请大侠帮忙看看哪里出问题？老是报错：”缺少对象“

<html xmlns="http://www.w3.org/1999/xhtml">
<head runat="server">
    <title>Untitled Page</title>
    <script language="javascript">
    
    function disptime(){
        var now=new Date();
        var hour=now.getHours();
        var minute=now.getMinutes();
        var second=now.getSeconds();
        document.write("<h2>当前时间："+hour+":"+minute+":"+second);
        var time=setTimeout("disptime()",1000);
    }
    
    </script>
</head>
<body onload="disptime()">
    <form id="form1" runat="server">
    <div>
    
    </div>
    </form>
</body>
</html>

解决方案 »

  1.   


    <html xmlns="http://www.w3.org/1999/xhtml"> 
    <head runat="server"> 
        <title>Untitled Page </title> 
        <script language="javascript"> 
        var time;
        function disptime(){ 
            var now=new Date(); 
            var hour=now.getHours(); 
            var minute=now.getMinutes(); 
            var second=now.getSeconds(); 
            document.getElementById("pad").innerHTML = "当前时间："+hour+":"+minute+":"+second; 
    clearTimeout(time);
            time=setTimeout("disptime()",1000); 
        } 
        
        </script> 
    </head> 
    <body onload="disptime()"> 
        <form id="form1" runat="server"> 
        <div id="pad"> 
        
        </div> 
        </form> 
    </body> 
    </html>
      

  2.   

    谢了！clearTimeout(time);这是干吗的？
      

  3.   


      window.onload = function() { 
               window.setInterval("disptime()",1000)
            }
              function disptime() {
                  var now = new Date();
                  var hour = now.getHours();
                  var minute = now.getMinutes();
                  var second = now.getSeconds();
                  document.write(" <h2>当前时间：" + hour + ":" + minute + ":" + second);
                 
              }还有你的document.write只能写入一次，换成div来显示时间
      

  4.   

    window.onload=function() { 
               window.setInterval("disptime()",1000)
            }：这个不会；