<!DOCTYPE html><html><head><meta charset="UTF-8"><title>js test</title><script>/*时间倒计时插件TimeDown.js*/function TimeDown(id, endDateStr,times) { ???//结束时间 ???var endDate = new Date(endDateStr); ???//当前时间 ???var nowDate = new Date(); ???//相差的总秒数 ???var totalSeconds = parseInt((endDate - nowDate) / 1000); ???//天数 ???var days = Math.floor(totalSeconds / (60 * 60 * 24)); ???//取模（余数） ???var modulo = totalSeconds % (60 * 60 * 24); ???//小时数 ???var hours = Math.floor(modulo / (60 * 60)); ???modulo = modulo % (60 * 60); ???//分钟 ???var minutes = Math.floor(modulo / 60); ???//秒 ???var seconds = modulo % 60; ???//输出到页面 ???document.getElementById(id).innerHTML = "还剩:" + days + "天" + hours + "小时" + minutes + "分钟" + seconds + "秒"; ???//延迟一秒执行自己 ???if(times>minutes){ ???times--; ???//修改数据库时间 ???console.log("写入数据库数据:" + times); ???} ???setTimeout(function () { ???????TimeDown(id,endDateStr,times); ???}, 1000)}</script></head><body> <form id="form1" runat="server"> ???????<div id="show"> ???????</div> ???????<script type="text/javascript"> ???????var times = 15; ???????//获取当前时间 ???????var date = new Date(); ???????//修改分钟 ???????date.setMinutes(date.getMinutes()+times); ???????????TimeDown("show",date,times); ???????</script> ???</form></body></html>
JS倒计时代码
原文地址：https://www.cnblogs.com/c-c-c-c/p/10119830.html