js_date

<script type="text/javascript" charset="utf-8">
    var dt=new Date();
    var str="今天是: ";
    str+=dt.getFullYear()+"年";
    str+=(dt.getMonth()+1)+"月";
    str+=dt.getDate()+"日";
    str+=dt.getHours()+":";
    str+=dt.getMinutes()+":";
    str+=dt.getSeconds()+" 星期";

    switch(dt.getDay()){
        case 0:
            str+="日";
            break;

        case 1:
            str+="一";
            break;
        case 2:
            str+="二";
            break;
        case 3:
            str+="三";
            break;
        case 4:
            str+="四";
            break;
        case 5:
            str+="五";
            break;
        case 6:
            str+="六";
            break;
    }
    document.write(str);
</script>