document on click switch-to-signup function signUp fadeOut signIn fade

$(document).on("click", '.switch-to-signup', function (e) {
        $('#signUp').fadeOut(0);
        $('#signIn').fadeIn(200);
    });
    $(document).on("click", '.switch-to-signin', function (e) {
        $('#signIn').fadeOut(0);
        $('#signUp').fadeIn(200);
    });