Jquery validation depends bootstrap switch

Question

I want to use validation on a date field (seguro_resp_civil_validade). This field only needs to be validated when the bootstrap switch (seguro_resp_civil) is "ON".

I have this piece of code:

seguro_resp_civil_validade: {

required: {
    depends: function(element){
        return $("#seguro_resp_civil").hasClass("checked")
    }
}

},

This is not working, maybe because I'm using a bootstrap-switch and the 'hasClass' is not correct for this use. How can I check if the bootstrap-switch is checked?

Thanks