使用Java的倒数计时器

本文介绍了使用Java的倒数计时器的处理方法，对大家解决问题具有一定的参考价值，需要的朋友们下面随着小编来一起学习吧！

问题描述

我需要使用Javascript进行在线考试项目的倒数计时器.

Hi,

I need countdown timer in Javascript for Online Exam project.

推荐答案

<html xmlns="http://www.w3.org/1999/xhtml">
<head runat="server">
    <title></title>
    <script language ="javascript" >
        var tim;

        var min = 20;
        var sec = 60;
        var f = new Date();
        function f1() {
            f2();
            document.getElementById("starttime").innerHTML = "Your started your Exam at " + f.getHours() + ":" + f.getMinutes();


        }
        function f2() {
            if (parseInt(sec) > 0) {
                sec = parseInt(sec) - 1;
                document.getElementById("showtime").innerHTML = "Your Left Time  is :"+min+" Minutes ," + sec+" Seconds";
                tim = setTimeout("f2()", 1000);
            }
            else {
                if (parseInt(sec) == 0) {
                    min = parseInt(min) - 1;
                    if (parseInt(min) == 0) {
                        clearTimeout(tim);
                        location.href = "default5.aspx";
                    }
                    else {
                        sec = 60;
                        document.getElementById("showtime").innerHTML = "Your Left Time  is :" + min + " Minutes ," + sec + " Seconds";
                        tim = setTimeout("f2()", 1000);
                    }
                }

            }
        }
    </script>
</head>
<body onload="f1()" >
    <form id="form1" runat="server">
    <div>
      <table width="100%" align="center">
        <tr>
          <td colspan="2">
            <h2>This is head part for showing timer and all other details</h2>
          </td>
        </tr>
        <tr>
          <td>
            <div id="starttime"></div><br />
            <div id="endtime"></div><br />
            <div id="showtime"></div>
          </td>
        </tr>
        <tr>
          <td>

              <br />


          </td>

        </tr>
      </table>
      <br />


    </div>
    </form>
</body>
</html>

希望对您有帮助

最好的

I hope this is helpful to you

All the Best

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使用Java的倒数计时器

问题描述

推荐答案