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<%--倒计时--%>
<script type="text/javascript" language="JavaScript">
secs = 59; // Number of secs to delay -CHINA-studio
wait = secs * 100;
minute = 3; //考试总时间
//循环调用秒的减方法
cycle();
function cycle() {
for (i = 0; i <= (wait / 100); i++) {
//将i*1000改为i*100查看最后的效果
window.setTimeout("doUpdate(" + i + ")", i * 1000);
}
}
function doUpdate(num) {
if (num == (wait / 100)) {
cycle();
//三分钟前提醒考生交卷
if (minute == 3) {
alert("还有三分钟时间,请抓紧时间答卷!");
}
//时间到,提交表单
if (minute <= 0) {
// document.exam.action="";
document.all.btnhandin.click();
}
minute--;
} else {
wut = (wait / 100) - num;
//使得输出格式为00:00
s = wut < 10 ? "0" + wut : wut;
m = minute < 10 ? "0" + minute : minute;
//将剩余时间显示在页面上
document.getElementById('lefttime').innerHTML = "剩余时间: + m + "分" + s + "秒";
}
}
</script>
<td>
<asp:Label ID="lefttime" runat="server" Text="Label"></asp:Label></td>
</tr>