html倒计时 照着练习(抄袭)的

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<title>倒计时</title>
<link rel="stylesheet" type="text/css" href="倒计时.css" />
<script type="text/javascript">
    function daojishi(){
        var nowday=new Date();//现在
        var endday;//截止日期
        var endy=parseInt(document.getElementById("t1").value);
        var endmo=parseInt(document.getElementById("t2").value);
        var endd=parseInt(document.getElementById("t3").value);
        var endh=parseInt(document.getElementById("t4").value);
        var endm=parseInt(document.getElementById("t5").value);
        var ends=parseInt(document.getElementById("t6").value);
        //月份减1
        endday=new Date(endy,endmo-1,endd,endh,endm,ends);
        //endday=new Date(2014,11,8,17,55,0);
        //总秒数ts
        //document.getElementById("main").innerHTML=endday-nowday;
        var ts=Math.round((endday-nowday)/1000);
        //总天数
        var td=parseInt(ts/3600/24);
        //零几小时
        var eh=parseInt((ts%(3600*24))/3600);
        //零几分钟
        var em=parseInt((ts%3600)/60);
        //零几秒
        var es=ts%60;
        document.getElementById("box").innerHTML="还剩"+td+""+eh+""+em+""+es+"";
        
        
        if(ts<0){
            alert("倒计时结束");
            return;
        }
        window.setTimeout("daojishi()",1000);
        }
    
</script>
</head>

<body>
    <h1 align="center">请输入截止日期的年月日,时分秒</h1>
    <div id="main">
        <input type="text" id="t1"/><input type="text" id="t2"/><input type="text" id="t3"/><input type="text" id="t4"/><input type="text" id="t5"/><input type="text" id="t6"/></div>
    <button id="b" onclick="daojishi()">开始倒计时</button>
    <div id="box">
    
    </div>

</body>
</html>
原文地址:https://www.cnblogs.com/mimimimimi/p/4151665.html