我在一个页面上构建多个倒计时时钟。倒计时时钟的数量每天都在变化，因此我需要从php中的“while”代码中多次调用javascript来生成不同的时钟。以下代码有效，但它基于在开始之前知道需要多少个时钟：
<script language="javascript" src="countdown.js"></script>
<script language="javascript">
var cd1 = new countdown('cd1');
cd1.Div = "clock1";
cd1.TargetDate = "<?php echo "$clocktime"; ?>";
cd1.DisplayFormat = "%%D%% days, %%H%% hours, %%M%% minutes, %%S%% seconds until event AAA happens";
</script>
<div id="clockwrapper"><div id="clock1">[clock]</div></div>
<script language="javascript" src="countdown.js"></script>
<script language="javascript">
var cd2 = new countdown('cd2');
cd2.Div = "clock2";
cd2.TargetDate = "02/01/2011 5:30:30 PM";
cd2.DisplayFormat = "%%D%% days, %%H%% hours, %%M%% minutes, %%S%% seconds until event BBB happens...";
</script>
<div id="clockwrapper"><div id="clock2">[clock]</div></div>
因此，如果我继续调用上面的javascript（其中包含cd1的代码），之前的所有“cd1”时钟都会更改为最新的时钟，因为它正被覆盖。不知何故，我需要从我在php中的“while”循环中调用javascript并让cd1变为cd2，然后cd3使得时钟按照它们的预期工作。 我该怎么做呢？我不知道如何多次调用javascript并在javascript中增加变量cd1。我试过这样的事情，却无法让它发挥作用。
$id=mysql_result($result,$i,"id");
while($id){
$cd = ("$cd"."$id");
?>
<script language="javascript" src="countdown.js"></script>
<script language="javascript">
var <?php echo "$cd"; ?> = new countdown('<?php echo "$cd"; ?>');
....
</script>
<div id="clockwrapper"><div id="<?php echo "$cd"; ?>">[clock]</div></div>
<?php
$id=mysql_result($result,$i,"id");
}
?>
肯定有一些简单的解决方法，我不知道。
------------------------------- EDIT --------------- --------------------
在下面添加countdown.js可能会有所帮助
/*
Author: Robert Hashemian (http://www.hashemian.com/)
Modified by: Munsifali Rashid (http://www.munit.co.uk/)
*/
function countdown(obj)
{
this.obj = obj;
this.Div = "clock";
this.BackColor = "white";
this.ForeColor = "black";
this.TargetDate = "12/31/2020 5:00 AM";
this.DisplayFormat = "%%D%% Days, %%H%% Hours, %%M%% Minutes, %%S%% Seconds.";
this.CountActive = true;
this.DisplayStr;
this.Calcage = cd_Calcage;
this.CountBack = cd_CountBack;
this.Setup = cd_Setup;
}
function cd_Calcage(secs, num1, num2)
{
s = ((Math.floor(secs/num1))%num2).toString();
if (s.length < 2) s = "0" + s;
return (s);
}
function cd_CountBack(secs)
{
this.DisplayStr = this.DisplayFormat.replace(/%%D%%/g, this.Calcage(secs,86400,100000));
this.DisplayStr = this.DisplayStr.replace(/%%H%%/g, this.Calcage(secs,3600,24));
this.DisplayStr = this.DisplayStr.replace(/%%M%%/g, this.Calcage(secs,60,60));
this.DisplayStr = this.DisplayStr.replace(/%%S%%/g, this.Calcage(secs,1,60));
document.getElementById(this.Div).innerHTML = this.DisplayStr;
if (this.CountActive) setTimeout(this.obj +".CountBack(" + (secs-1) + ")", 990);
}
function cd_Setup()
{
var dthen = new Date(this.TargetDate);
var dnow = new Date();
ddiff = new Date(dthen-dnow);
gsecs = Math.floor(ddiff.valueOf()/1000);
this.CountBack(gsecs);
}
由于
答案 0 :(得分：1)
这是一个使用可以正常工作的脚本的版本。取消注释servertimestring以使其从您的php服务器运行 - 当您满意时也删除调试模式
我所做的更改是在页面的正文部分
<html>
<head>
<style style="text/css">
.lcdstyle{ /*Example CSS to create LCD countdown look*/
background-color:black;
color:lime;
font: bold 18px MS Sans Serif;
padding: 3px;
}
.lcdstyle sup{ /*Example CSS to create LCD countdown look*/
font-size: 80%
}
</style>
<script type="text/javascript">
/***********************************************
* Universal Countdown script- © Dynamic Drive (http://www.dynamicdrive.com)
* This notice MUST stay intact for legal use
* Visit http://www.dynamicdrive.com/ for this script and 100s more.
