显示一个钟表 

<script>
function startTime(){
    var today=new Date();
    var h=today.getHours();
    var m=today.getMinutes();
    var s=today.getSeconds();
     h=checkTime(h);
    m=checkTime(m);
    document.getElementById('txt').innerHTML=h+":"+m+":"+s;
    t=setTimeout(function(){startTime()},500);
}
function checkTime(i){
    if (i<10){
        i="0" + i;
    }
    return i;
}
</script>
</head>
<body onload="startTime()">
    
<div id="txt"></div>

 

posted @ 2017-04-30 09:02  soyosuyang  阅读(151)  评论(0)  编辑  收藏  举报