js 倒计时实现

来源：互联网发布：中国网络监控编辑：程序博客网时间：2024/06/16 17:25

<!doctype html> <html> <head> <meta charset="utf-8">  </head>  <body>  <DIV id="CountMsg" class="HotDate"> <span id="t_d">00天</span> <span id="t_h">00时</span> <span id="t_m">00分</span> <span id="t_s">00秒</span> </DIV> <script type="text/javascript">var EndTime= new Date(); //获取当前时间var b = 1;    EndTime.setMinutes(EndTime.getMinutes() + b, EndTime.getSeconds(), 0);//截止时间function getRTime(){ //倒计时函数var NowTime = new Date();//获取当前时间var t =EndTime.getTime() - NowTime.getTime()//剩余时间，1秒=1000毫秒 var d=Math.floor(t/1000/60/60/24); var h=Math.floor(t/1000/60/60%24); var m=Math.floor(t/1000/60%60); var s=Math.floor(t/1000%60);  document.getElementById("t_d").innerHTML = t + "天";document.getElementById("t_h").innerHTML = h + "时"; document.getElementById("t_m").innerHTML = m + "分"; document.getElementById("t_s").innerHTML = s + "秒";if(t<0){document.getElementById("t_d").innerHTML = 3 + "天";}} setInterval(getRTime,1000);//每秒运行一次倒计时函数</script> </body> </html>

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