***********************************************/
function cdLocalTime(container, servermode, offsetMinutes, targetdate, debugmode){
if (!document.getElementById || !document.getElementById(container)) return
this.container=document.getElementById(container)
//var servertimestring=(servermode=="server-php")? '<? print date("F d, Y H:i:s", time())?>' : (servermode=="server-ssi")? '<!--#config timefmt="%B %d, %Y %H:%M:%S"--><!--#echo var="DATE_LOCAL" -->' : '<%= Now() %>'
var servertimestring = "February 3, 2011 11:30:00";
this.localtime=this.serverdate=new Date(servertimestring)
this.targetdate=new Date(targetdate)
this.debugmode=(typeof debugmode!="undefined")? 1 : 0
this.timesup=false
this.localtime.setTime(this.serverdate.getTime()+offsetMinutes*60*1000) //add user offset to server time
this.updateTime()
}
cdLocalTime.prototype.updateTime=function(){
var thisobj=this
this.localtime.setSeconds(this.localtime.getSeconds()+1)
setTimeout(function(){thisobj.updateTime()}, 1000) //update time every second
}
cdLocalTime.prototype.displaycountdown=function(baseunit, functionref){
this.baseunit=baseunit
this.formatresults=functionref
this.showresults()
}
cdLocalTime.prototype.showresults=function(){
var thisobj=this
var debugstring=(this.debugmode)? "<p style=\"background-color: #FCD6D6; color: black; padding: 5px\"><big>Debug Mode on!</big><br /><b>Current Local time:</b> "+this.localtime.toLocaleString()+"<br />Verify this is the correct current local time, in other words, time zone of count down date.<br /><br /><b>Target Time:</b> "+this.targetdate.toLocaleString()+"<br />Verify this is the date/time you wish to count down to (should be a future date).</p>" : ""
var timediff=(this.targetdate-this.localtime)/1000 //difference btw target date and current date, in seconds
if (timediff<0){ //if time is up
this.timesup=true
this.container.innerHTML=debugstring+this.formatresults()
return
}
var oneMinute=60 //minute unit in seconds
var oneHour=60*60 //hour unit in seconds
var oneDay=60*60*24 //day unit in seconds
var dayfield=Math.floor(timediff/oneDay)
var hourfield=Math.floor((timediff-dayfield*oneDay)/oneHour)
var minutefield=Math.floor((timediff-dayfield*oneDay-hourfield*oneHour)/oneMinute)
var secondfield=Math.floor((timediff-dayfield*oneDay-hourfield*oneHour-minutefield*oneMinute))
if (this.baseunit=="hours"){ //if base unit is hours, set "hourfield" to be topmost level
hourfield=dayfield*24+hourfield
dayfield="n/a"
}
else if (this.baseunit=="minutes"){ //if base unit is minutes, set "minutefield" to be topmost level
minutefield=dayfield*24*60+hourfield*60+minutefield
dayfield=hourfield="n/a"
}
else if (this.baseunit=="seconds"){ //if base unit is seconds, set "secondfield" to be topmost level
var secondfield=timediff
dayfield=hourfield=minutefield="n/a"
}
this.container.innerHTML=debugstring+this.formatresults(dayfield, hourfield, minutefield, secondfield)
setTimeout(function(){thisobj.showresults()}, 1000) //update results every second
}
/////CUSTOM FORMAT OUTPUT FUNCTIONS BELOW//////////////////////////////
//Create your own custom format function to pass into cdLocalTime.displaycountdown()
//Use arguments[0] to access "Days" left
//Use arguments[1] to access "Hours" left
//Use arguments[2] to access "Minutes" left
//Use arguments[3] to access "Seconds" left
//The values of these arguments may change depending on the "baseunit" parameter of cdLocalTime.displaycountdown()
//For example, if "baseunit" is set to "hours", arguments[0] becomes meaningless and contains "n/a"
//For example, if "baseunit" is set to "minutes", arguments[0] and arguments[1] become meaningless etc
//1) Display countdown using plain text
function formatresults(){
if (this.timesup==false){//if target date/time not yet met
var displaystring="<span style='background-color: #CFEAFE'>"+arguments[1]+" hours "+arguments[2]+" minutes "+arguments[3]+" seconds</span> left until launch time"
}
else{ //else if target date/time met
var displaystring="Launch time!"
}
return displaystring
}
//2) Display countdown with a stylish LCD look, and display an alert on target date/time
function formatresults2(){
if (this.timesup==false){ //if target date/time not yet met
var displaystring="<span class='lcdstyle'>"+arguments[0]+" <sup>days</sup> "+arguments[1]+" <sup>hours</sup> "+arguments[2]+" <sup>minutes</sup> "+arguments[3]+" <sup>seconds</sup></span> left until launch time"
}
else{ //else if target date/time met
var displaystring="" //Don't display any text
alert("Launch time!") //Instead, perform a custom alert
}
return displaystring
}
</script>
</head>
<body>
<script>
var clockTimes = [
"February 4, 2011 11:11:00",
"April 22, 2011 22:22:00",
"December 23, 2011 23:23:00"
];
var cd=[]
for (var i=0;i<clockTimes.length;i++) {
document.write('<div id="cdcontainer'+i+'"></div>');
//cdLocalTime("ID_of_DIV_container", "server_mode", LocaltimeoffsetMinutes, "target_date", "opt_debug_mode")
//cdLocalTime.displaycountdown("base_unit", formatfunction_reference)
//Note: "launchdate" should be an arbitrary but unique variable for each instance of a countdown on your page:
cd[i]=new cdLocalTime("cdcontainer"+i, "server-php", 0, clockTimes[i], "debugmode")
cd[i].displaycountdown("days", formatresults2)
}
</script>
答案 1 :(得分：0)
试试这个
<script language="javascript" src="countdown.js"></script>
<script language="javascript">
var numclocks = <?php echo $clocks; ?>;
var clockTime = "<?php echo $clocktime; ?>";
var cd=[]
for (var i=0;i<numclocks;i++) {
cd[i] = new countdown('cd'+i);
cd[i].Div = "clock"+i;
cd[i].TargetDate = clockTime;
cd[i].DisplayFormat = "%%D%% days, %%H%% hours, %%M%% minutes, %%S%% seconds until event AAA happens";
document.write('<div id="clockwrapper'+i+'"><div id="clock'+i+'">[clock]</div></div>')
cd[i].Setup(); // but we still need to fix the setTimout in a closure
}
</script>