源码：
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<title>霓虹灯数字时钟</title>
<script src="https://cdnjs.cloudflare.com/ajax/libs/gsap/3.9.1/gsap.min.js"></script>
<style>
*{margin:0;padding:0;box-sizing:border}body{display:flex;justify-content:center;align-items:center;min-height:100vh;overflow:hidden;background:#2f363e}.clock{position:relative;width:280px;height:280px;display:flex;justify-content:center;align-items:center;scale:2;box-shadow:inset 5px 5px 25px rgba(0,0,0,0.25);border-radius:50%}#time{position:relative;width:250px;height:250px;display:flex;justify-content:center;align-items:center}#time .circle{position:absolute;display:flex;justify-content:center;align-items:center}#time .circle svg{position:relative;transform:rotate(270deg)}#time .circle:nth-child(1) svg{width:250px;height:250px}#time .circle:nth-child(2) svg{width:210px;height:210px}#time .circle:nth-child(3) svg{width:170px;height:170px}#time .circle svg circle{width:100%;height:100%;fill:transparent;stroke-width:5;stroke:var(--clr);transform:translate(5px,5px);opacity:0.25}#time .circle:nth-child(1) svg circle{stroke-dasharray:760;stroke-dashoffset:760}#time .circle:nth-child(2) svg circle{stroke-dasharray:630;stroke-dashoffset:630}#time .circle:nth-child(3) svg circle{stroke-dasharray:510;stroke-dashoffset:510}.dots{position:absolute;width:100%;height:100%;display:flex;align-items:flex-start;justify-content:center;z-index:10}.dots::before{content:"";position:absolute;top:-3px;width:15px;height:15px;background:var(--clr);border-radius:50%;box-shadow:0 0 20px var(--clr),0 0 40px var(--clr),0 0 60px var(--clr),0 0 80px var(--clr)}.niddles{position:absolute;width:200px;height:200px;border-radius:50%;display:flex;justify-content:center;align-items:flex-start;z-index:10}.niddles i{position:absolute;width:2px;background:var(--clr2);height:50%;opacity:0.75;border-radius:6px;transform-origin:bottom;transform:scaleY(0.5)}.niddles.niddles2{width:170px;height:170px;z-index:9}.niddles.niddles2 i{width:3px}.niddles.niddles3{width:140px;height:140px;z-index:8}.niddles.niddles3 i{width:4px}#time span{position:absolute;inset:55px;text-align:center;color:#999;font-family:Cambria,Cochin,Georgia,Times,"Times New Roman",serif;transform:rotate(calc(30deg * var(--i)))}#time span b{font-size:0.75em;font-weight:500;display:inline-block;transform:rotate(calc(-30deg * var(--i)))}
</style>
</head>
<body>
<div class="clock">
<div id="time">
<div class="circle" style="--clr:#ff2972">
<div class="dots sec_dot"></div>
<svg>
<circle cx="120" cy="120" r="120" id="ss"></circle>
</svg>
</div>
<div class="circle" style="--clr:#fee800">
<div class="dots min_dot"></div>
<svg>
<circle cx="100" cy="100" r="100" id="mm"></circle>
</svg>
</div>
<div class="circle" style="--clr:#04fc43">
<div class="dots hr_dot"></div>
<svg>
<circle cx="80" cy="80" r="80" id="hh"></circle>
</svg>
</div>
<div class="niddles" style="--clr2:#ff2972;" id="sc"><i></i></div>
<div class="niddles niddles2" style="--clr2:#fee800;" id="mn"><i></i></div>
<div class="niddles niddles3" style="--clr2:#04fc43;" id="hr"><i></i></div>
<span style="--i:1;"><b>1</b></span>
<span style="--i:2;"><b>2</b></span>
<span style="--i:3;"><b>3</b></span>
<span style="--i:4;"><b>4</b></span>
<span style="--i:5;"><b>5</b></span>
<span style="--i:6;"><b>6</b></span>
<span style="--i:7;"><b>7</b></span>
<span style="--i:8;"><b>8</b></span>
<span style="--i:9;"><b>9</b></span>
<span style="--i:10;"><b>10</b></span>
<span style="--i:11;"><b>11</b></span>
<span style="--i:12;"><b>12</b></span>
</div>
</div>
</body>
<script>
setInterval(()=>{let hh=document.getElementById("hh");let mm=document.getElementById("mm");let ss=document.getElementById("ss");let sec_dot=document.querySelector(".sec_dot");let min_dot=document.querySelector(".min_dot");let hr_dot=document.querySelector(".hr_dot");let hr=document.getElementById("hr");let mn=document.getElementById("mn");let sc=document.getElementById("sc");let h=new Date().getHours();let m=new Date().getMinutes();let s=new Date().getSeconds();hh.style.strokeDashoffset=510-(510*h)/12;mm.style.strokeDashoffset=630-(630*m)/60;ss.style.strokeDashoffset=760-(760*s)/60;sec_dot.style.transform=`rotateZ(${s*6}deg)`;min_dot.style.transform=`rotateZ(${m*6}deg)`;hr_dot.style.transform=`rotateZ(${h*30}deg)`;hr.style.transform=`rotateZ(${h*30}deg)`;mn.style.transform=`rotateZ(${m*6}deg)`;sc.style.transform=`rotateZ(${s*6}deg)`});
</script>
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