check field is blank

[dude333]

Hi,

Can anyone tell me how I can check to see if this form field is blank on submit:

<input type='hidden' name='conn[]' id='cs' value=' '>

The problem is that javascript won't seem to allow the [] on the end of conn in the name.

ie this: theForm.conn[].value ==""; produces a syntax error.

i have tried this aswell:
var id=document.formname.cs;
document.getElementById(id).value="";

this produces an error that says object does'nt support this property .

I can't remove the [] from the end of the field name cos this is required for some server side processing.

Anyone got any ideas?

Cheers.

 

[kaht]

Javascript doesn't seem to like HTML array syntax. The [] syntax is used for javascript arrays as well, so javascript probably assumes you're accessing a javascript array, when this is not the case. Here is the workaround:

blah = theForm.elements['conn[]'];
alert(blah.value);

-kaht

 

[jemminger]

sort of OT, but i have heard so many people say that php requires this odd naming convention...i'll never understand why php can't seem to allow the same "normal" (non-bracketed) field names that EVERY other server-side language on the planet accepts...

=========================================================
-jeff

http://www.jeffemminger.com

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