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<title>THỬ THÁCH SỐ 12 - NHẬT KÝ DU HỌC</title>
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<div class="row justify-content-md-center" style="background-color: #ffd54f; box-sizing: border-box; margin: 0; padding: 10px;">
<div class="col-lg-auto col-sm-auto col-md-auto col-auto">
<h1 class="text-center">Bài thi kết thúc sau:</h1>
<ul class="list-group list-group-horizontal align-items-center">
<li style="display: inline-block;font-size: 1.5em;list-style-type: none;padding: 1em;text-transform: uppercase;">
<span class="text-center" id="hours" style=" display: block;font-size: 3rem;"></span>Hours</li>
<li style="display: inline-block;font-size: 1.5em;list-style-type: none;padding: 1em;text-transform: uppercase;">
<span class="text-center" id="minutes" style=" display: block;font-size: 3rem;"></span>Minutes</li>
<li style="display: inline-block;font-size: 1.5em;list-style-type: none;padding: 1em;text-transform: uppercase;">
<span class="text-center" id="seconds" style=" display: block;font-size: 3rem;"></span>Seconds</li>
</ul>
<h3 id="demo" class="text-center" style="color: red; "></h3>
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</div>
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<script src="js/scripts.js"></script>
<script>
var second = 1,
minute = second * 60,
hour = minute * 60,
day = hour * 24;
var countDown = new Date().getTime(),
x = setInterval(function() {
var now = new Date().getTime(),
distance = (countDown + 1800000 - now) / 1000;
if(distance > 0){
document.getElementById('hours').innerText = Math.floor((distance % (day)) / (hour)),
document.getElementById('minutes').innerText = Math.floor((distance % (hour)) / (minute)),
document.getElementById('seconds').innerText = Math.floor((distance % (minute)) / second);
}else{
document.getElementById("demo").innerHTML = "Đã Hết Giờ Làm Bài!";
}
//do something later when date is reached
//if (distance < 0) {
// clearInterval(x);
// 'IT'S MY BIRTHDAY!;
//}
}, second)
</script>
</body>
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<th rowspan="3"><iframe src="https://drive.google.com/file/d/1Y-nVcZLKXxEwhoE_dNR1p_cNXQGgZweb/preview" width="750" height="700" frameborder="0" marginheight="0" marginwidth="0">Đang tải…</iframe></th>
<td><iframe height="100" src="https://drive.google.com/file/d/1a_EkRdElLNHkG6M6p4-MZhXaGeLDDran/preview" width="500"></iframe></td>
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<td><iframe src="https://docs.google.com/forms/d/e/1FAIpQLSc69kvgLk2-Fb_4sQXzr2Reivrk1de5Nr2UQ58T9y96bOo6AA/viewform?embedded=true" width="500" height="580" frameborder="0" marginheight="0" marginwidth="0">Đang tải…</iframe>
<center><h3><font color="blue">Giáo viên: NHẬT KÝ DU HỌC </font> </h3></center>
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<tr> <th> <a href="https://www.facebook.com/groups/596195691106914/?ref=share">CLICK HERE</a> </th>
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<iframe src="" width="700" height="520" frameborder="0" marginheight="0" marginwidth="0">Đang tải…</iframe>