带倒计时日期的HTML/Javascript反向进度条是一种动态显示剩余时间的进度条。它通常用于网站或应用程序中,以直观地展示某个事件或任务的剩余时间。
以下是一个简单的HTML/Javascript示例代码,展示如何实现一个带倒计时日期的反向进度条:
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<title>Reverse Countdown Progress Bar</title>
<style>
.progress-container {
width: 100%;
height: 30px;
background-color: #ddd;
position: relative;
}
.progress-bar {
background-color: #4CAF50;
height: 100%;
position: absolute;
width: 100%;
transition: width 1s;
}
</style>
</head>
<body>
<div class="progress-container">
<div class="progress-bar" id="progressBar"></div>
</div>
<script>
function updateProgressBar(endDate) {
const now = new Date().getTime();
const distance = endDate - now;
const days = Math.floor(distance / (1000 * 60 * 60 * 24));
const hours = Math.floor((distance % (1000 * 60 * 60 * 24)) / (1000 * 60 * 60));
const minutes = Math.floor((distance % (1000 * 60 * 60)) / (1000 * 60));
const seconds = Math.floor((distance % (1000 * 60)) / 1000);
const progressBar = document.getElementById('progressBar');
const progress = (distance / (1000 * 60 * 60 * 24 * 30)) * 100; // Assuming 30 days for full progress
progressBar.style.width = `${progress}%`;
if (distance < 0) {
clearInterval(interval);
progressBar.style.width = '0%';
}
}
const endDate = new Date('2023-12-31T23:59:59').getTime();
const interval = setInterval(() => updateProgressBar(endDate), 1000);
</script>
</body>
</html>
setInterval
没有正确设置,或者updateProgressBar
函数没有正确执行。setInterval
的时间间隔设置正确,并且updateProgressBar
函数逻辑正确。updateProgressBar
函数中添加逻辑,当倒计时结束时,停止setInterval
并重置进度条。希望这些信息对你有所帮助!
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