Validating multiselect with jquery validation plugin

Question

Trying to figure out why my recipient multiselect isn\'t validating on form submission. Should be atleast 1 person chosen. I have it set to be required true but yet its stil

Answer 1

The accepted answer doesn't work anymore. The problem is that the "getChecked" argument doesn't do anything anymore. Here is an updated, working version of the validation method

$.validator.addMethod("needsSelection", function (value, element) {
                var count = $(element).find('option:selected').length;
                return count > 0;
            })