兼容不错的动态倒计时脚本

2014-05-01 03:06:15 -0400

此代码仅供参考

代码说明

一个倒计时脚本特效，同样是基于javaScript来实现，来自国外JS爱好者网站，注释也是E文，设置及用法都有注释，倒计时时间适合根据系统时间来倒计，字体颜色也是可以调整的，希望大家喜欢。本代码兼容IE系统、火狐还有Chrome等浏览器。

html代码

<style style="text/css">
.lcdstyle{
background-color:black;
color:yellow;
font: bold 18px MS Sans Serif;
padding: 3px;
}
.lcdstyle sup{
font-size: 80%
}
</style>
<script type="text/javascript">
function cdtime(container, targetdate){
if (!document.getElementById || !document.getElementById(container)) return
this.container=document.getElementById(container)
this.currentTime=new Date()
this.targetdate=new Date(targetdate)
this.timesup=false
this.updateTime()
}
cdtime.prototype.updateTime=function(){
var thisobj=this
this.currentTime.setSeconds(this.currentTime.getSeconds()+1)
setTimeout(function(){thisobj.updateTime()}, 1000) //update time every second
}
cdtime.prototype.displaycountdown=function(baseunit, functionref){
this.baseunit=baseunit
this.formatresults=functionref
this.showresults()
}
cdtime.prototype.showresults=function(){
var thisobj=this
var timediff=(this.targetdate-this.currentTime)/1000
if (timediff<0){
this.timesup=true
this.container.innerHTML=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"){
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=this.formatresults(dayfield, hourfield, minutefield, secondfield)
setTimeout(function(){thisobj.showresults()}, 1000) //update results every second
}
function formatresults(){
if (this.timesup==false){//if target date/time not yet met
var displaystring=arguments[0]+" days "+arguments[1]+" hours "+arguments[2]+" minutes "+arguments[3]+" seconds left until March 23, 2009 18:25:00"
}
else{ //else if target date/time met
var displaystring="Future date is here!"
}
return displaystring
}
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 this Christmas"
}
else{ //else if target date/time met
var displaystring="" //Don't display any text
alert("Christmas is here!") //Instead, perform a custom alert
}
return displaystring
}
</script>

<div id="countdowncontainer"></div>
<br />
<div id="countdowncontainer2"></div>
<script type="text/javascript">
var futuredate=new cdtime("countdowncontainer", "March 23, 2012 18:25:00")
futuredate.displaycountdown("days", formatresults)
var currentyear=new Date().getFullYear()
var thischristmasyear=(new Date().getMonth()>=11 && new Date().getDate()>25)? currentyear+1 : currentyear
var christmas=new cdtime("countdowncontainer2", "December 25, "+thischristmasyear+" 0:0:00")
christmas.displaycountdown("days", formatresults2)
</script>

代码演示

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