JavaScript - Validation Function [RESOLVED]

[simonm]

I need to validate a text box in an ASP.NET project and am trying to use JavaScript even though I have never used it before. My task is so simply, I am embarrassed to ask; how do I ensure my string is at least 6 characters?

Here is my existing code:

<script language="javascript">
	function PasswordCheck(source, arguments)
		{
			if string.length(arguments.value) > 5)
				arguments.IsValid=true;
			else
				arguments.IsValid=false;
		}
</script>

I get an "Object Required" error when it runs.

[mendhak]

NameOfString.length will give you the length of the string.

[simonm]

I've changed my code accordingly:

<script language="javascript">
	function PasswordCheck(source, arguments)
		{
			if arguments.value.length > 5
				arguments.IsValid=true;
			else
				arguments.IsValid=false;
		}
</script>

...but I still get "Object Expected" error...

[mendhak]

What is "source" and "arguments"?

[simonm]

To clarify, I the function should be being called from the following validation control:

<asp:customvalidator 
	id="CustomValidator1" 
	runat="server" 
	ClientValidationFunction="PasswordCheck"
	ControlToValidate="txtPassword"
	Display="Dynamic" 
	ErrorMessage="The password must be at least 6 characters,">
</asp:customvalidator>

[skv_noida]

try this
<script language="javascript">
function PasswordCheck(source, argumentsID)
{
var obj = document.getelementbyid(argumentsID)
if (obj)
{
if obj.value.length > 5
return true;
else
return false;
}

}
</script>

[mendhak]

I still don't see how source and argument are passed to that function.

[simonm]

skv_noida

Thanks, but I can't get the function you suggested to pass the syntax check...

Mendhak

I still don't see how source and argument are passed to that function.

All I can say is that I can get it working in vbScript. The validation functions are supposed to take those parameters as far as I can tell. However, I need to get this working in JavaScript...

[simonm]

Doesn't anybody here know how to write validation functions for the CustomerValidator control in javascript here? I would have thought it were such a simple task, something that was common place...

Perhaps if anyone can tell me how to declare and instantiate a string object, assign it's value from arguments.value, that would probably do it...

[nemaroller]

Your problem is 'value' is lowercase, the first letter should be capitalized in your script above... args.Value instead of args.value.


Here's a tip :

Type in 'CustomValidator' in google, and the first hit has a step-by-step on how to work with CustomValidators.

Here's another tip:

Next time you need help with Javascript strings, type 'Javascript Strings' into Google first...you'll get a much faster response - I guarantee it!

[simonm]

Thankyou nemaroller! So Javascript's case sensitive, eh?