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<!DOCTYPE html>
<html>
<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</title>
<script>
function countTime (){
var currentDate = new Date();
var nowStamp = currentDate.getTime()
var timeStr = '2019/01/01 00:00:00';
var andDate = new Date(timeStr);
var andStamp = andDate.getTime();
var leftTime = andDate - nowStamp;
var day;
var hour;
var minute;
var second;
if (leftTime >= 0) {
day = math.floor(leftTime/1000/60/60/24);
hour = math.floor(leftTime/1000/60/60%24);
minute = math.floor(leftTime/1000/60%60);
second = math.floor(leftTime/1000%60);
}
document.getElementById('day').innerHTML = '<span style="color:red">'+ day + '</span>天';
document.getElementById('hour').innerHTML = '<span style="color:red">'+ hour + '</span>时';
document.getElementById('minute').innerHTML = '<span style="color:red">'+ minute + '</span>分';
document.getElementById('second').innerHTML = '<span style="color:red">'+ second + '</span>秒';
setTimeout(countTime, 1000);
}
</script>
</head>
<body onload ="countTime()">
<p style="font-size:1em">距离2019元旦放假还有：</p>
<div>
<span id="day">00</span>
<span id="hour">00</span>
<span id="minute">00</span>
<span id="second">00</span>
</div>
</body>
</html>
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