Validation Function w/ parameters

[jshurst]

I have the following function which validates numbers from an asp.net control (basically masking).

<script language="javascript">
function IsNumber(source,arguments)
{
  var ValidChars = "0123456789";
  var Char;
  var sText=document.getElementById("ctl00_cphMainContent_txtPID").value;
  for (i = 0; i < sText.length; i++) 
  { 
    Char = sText.charAt(i); 
    if (ValidChars.indexOf(Char) == -1) 
    {
       arguments.IsValid = false;
       return;
    }
  }
  return;
}
    </script>

and call the function by simply putting "IsNumeric" without specifically passing the parameters.

I would like to replace "ctl00_cphMainContent_txtPID" with a variable that I can pass into the function. Can someone tell me how to do this? If I try to add another variable then the function stops working.

Thanks,

J

 

[cLFlaVA]

what is "source" supposed to do? you could do this:

function IsNumber(source,arguments)
{
  var ValidChars = "0123456789";
  var Char;
  var sText=source.value;
  for (i = 0; i < sText.length; i++)
  {
    Char = sText.charAt(i);
    if (ValidChars.indexOf(Char) == -1)
    {
       arguments.IsValid = false;
       return;
    }
  }
  return;
}

and then call it like:

<input type="text" name="t1" onchange="IsNumber(this);" />

how are you calling the function?



*cLFlaVA
----------------------------
[tt]somebody set up us the bomb![/tt]

[URL unfurl="true"]http://www.coryarthus.com/[/url]

 

[jshurst]

I simply copied this function from a website.

I'm calling the function like this

<asp:CustomValidator ID="CustomValidator1" runat="server" [b]ClientValidationFunction="IsNumber"[/b] ControlToValidate="txtPID" ErrorMessage="Only numbers are allowed."></asp:CustomValidator>

I would like to use this as a generic function for other controls on the page that require only numbers to be entered. Rather than just writing the same function again, I would like to pass in the name of the control.

 

[cLFlaVA]

maybe you should ask this in the ASP forum, then. The javascript side is the client side. if you need help with that, please copy/paste the code that your block above generates in the browser.



*cLFlaVA
----------------------------
[tt]somebody set up us the bomb![/tt]

[URL unfurl="true"]http://www.coryarthus.com/[/url]

 

[jshurst]

What do "source" and "arguments" mean? Seems like the function is expecting those arguments but I'm not passing them over. So are they automatically sent? If I remove them then the function stops working.

I would think that this would be more appropriate in this forum. Because if I change the function to a simple alertbox and pass a parameter then it works fine. Not much to do with asp.net, but rather a function question.

Thanks

 

[cLFlaVA]

it looks like "arguments" is expected to be some kind of object. "source" is not being used at all.



*cLFlaVA
----------------------------
[tt]somebody set up us the bomb![/tt]

[URL unfurl="true"]http://www.coryarthus.com/[/url]