Question

这是我在aspx页面上的脚本，用于在页面加载时初始化计时器。

<script type="text/javascript">

        function display() {

            var hours = document.getElementById('<%=HidH.ClientID %>');

            var minutes = document.getElementById('<%=HidM.ClientID %>');

            var seconds = document.getElementById('<%=HidS.ClientID %>');



            if (hours.value == 00 && minutes.value == 00 && seconds.value == 00) {

                PageMethods.ReturnQuestionId(1);

                alert("Time Given For this Test is Over");


                var newwindow = window.location.replace("frmResultCheck.aspx");

                if (window.focus) { newwindow.focus() }
                return false;

            }
            if (minutes.value < 10) {
                minutes.value = minutes.value;
            }
            if (seconds.value <= 00) {
                if ((hours.value == 00) && (minutes.value == 00))
                    seconds.value = 00;
                else {
                    seconds.value = 60;
                    minutes.value -= 01;
                }
            }

            if (minutes.value <= 00) {
                if ((hours.value < 00) && (seconds.value < 00)) {
                    hours.value = minutes.value = seconds.value = 00;
                }
                else {
                    if ((hours.value == 00) && (seconds.value == 00))
                        hours.value = seconds.value = 00;
                    if ((hours.value > 00) && (minutes.value < 00)) {
                        minutes.value = 59;
                        hours.value -= 01;
                    }
                }
            }
            if ((minutes.value <= -01) || (hours.value <= -01)) {
                if (hours.value <= -01) {
                    minutes.value = 00;
                    hours.value += 01;
                }
                else

                    minutes.value -= 01;
                seconds.value = 00;
                minutes.value += 01;
            }
            else
                if (seconds.value > 00)
                    seconds.value -= 01;

            if (hours.value.length < 2) {
                hours.value = "0" + hours.value;

            }
            if (minutes.value.length < 2) {
                minutes.value = "0" + minutes.value;

            }
            if (seconds.value.length < 2) {
                seconds.value = "0" + seconds.value;

            }

            document.getElementById('counter').value = hours.value + ":" + minutes.value +


 ":" + seconds.value;

            setTimeout("display()", 1000);



            if (document.getElementById('btnSubmit').onclick == true)



                document.getElementById('counter').value = "";
        }

        display();
    </script>

这是我的aspx.cs页面：

protected void Page_Load(object sender, EventArgs e)
    {
int factor;
  if (factor >= 60)
                {
                    int b = factor / 60;
                    factor = factor % 60;
                    string time = Convert.ToString(b + ":" + factor);

                    if (factor < 10)
                    {
                        timer = TimeSpan.ParseExact(time, @"h\:m", null);
                    }
                    else
                    {
                        timer = TimeSpan.ParseExact(time, @"h\:mm", null);
                    }
                }
                else if (factor > 9 && factor < 60)
                {
                    timer = TimeSpan.ParseExact(factor.ToString(), "mm", null);
                }
                else
                {
                    timer = TimeSpan.ParseExact("0" + factor.ToString(), "mm", null);


                }
                HidH.Value = Convert.ToString(timer.Hours);



                HidM.Value = Convert.ToString(timer.Minutes);



                HidS.Value = Convert.ToString(timer.Seconds);
}

每次我点击页面上的下一个按钮，计时器返回到我点击下一个按钮的同一时间。我希望我的计时器能够在回发时连续不断地继续。

Answer 1

在C＃Page_Load代码中，在初始化值之前检查它是否是回发。仅在首次加载时初始化（即!IsPostBack）像这样：

protected void Page_Load(object sender, EventArgs e)
{
    if(!IsPostBack)
    {
        // Your initializing code here
    }
}

Javascript计时器初始化每个回发

1 个答案: