Project 03: 全屏时钟 (JS)
完整代码
html
<!DOCTYPE html>
<html lang="zh-CN">
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<title>时间显示</title>
<style>
body {
margin: 0;
padding: 0;
font-size: 30vw;
font-family: Consolas;
color: white;
}
.time {
--percent: 0%;
min-height: 100vh;
display: flex;
justify-content: center;
align-items: center;
background-image: linear-gradient(to right, #006400, #006400 calc(var(--percent) - 1%), #004B00 calc(var(--percent) + 1%));
}
</style>
</head>
<body>
<div id="app" class="time"></div>
<script>
const appElement = document.getElementById('app');
function pad(n) {
return n < 10 ? `0${n}` : `${n}`;
}
function updateTime() {
const now = new Date();
const seconds = now.getSeconds();
const minutes = now.getMinutes();
const hours = now.getHours();
const percent = (seconds / 60 * 100).toFixed(2) + '%';
const timeString = `${pad(hours)}:${pad(minutes)}`;
appElement.textContent = timeString;
appElement.style.setProperty('--percent', percent);
}
setInterval(updateTime, 335);
// Initial call to set the time immediately on page load
updateTime();
</script>
</body>
</html>