Question

I’m trying to only validate a textfield when a user selects yes. If the option is no then the textfield should not be validated(and it’s hidden also).

The validation is done with the validate plugin from http://www.bassistance.de

Anyone can help me out? I made a fiddle to clarify.

http://jsfiddle.net/logistef/PaTJ4/27/

Answer 1

Have a look at the depends option in the validate API. Something akin to this should work for you:

$("#myForm").validate({
    required: {
        depends: function(el) {
            return $("#radio_Yes").attr('checked');
        }
    }
});

Here’s an updated fiddle with it working: http://jsfiddle.net/PaTJ4/31/

I’ve also taken the liberty of tidying up your code a little.