jQuery.validator rule for not checked checkbox

advertisements

I would like a jQuery.validator rule for a checkbox that is not checked. Below is what I have if the checkbox is checked, but I can't figure out the syntax for a rule for not checked. Any help would be appreciated. Thanks!

rules: {
    sbPhone: {
         required: "#sbPhoneMe:checked",
         phoneUS: true
    },


Try :not()

rules: {
    sbPhone: {
         required: "#sbPhoneMe:not(:checked)",
         phoneUS: true
    },