<html> <body> <input type="text" value="" id="date2"> <input type="button" onclick="go(document.getElementById('date2').value);" value="开始"> <div id="timer">fdd</div> <script type="text/javascript"> // 倒计时 var _ordertimer = null; var data=new Date(); document.getElementById("date2").value=data.getFullYear()+'-'+(data.getMonth()+1)+'-'+data.getDate()+' '+data.getHours()+':'+data.getMinutes()+':'+data.getSeconds();//当前时间 function leftTimer(enddate) { var leftTime = (new Date(enddate)) - 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);
if(days > 0 && hours >= 0 && minutes >= 0 && seconds >= 0){
console.log(1111);
$(ele).html(days + "天 " + hours + ":" + minutes + ":" + seconds);
}
else if(days==0 && !(hours <= 0 && minutes <= 0 && seconds <= 0)){
console.log(2222);
$(ele).html(hours + ":" + minutes + ":" + seconds);
}
else{
console.log(3333);
$(ele).html('已结束');
window.clearInterval(_ordertimer);
_ordertimer = null;
}
} 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 go(v){ var date1=new Date(),data2=new Date(v); if(data2<date1)return;//设置的时间小于现在时间退出 _ordertimer = setInterval(function(){leftTimer(data2)}, 1000); } </script> </body> </html>
https://www.jb51.net/article/97501.htm