实时显示时间

<script>

function mytime() {
    //创建日期的对象
    var dt=new Date();
    //获取年
    var year=dt.getFullYear();
    //获取月
    var month=dt.getMonth()+1;
    //获取日
    var day=dt.getDate();
    //获取小时
    var hours=dt.getHours();
    //获取分钟
    var minute=dt.getMinutes();
    //获取秒
    var second=dt.getSeconds();
    month=month<10?"0"+month:month;
    day=day<10?"0"+day:day;
    hours=hours<10?"0"+hours:hours;
    minute=minute<10?"0"+minute:minute;
    second=second<10?"0"+second:second;
    //return year+"年"+month+"月"+day+"日"+hours+":"+minute+":"+second;
    //document.getElementById("time1").innerHTML=year+"年"+month+"月"+day+"日"+hours+":"+minute+":"+second;
    document.getElementById("time1").innerHTML=year+"/"+month+"/"+day+"&nbsp"+hours+":"+minute+":"+second;
}

</script>

<p id="time1" style="color:blueviolet;"></p>
<script>
    function mytime() {
        var a=new Date();
        var b=a.toLocaleTimeString();
        var c=a.toLocaleDateString();
        document.getElementById("time1").innerHTML=c+"&nbsp"+b;
    }
   setInterval(function () {mytime()},1000);
</script>