JavaScript制作时钟特效

需求说明：制作显示年、月、日、星期几并且显示上午（AM）和下午（PM）的

12进制的时钟,具体效果如下所示：

代码如下：

<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"
        "http://www.w3.org/TR/html4/loose.dtd">
<meta  http-equiv="Content-Type" content="text/html charset=utf-8">
<html>
<head>
    <title>获取日期</title>
    <style type="text/css">
        p{
            font-weight: bold;
        }
    </style>
    <script type="text/javascript" >
       function fun(){
//            新建一个date对象
            var date =new Date();
            var year = date.getFullYear();
            var month = date.getMonth();
            var day = date.getDate();
            var hour = date.getHours();
            var minutes = date.getMinutes();
            var seconds = date.getSeconds();
            var week = date.getDay();
           if(week==1){
               week="一";
           }if(week==2){
               week="二";
           }
           if(week==3){
               week="三";
           }
           if(week==4){
               week="四";
           }
           if(week==5){
               week="五";
           }
           if(week==6){
               week="六";
           }
           if(week==7){
               week="日";
           }
            var am="";
            if(hour>=0 && hour<=12){
                am = "AM";
            }else{
                am = "PM"
            }
            document.getElementById("date").innerHTML=year+"年"+month+"月"+day+"日"+" "+hour+":"+minutes+":"+seconds+" "+am+" 星期"+week;

        }
        onload = function(){
            setInterval("fun()",100);
        }

    </script>
</head>
<body>
    <h1>你好，欢迎访问贵美商城！</h1>
    <p id="date"></p>
</body>
</html>
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原文地址：https://www.cnblogs.com/sincoolvip/p/5661375.html