JavaScript，javascript教程

JavaScript，javascript教程
擷取系統目前時間

<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"><html>  <head>    <title>test08.html</title>    <script type="text/javascript">        function showTime(){            var today=new Date();            var year=today.getFullYear();            var month=today.getMonth()+1;            var date=today.getDate();            var hour=today.getHours();            hour=checkTime(hour);            var shangxia="上午";            if(hour>12){                shangxia="下午";                hour=hour-12;            }            var minute=today.getMinutes();            minute=checkTime(minute);            var second=today.getSeconds();            second=checkTime(second);            var day=today.getDay();            var weekday;            switch(day){                case 0:                    weekday="星期天";                    break;                case 1:                    weekday="星期一";                    break;                case 2:                    weekday="星期二";                    break;                case 3:                    weekday="星期三";                    break;            }            var currentTime=year+"年"+month+"月"+date+"日 "+hour+":"+minute+":"+second+" "+shangxia+" "+weekday;            document.getElementById("time").innerHTML=currentTime;          }        function checkTime(t){            if(t<10){                t="0"+t;            }            return t;        }        setInterval("showTime()",1000);    </script>  </head>  <body>    <div id="time"></div>  </body></html>