<li>答题时间:<asp:Label ID="Label32" runat="server" Text="Label"></asp:Label>
<script language="JavaScript" type="text/javascript">
var tm = document.getElementById('Label32').innerText;
var maxtime = tm * 60 //一个小时,按秒计算,自己调整!
function CountDown() {
if (maxtime >= 0) {
minutes = Math.floor(maxtime / 60);
seconds = Math.floor(maxtime % 60);
msg = "距离考试结束还有" + minutes + "分" + seconds + "秒";
document.getElementById("timer").innerHTML = msg;
if (maxtime == 5 * 60) alert('注意,还有5分钟!');
--maxtime;
}
else {
clearInterval(timer);
document.getElementById("ImageButton2").click();
alert("时间到,结束!");
}
}
timer = setInterval("CountDown()", 1000);
</script>
分钟</li>
<li>试卷总分:<asp:Label ID="Label34" runat="server" Text="Label"></asp:Label>
分</li>
<span id="timer" style="color: #d8730d; float: right;"></span>
未经允许不得转载!c#,用js计时操作