><input name="email" size="27"></td>
                                            </tr><tr>
                        <td colspan="2">
                                            Your message:<br>
                                            <textarea name="message" cols="31" rows="10" wrap="soft">
                                            </textarea>
                                                <center>
                                                <p>
                                                    <input type="submit" onClick="SendEmail()" value="Send Message">
                                                </center>
                                             </td>
                                            </tr></table>
                                          </form>

Imar · February 4th, 2007, 05:45 AM

Hi there,

I am not sure what you're trying to do, but there are a few problems with your code. First, look at this:

<form name="jsform">

If you look in the HTML in the browser, there's a fair chance that ASP.NET renamed your form to something else. By default, you only have one form, and .NET takes care if it. The final HTML in the browser may shed some light on this.

Second, your form elements may have been renamed, so visitorname is no longer visitorname. Again, look in the HTML for this.

Then the onsubmit. Your function is fired, but the form is also submitted to te server. Not sure if that's what you find.

Finally, look at this:

parent.location = mailer;

Are you working with frames??

If you explain what your code is supposed to do, I may be able to help you with a .NET alternative....

Imar
---------------------------------------
Imar Spaanjaars
http://Imar.Spaanjaars.Com
Everyone is unique, except for me.
Author of ASP.NET 2.0 Instant Results and Beginning Dreamweaver MX / MX 2004
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jazzcatone · February 5th, 2007, 09:01 PM

I personally haven't had much experience using javascript to send an email so obviously I'm biased but I would perhaps suggest using VB or C# to send your email. There are lots of examples out there on how to do it. Plus Imar is correct. Lots of things get renamed so doing it with the .NET framework will help you get around some of your issues. Just a suggestion. - Jason