<script>

    var weekdate= getWeekDate()

    switch(weekdate){

        case "星期一":;

        case "星期二":;

        case "星期三":;

        case "星期四":;

        case "星期五":alert("今天是"+weekdate+",今天要上班");break;

        case "星期六":;

        case "星期日":alert("今天是"+weekdate+",今天休息");break;

        console.log(working );break

    }

    function getWeekDate() {

       var now = new Date();

       var day = now.getDay();

       var weeks = new Array("星期日", "星期一", "星期二", "星期三", "星期四", "星期五", "星期六");

       var week = weeks[day];

       return week;

    }

    </script>