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js取时间避免刷服务端

    博客分类：
  • js
HTML 
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<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
	<head>
		<title>test.html</title>

		<meta http-equiv="keywords" content="keyword1,keyword2,keyword3">
		<meta http-equiv="description" content="this is my page">
		<meta http-equiv="content-type" content="text/html; charset=UTF-8">

		<script language="JavaScript">
var oInterval = "";
var nowday=new Date('2007','01','28','23','59','55','');
 function showtime(seed)
{
   seed++; 
  
   nowday =  DateAdd("s",1,nowday);
   
   var month =  nowday.getMonth();
  
   var calValue=""+ nowday.getFullYear();
  
   calValue +="年"+ ((month < 10)?"0":"")+ month ;
  
   calValue +="月"+((nowday.getDate() < 10)?"0":"")+ nowday.getDate()+"日 ";
  
 // document.all("svrCal").value =  calValue;
  
 var  timeValue =((nowday.getHours() < 10)?"0":"")+ nowday.getHours();
  
  timeValue+=((nowday.getMinutes() < 10)?":0":":")+ nowday.getMinutes();
  
  timeValue+=((nowday.getSeconds() < 10)?":0":":")+ nowday.getSeconds();
  
  document.all("svrtime").value= calValue + timeValue;  
  
  timer=window.setTimeout("showtime("+seed+")",1000);
 }
 window.onload = function()
  {
     var timeset  = 23*3600 + 59*60 + 50;
      showtime(timeset);
  }
  
            function DateAdd(interval,number,date){ 
     number=parseInt(number);
  switch(interval){ 
    case "y" : { 
      date.setFullYear(date.getFullYear()+number); 
      break; 
    } 
    case "q" : { 
      date.setMonth(date.getMonth()+number*3); 
      break; 
    } 
    case "M" : { 
      date.setMonth(date.getMonth()+number); 
      break; 
    } 
    case "w" : { 
      date.setDate(date.getDate()+number*7); 
      break; 
    } 
    case "d" : { 
      date.setDate(date.getDate()+number); 
      break; 
    } 
    case "h" : { 
      date.setHours(date.getHours()+number); 
      break; 
    } 
    case "m" : { 
      date.setMinutes(date.getMinutes()+number); 
      break; 
    } 
    case "s" : { 
      date.setSeconds(date.getSeconds()+number); 
      break; 
    } 
    default : { 
      date.setDate(d.getDate()+number); 
      break; 
    } 
  }
  return date;
} 
　　</script>
	</head>

	<body>
		<form name="show_time" onSubmit="0">
			现在时间是:2007年02月28日 23:59:56
			<INPUT type="text" name="svrtime" id="svrtime" SIZE=30 />
		</form>
	</body>
</html>
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