var Register = function () {
    this.Startup = function () {
        $('#select').on('click', this.OnSelectChange.bind(this));
    };

    this.OnSelectChange = function () {
        var option = $("#select option:selected");
        console.log(option.val());
        if (option.val() !== '请选择') {
            $('#select').css({
                color: '#3a3a3a',
                fontSize: '16px'
            });
        } else {
            $('#select').css({
                color: '#868686',
                fontSize: '14px'
            });
        }
    };
};

$(document).ready(function () {
    var register = new Register();
    register.Startup();
});