how do you check to see if a textbox exists? [Resolved]

[ober0330]

I create some of my textboxes dynamically, and I want to know how to check if one of them is there or not.

To explain better, I'll add that I use a loop to name them, always starting at 1, and there could be up to 16, but most of the time, there are only about 3-5.

[Acidic]

let's say they're called txt0, txt1 etc.
by called I mean id=txt1 not name=txt1

for (i=1; i<16; i++)
 {
 if (document.getElementById('txt'+i))
   {
   //It exists
   }
 }

[ober0330]

Ok, this is what I have:

     for (i=1; i<17; i++)
    {
        if (document.getElementById('act'+i))
        {
            URL = URL+"&act"+i+"="+document.dform.act+i+.value
        }
    }

and it's giving me script errors. I think it has to do with how I'm doing the "document.dform.act+i+.value" part.

[Acidic]

try changing
document.dform.act+i+.value
to:
eval("document.dform.act"+i+".value")

[Acidic]

or else to:
document.getElementById("act"+i).value

[ober0330]

I used the second one... that worked.