我正在尝试编写一个JS计时器(仅计数到无限),基于PHP变量。不幸的是,该变量是不可编辑的(一旦获取,可以对其进行处理,但无法更改获取的形式,因为它来自数据库软件写入,我无法更改该软件)。我只得到秒数(用户上次访问多少秒前等)并希望以“(X天,X小时,X分钟,X秒)”的格式显示。
然后(包括所有计数器代码):
我已经有了计时器和PHP代码,但问题是最佳解决方案是什么。我是否尝试将秒数转换为PHP中的日期,然后让JS完成所有其他工作,或者我更改JS,使其接受秒数,然后进行倒计时。此外,我应该如何做到这一点?
我对计数器的代码:
文档中的JS,传递变量以便PHP可以轻松更改这些变量:
<script type="text/javascript" language="JavaScript">
TargetDate = "09/21/2012 5:00";
CountActive = true;
</script>
然后(包括所有计数器代码):
<script type="text/javascript" language="JavaScript" src="js/time.js"></script>
如上所述的.js文件:
function calcage(secs, num1, num2) {
s = ((Math.floor(secs/num1))%num2).toString();
if (LeadingZero && s.length < 2)
s = "0" + s;
return s;
}
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'></span>");
}
if (typeof(BackColor)=="undefined")
BackColor = "white";
if (typeof(ForeColor)=="undefined")
ForeColor= "#2A8827";
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 = "no data";
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 + 1000;
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);