Validating Complicated Required Field

[tmel01]

I am trying to come up with the correct validation scipt for a field that requires 13 characters - either numbers or numbers and x's, but does not allow for dashes, other letters or other characters. It is used for ISBN, and needs to be regulated because the professors cannot seem to grasp what is required. Can anyone help?

[Jared_Langdon]

Here you go. Put this in the validate event for your field. It will strip out any characters other than 0123456789xX and then check that the result has 13 characters.



validateISBN(this.rawValue);



function validateISBN(s) {

var rExp = /[^0123456789xX]/gi;

var strFilteredString = s.replace(rExp, "");

this.rawValue = strFilteredString;

return (strFilteredString.length == 13)

}



Jared Langdon

www.jlangdon.ca

[tmel01]

Thank you. This worked great for what I need. Your help is much appreciated.