requestAnimationFrame实现倒计时示例代码-html代码-BFW代码库

requestAnimationFrame实现倒计时示例代码

代码语言：html

所属分类：其他

代码描述：requestAnimationFrame实现倒计时示例代码

下面为部分代码预览，完整代码请点击下载或在bfwstudio webide中打开

<!DOCTYPE html>
<html lang="en">

<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Countdown Timer</title>
    <style>
        /* 可以添加一些自定义的样式 */
    </style>
</head>

<body>
    <div id="countdown" style="font-size: 24px; text-align: center; margin-top: 50px;"></div>

    <script>
        function startCountdown(durationInSeconds) {
            let startTime = Date.now();

            function updateCountdown() {
                let currentTime = Date.now();
                let elapsedTime = (currentTime - startTime) / 1000; // 转换为秒

                let remainingTime = Math.max(durationInSeconds - elapsedTime, 0);
                let minutes = Math.floor(remainingTime / 60);
                let seconds = Math.floor(remainingTime % 60);

                // 将分钟和秒数格式化为两位数
                minutes = minutes < 10 ? "0" + minutes : minutes;
                seconds =.........完整代码请登录后点击上方下载按钮下载查看