<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>JS + CSS Clock</title>
</head>
<body>
<div class="clock">
<div class="clock-face">
<div class="hand hour-hand"></div>
<div class="hand min-hand"></div>
<div class="hand second-hand"></div>
</div>
</div>
<style>
html {
background: #018DED url(https://unsplash.it/1500/1000?image=881&blur=5);
background-size: cover;
font-family: 'helvetica neue';
text-align: center;
font-size: 10px;
}
body {
margin: 0;
font-size: 2rem;
display: flex;
flex: 1;
min-height: 100vh;
align-items: center;
}
.clock {
width: 30rem;
height: 30rem;
border: 20px solid white;
border-radius: 50%;
margin: 50px auto;
position: relative;
padding: 2rem;
box-shadow:
0 0 0 4px rgba(0, 0, 0, 0.1),
inset 0 0 0 3px #EFEFEF,
inset 0 0 10px black,
0 0 10px rgba(0, 0, 0, 0.2);
}
.clock-face {
position: relative;
width: 100%;
height: 100%;
transform: translateY(-3px);
}
.hand {
width: 50%;
height: 6px;
background: black;
position: absolute;
top: 50%;
transition: all .05s;
transition-timing-function: ease-in-out;
transform: rotate(90deg);
transform-origin: 100%;
}
.second-hand {
background: white;
}
.min-hand {
background: yellow;
}
.hour-hand {
background: lightcoral;
}
</style>
<script>
const secondHand = document.querySelector('.second-hand');
const minHand = document.querySelector('.min-hand');
const hourHand = document.querySelector('.hour-hand');
function setDate() {
const now = new Date();
const seconds = now.getSeconds();
const secondsDegrees = (seconds * 6) + 90
secondHand.style.transform = 'rotate(' + secondsDegrees + 'deg)';
const mins = now.getMinutes();
const minsDegrees = (mins * 6) + ((seconds / 60) * 6) + 90
minHand.style.transform = 'rotate(' + minsDegrees + 'deg)';
const hours = now.getHours();
const hoursDegrees = (hours * 30) + ((mins / 60) * 30) + ((seconds / 3600) * 30) + 90
hourHand.style.transform = 'rotate(' + hoursDegrees + 'deg)';
console.log(hours + '时' + mins + '分' + seconds + '秒');
}
setInterval(setDate, 1000);
setDate();
</script>
</body>
</html>
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