简单易用的倒计时js代码

<！doctype html><html><head><meta charset="utf-8"><title>简单易用的倒计时js代码</title><style>*{ margin:0; padding:0; list-style:none;}body{ font-size:18px; text-align:center;}.time{ height:30px; padding:200px;}</style></head><body><div class="time"><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>function GetRTime（）{var EndTime= new Date（"2014/09/20 00:00:00"）;var NowTime = new Date（）;var t =EndTime.getTime（） - NowTime.getTime（）;var d=0;var h=0;var m=0;var s=0;if（t>=0）{d=Math.floor（t/1000/60/60/24）;h=Math.floor（t/1000/60/60%24）;m=Math.floor（t/1000/60%60）;s=Math.floor（t/1000%60）;}document.getElementById（"t_d"）.innerHTML = d + "天";document.getElementById（"t_h"）.innerHTML = h + "时";document.getElementById（"t_m"）.innerHTML = m + "分";document.getElementById（"t_s"）.innerHTML = s + "秒";}setInterval（GetRTime,0）;</script></body></html>