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<html>
<head>
?<meta charset="utf-8" >
?<title>JS实现倒计时(天数,时,分,秒)</title>
?<link rel="stylesheet" type="text/css" href="../css/reset.css">
?<link rel="stylesheet" type="text/css" href="../css/index.css"></head>
?<script type="text/javascript" src="../js/jquery1.9.min.js"></script>
<body> ??
??<img src="../images/btlogo.png" class="logo">
???<div id="carousel">
???????<div id="tabpic">
???????????<div name="tablink" ><img src="../images/1.png"></div>
???????????<div name="tablink" ><img src="../images/2.png"></div>
???????????<div name="tablink" ><img src="../images/3.png"></div>
?????????<!-- ??<div name="tablink" ><img src="../images/4.png"></div> -->
???????</div> ?????
???</div>
?<div class="content">
????<div class="title1">
???????<span class="ccga"> CCGA </span>
???????<span class="ccganame">发布</span>
????</div>
???<div id="timer"></div>
???<div id="localtime"></div>
?</div>
?<audio controls="true" autoplay="true" loop="loop">
????<source src="../media/2.mp3" type="audio/mpeg" />
?</audio>
<!-- ?<embed src="media/1.mp3" hidden="true" autostart="true" loop="loop"> ??-->
?<script language="javascript" type="text/javascript"> ?
???function leftTimer(year,month,day,hour,minute,second){
?????var leftTime = (new Date(year,month-1,day,hour,minute,second)) - (new Date()); //计算剩余的毫秒数
?????var days = parseInt(leftTime / 1000 / 60 / 60 / 24 , 10); //计算剩余的天数
?????var hours = parseInt(leftTime / 1000 / 60 / 60 % 24 , 10); //计算剩余的小时
?????var minutes = parseInt(leftTime / 1000 / 60 % 60, 10);//计算剩余的分钟
?????var seconds = parseInt(leftTime / 1000 % 60, 10);//计算剩余的秒数
?????days = checkTime(days); ?????
?????hours = checkTime(hours);
?????minutes = checkTime(minutes);
?????seconds = checkTime(seconds);
?????setTimeout("leftTimer(2018,04,28,17,30,61)",1000); ??????
?????document.getElementById("timer").innerHTML = "倒计时: " +days+" 天 " + hours+" 时 " + minutes+" 分 "+seconds+" 秒 ";
???}
???function checkTime(i){ //将0-9的数字前面加上0，例1变为01
?????if(i<10)
?????{
???????i = "0" + i;
?????}
?????return i;
???}
???function div_tab(tabName){
???????var tabLinkArr=document.getElementsByName("tablink");
???????var tabPicArr=document.getElementById("tabpic").getElementsByTagName("div");
???????for(var i=0;i<tabLinkArr.length;i++){
???????????if(i==tabName){
???????????????tabLinkArr[i].style.color="#ff0000";
???????????????tabPicArr[i].style.display="block";
???????????} else{
???????????????tabLinkArr[i].style.color="#0000ff";
???????????????tabPicArr[i].style.display="none";
???????????}
???????}
???}
???var i=0;
???function auto_tab_div(){
???//如果切換到最後一張圖片則重新從第一張開始
???if(i>2){
???????i=0;
???}
???//每5秒自動讀取下一張圖片
???div_tab(i);
???????i++;
?????setTimeout(auto_tab_div,5000);
???}
??
??$(leftTimer);
??$(auto_tab_div);
?
function showLocale(objD){
?var str,colorhead,colorfoot;
?var yy = objD.getYear();
?if(yy<1900) yy = yy+1900;
?var MM = objD.getMonth()+1;
?if(MM<10) MM = ‘0‘ + MM;
?var dd = objD.getDate();
?if(dd<10) dd = ‘0‘ + dd;
?var hh = objD.getHours();
?if(hh<10) hh = ‘0‘ + hh;
?var mm = objD.getMinutes();
?if(mm<10) mm = ‘0‘ + mm;
?var ss = objD.getSeconds();
?if(ss<10) ss = ‘0‘ + ss;
?var ww = objD.getDay();
?if ?( ww==0 ) ?colorhead="<font>";
?if ?( ww > 0 && ww < 6 ) ?colorhead="<font>";
?if ?( ww==6 ) ?colorhead="<font>";
?if ?(ww==0) ?ww="星期日";
?if ?(ww==1) ?ww="星期一";
?if ?(ww==2) ?ww="星期二";
?if ?(ww==3) ?ww="星期三";
?if ?(ww==4) ?ww="星期四";
?if ?(ww==5) ?ww="星期五";
?if ?(ww==6) ?ww="星期六";
?colorfoot="</font>"
?str = colorhead + "当前时间: " + yy + "年" + MM + "月" + dd + "日" + hh + "时" + mm + "分" + ss + "秒 " + ww + colorfoot;
?return(str);
}
function tick(){
?var today;
?today = new Date();
?document.getElementById("localtime").innerHTML = showLocale(today);
?window.setTimeout("tick()", 1000);
}
tick();
</script></body>
</html>
JS实现倒计时(天数,时,分,秒)
原文地址：https://www.cnblogs.com/quitpoison/p/10795532.html