Javascript倒计时更改

Question

我基本上是在我的一个网站上使用javascript倒计时，它包含了我需要的一切，但我想扩展一下，但我对js相对比较陌生。基本上，一旦倒计时完成，它就会显示一条消息，这很好，但是我想在倒计时旁边显示一条消息，当倒计时达到0时，倒计时就会被移除。

例如："New Year in，{ countdown }“，因此，当新年文本达到0时，应将其与倒计时一起删除，并替换为完成的文本。

下面是我使用的脚本：

    <script language="JavaScript">
TargetDate = "January/01/2014 12:00 am";
BackColor = "";
ForeColor = "#000";
CountActive = true;
CountStepper = -1;
LeadingZero = true;
DisplayFormat = "%%D%% Days, %%H%% Hours, %%M%% Minutes, %%S%% Seconds.";
FinishMessage = "<span class='finish'>Finished!</span>";
</script>
<script language="javascript">
function calcage(secs, num1, num2) {
  s = ((Math.floor(secs/num1))%num2).toString();
  if (LeadingZero && s.length < 2)
    s = "0" + s;
  return "<span class='digit'>" + s + "</span>";
}

function CountBack(secs) {
  if (secs < 0) {
    document.getElementById("cntdwn").innerHTML = FinishMessage;
    return;
  }
  DisplayStr = DisplayFormat.replace(/%%D%%/g, calcage(secs,86400,100000));
  DisplayStr = DisplayStr.replace(/%%H%%/g, calcage(secs,3600,24));
  DisplayStr = DisplayStr.replace(/%%M%%/g, calcage(secs,60,60));
  DisplayStr = DisplayStr.replace(/%%S%%/g, calcage(secs,1,60));

  document.getElementById("cntdwn").innerHTML = DisplayStr;
  if (CountActive)
    setTimeout("CountBack(" + (secs+CountStepper) + ")", SetTimeOutPeriod);
}

function putspan(backcolor, forecolor) {
 document.write("<span id='cntdwn' style=' font-weight:bold; background-color:" + backcolor + 
                "; color:" + forecolor + "'> </span>");
}

if (typeof(BackColor)=="undefined")
  BackColor = "white";
if (typeof(ForeColor)=="undefined")
  ForeColor= "black";
if (typeof(TargetDate)=="undefined")
  TargetDate = "12/31/2020 5:00 AM";
if (typeof(DisplayFormat)=="undefined")
  DisplayFormat = "%%D%% Days, %%H%% Hours, %%M%% Minutes, %%S%% Seconds.";
if (typeof(CountActive)=="undefined")
  CountActive = true;
if (typeof(FinishMessage)=="undefined")
  FinishMessage = "";
if (typeof(CountStepper)!="number")
  CountStepper = -1;
if (typeof(LeadingZero)=="undefined")
  LeadingZero = true;


CountStepper = Math.ceil(CountStepper);
if (CountStepper == 0)
  CountActive = false;
var SetTimeOutPeriod = (Math.abs(CountStepper)-1)*1000 + 990;
putspan(BackColor, ForeColor);
var dthen = new Date(TargetDate);
var dnow = new Date();
if(CountStepper>0)
  ddiff = new Date(dnow-dthen);
else
  ddiff = new Date(dthen-dnow);
gsecs = Math.floor(ddiff.valueOf()/1000);
CountBack(gsecs);
</script>

任何帮助我们实现这一点的人都会非常感激！

谢谢:)

Answer 1

我想这是你的回答，如果我没把你的问题弄清楚，请原谅。

DisplayFormat = "New Year in, {%%D%% Days, %%H%% Hours, %%M%% Minutes, %%S%% Seconds}.";

Answer 2

我知道你已经得到了简单的答案，但是如果你想让它更简洁，这里有一个jQuery插件：http://jsfiddle.net/chrisdanek/C59hN/1/

只需将一个包含日期的元素作为目标，它将被转换为计数器

$('p.counter').countdownCounter({
    format : 'New Year in %%D%% Days, %%H%% Hours, %%M%% Minutes, %%S%% Seconds!',
});

编辑：我已经为插件http://cou.io/code/countdown/创建了一个单独的页面，并添加了一些选项。