form validation headache

[Azzkika]

hey y'all

am busy writing a form validation script and i keep coming up against this problem. Here's the sc:

function checkValidation(formID, fieldID)
{
alert(document.RequestForInformation.Title.value);
// this alerts the ACTUAL document object -
// displays correct inputted value
alert("formID : "+formID+" fieldID : "+fieldID);
// this alerts the vales of the variables that will
// be used to build the virtual document object
// this alerts with the correct values passed to the function

fieldVal = document.formID.fieldID.value;
// *this assigns the value of the virtual document object
// *to be used in other validation functions -
// *this is where i get errors - see below:
if (fieldVal){checkElementNoSpace(fieldVal);}}
// value passed to new function

*error: i get an error of "'document.formID.fieldID.value' is not an object" - anybody got any ideas? Have I got the syntax wrong?

thanx - have a good day!!



Azz

[Azzkika]

Hey,

Sorry about that - I invoke the funtion throug an onChange event - ie:

<input class="formField" type="text" name="Title" size="50" onChange="checkValidation('RequestForInformation','Title')">

The two values passed are the form name (RequestForInformation) and the element name (Title)

Does that help?

Cheers

Azz

[Azzkika]

Hi there!

Cheers for the suggestion Dave - that guesswork was right on the money on your part - nice one!

Now - another problem. I've been toying arounf with the function call and have changed it from "onChange=(<call validation function>)" to "onBlur=(<call validation function>)" : is there any reason why I should not be using this?

Another issue that I have is the actual validation itself. The function will work correctly if there is a blank space in the form field, but not if nothing at all is entered. I've tried testing for this using a null value check, but it doesn't seem to pick it up. Here's the sc:

function checkElementNoSpace(value)
{ alert(value)
//alerts the passed value fine!

if ((value == null) || (value == " "))
//does the check for " " but not the null - have tried
//"null" and 'null' as well as reversing the order of the operands
//and inverting the logic of the if statement - none to any avail

{ alert("Please enter a value!");
return false; }
else
{ return true; }}

This function is called from the function above, to whit:

function checkValidation(formID, fieldID)
{fieldVal = document.forms[formID].elements[fieldID].value;
if (fieldVal){return checkElementNoSpace(fieldVal);}}

Which is called from the html by:

<input class="formField" type="text" name="Title" size="50" onBlur="checkValidation('RequestForInformation','Title')">

Anybody have any ideas? I'm sure it's got something to do with the logic in the checkElementNoSpace function, but I don't know what it is...

Thanks

Azz