用JavaScript實現考試系統倒計時

來源:互聯網
上載者:User

<html>

 <head>
 </head>

 <body>
  <input type="text" name="mss" id="mss" />

  <form action=" ">
   <input type="text" value="name" name="name" />

  </form>

  <body>
</html>

<script type="text/javascript">
 window.onload = function() {

  daojishi();
 }

 var counttime = 60 * 90;//把90分鐘化成總秒數

 function daojishi() {
  if (counttime >= 0) {
   var seconds = counttime % 60;//得到剩餘的秒數   89%60==29秒
   var min = Math.floor(counttime / 60);//分鐘
   if (min >= 60) {
    var hour = Math.floor(min / 60);

    min = Math.floor((counttime - hour * 60 * 60) / 60);

    document.getElementById("mss").value = hour + "小時" + min + "分"
      + seconds + "秒數";
   } else if (mis >= 1) {
    document.getElementById("mss").value = min + "分" + seconds
      + "秒數";
   } else {
    document.getElementById("mss").value = seconds + "秒數";
   }

   counttime--;
   vartt = window.setTimeout("daojishi()", 1000);
  } else {
   window.clearTimeout(vartt);
   window.confirm("考試時間結束,請單擊提交");
   tijiao();

  }
 }

 function tijiao() {
  document.forms[0].submit();
 }
 //-->
</script>
 

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