MailChimp Newsletter Subscribe form input fields, show the List options. Hide Labels on keyup etc.

MailChimp_Newsletter_Signup.js

function hey_MCE_Fields() {
    var form = jQuery('#mc_signup_form'),
        inputEmail = jQuery('#mc_mv_EMAIL', form),
        inputFields = jQuery('.mc_input', form);
    
    inputFields.on({
        keyup: function(e, i){
            var self = this;
            var v = jQuery(self).val();
            jQuery(self).parent().siblings('div.mc_interests_header, div.mc_interest, div.mc_signup_submit').fadeIn(300);
            if(v) {
                jQuery(self).prev('label').fadeOut(30);
                jQuery(self).parent().addClass('has-value');
            } else {
                jQuery(self).prev('label').fadeIn(30);
                jQuery(self).parent().removeClass('has-value');
            }
        },
        blur: function(e, i) {
            var self = this,
                v = jQuery(self).val();
            if(!v) {
                jQuery(self).prev('label').fadeIn(30);
            }
        }
    });
}