一个超简单的倒计时小功能。 拿过来就能用(记得更换jq)
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<meta http-equiv="X-UA-Compatible" content="ie=edge">
<title>倒计时demo</title>
</head>
<body>
倒计时：<span id="time">00 : 00 : 00</span>
<script src="https://quhongqiang.com/js/jquery.min.js"></script>
<script>
$(function(){
countDown("900", "#time"); // 倒计时XX秒
})
function countDown(times, id){
var hour, minute, second,
watch = $(id),
timer = setInterval(function(){
if (times > 0) {
times -= 1;
hour = Math.floor((times / 3600) % 24);
minute = Math.floor((times / 60) % 60);
second = Math.floor(times % 60);
hour = hour<10?"0"+hour:hour; // 计算小时
minute = minute<10?"0"+minute:minute; // 计算分钟
second = second<10?"0"+second:second; // 计算秒杀
watch.text(hour).append(" : ").append(minute).append(" : ").append(second);
} else {
clearInterval(timer);
}
}, 1000);
}
</script>
</body>
</html>
