Javascript Checking Dynamic HTML from ASP 1

[scripter50]

I have an ASP page generating html code like this...

<%for i = 1 to nNbrOfDays%>

<table>
<tr>
<td>Day <%=i%>&nbsp;<input type="text" name="txtDate<%=i%>">td>

<td><select name="cboService<%=i%>" style="width:120" onchange="fnPopVisits<%=i%>();">
<option value="0">No Service</option>
<option value="1">Daily Visits</option>
<option value="2">Live-In</option>
</select>
</td>
etc...etc...
<% next %>
<input type="submit" name="btnSubmit" value="Proceed" onclick = "return fnValidate();"> ....

I'm trying to do an edit check with javascript to prevent empty fields..

<javascript>
funtion fnValidate() {
var nbrofdays = document.frmNewReservation.hdnNbrOfDays.value;
for (i = 1; i<=nbrofdays; i++) {
if (document.frmNewReservation.txtDate.value =="") {
alert("Enter value..");
return false;
}
}
</script>

I am not able to access the form element this way, "txtDate" is not available??? Any ideas?

Thanks in advance,
scripter50

 

[Sheco]

You dont have an array named txtDate

What you have is a bunch of items named:
txtDate1
txtDate2
txtDate3
...
txtDateX

Where X = nNbrOfDays



PS: It looks like there is a missing "</"
<input type="text" name="txtDate<%=i%>">[red]</[/red]td>

 

[Sheco]

Oh, and your script starts with <javascript> but ends with </script>

....

Maybe try something like this:

<script>
funtion fnValidate() 
{
 var nbrofdays = document.frmNewReservation.hdnNbrOfDays.value;
 for (i = 1; i<=nbrofdays; i++) 
  {
   if (document.all("txtDate" + i.toString) == "")
    { 
     alert("Enter value..");
     return false;
    }
  }
 return true;
}
</script>

PS: This is really more of a JavaScript question than an ASP question to the extent that it deals with client-side rather than server-side validation... so you might try asking in the JavaScript forum: forum216

 

[scripter50]

Thanks Sheko for your quick Sunday response! Also, sorry for my abbreviated code in my post, just trying to save space. Also, I thought of posting in javascript, but not sure if user would understand the asp generated html!

I'll give your suggestion a go. Is there a way to put all of the form variables into an array so I could access them as I thought?

Thanks again,
scripter50

 

[DotNetGnat]

here is how you can loop through all form fields...you can also put them into an array if you want...

For each inputField in Request.Form
	For each inputValue in Request.Form(inputField)
		response.write inputField  & " = " & inputValue & "<
		br>"
	Next
Next

-DNG

 

[scripter50]

Sheko,
Doesn't work? The script doesn't see any empty fields? Do I need to put the values into an array before the document.all call? I'm confused! My js manual shows document.all, but no reference to document.all("formfield")??
Thanks again,
Scripter50

 

[scripter50]

Sheko,
Never mind, I needed to put .value in the string, it works fine.
Thanks again.