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比较有趣的倒计时效果，像贪吃蛇一样。
640.gif
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<title>有趣的倒计时</title>
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<script src="https://libs.baidu.com/jquery/2.1.4/jquery.min.js"></script>
<style>
body{height:100vh;display:flex;align-items:center;justify-content:center;background:#000000}.svg{width:400px}@media (max-height:400px){.svg{width:250px}}.svg .paths{display:none}.svg .circle{fill:#ffffff}.svg.gooey .circles{}.controller{position:fixed;top:20px;right:20px;color:#000;font-family:sans-serif;font-size:10px;text-transform:uppercase;padding:15px 20px 12px 15px;background:#fff;border-radius:20px}@media (max-height:400px){.controller{top:10px;right:10px}}.controller span{display:inline-block;position:relative;z-index:1}.controller span:before{content:"";position:absolute;top:-3px;left:-22px;width:16px;height:16px;background:red;border-radius:3px;-webkit-user-select:none;-moz-user-select:none;-ms-user-select:none;user-select:none;cursor:pointer}.controller span:after{content:"";background:#fff;position:absolute;z-index:1;top:1px;left:-18px;width:8px;height:8px;border-radius:2px;opacity:0;transition:opacity 0.2s ease-out}.controller input{opacity:0.01;height:0}.controller input:checked+span:after{opacity:1}
</style>
</head>
<body>
<svg viewbox="0 0 256 256" class="svg gooey">
<defs>
<filter id="filter">
<fegaussianblur in="SourceGraphic" stddeviation="10" result="blur"></fegaussianblur>
<fecolormatrix in="blur" mode="matrix" values="1 0 0 0 0 0 1 0 0 0 0 0 1 0 0 0 0 0 20 -14"
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<fecomposite in="SourceGraphic" in2="filter" operator="atop"></fecomposite>
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<path id="path_1" class="path" d="M87.9,79.2c1.1-0.4,53.7-39.2,54.9-39.1v180.5"></path>
<path id="path_2" class="path"
d="M81.7,85.7c-1.4-67,112.3-55.1,90.2,11.6c-12.6,32-70.6,83.7-88.8,113.7h105.8"></path>
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</path>
<path id="path_4" class="path" d="M161.9,220.8 161.9,41 72.6,170.9 208.2,170.9"></path>
<path id="path_5" class="path" d="M183.2,43.7H92.1l-10,88.3c0,0,18.3-21.9,51-21.9s49.4,32.6,49.4,48.2c0,22.2-9.5,57-52.5,57
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<path id="path_6" class="path" d="M177.4,71.6c0,0-4.3-30.3-44.9-30.3s-57.9,45.6-57.9,88.8s9,86.5,56.2,86.5
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<path id="path_7" class="path" d="M73.3,43.7 177.7,43.7 97.9,220.6 "></path>
<path id="path_8" class="path"
d="M126.8,122.8c0,0,48.2-1.3,48.2-42.2s-48.2-39.9-48.2-39.9s-45.9,0-45.9,40.9 c0,20.5,18.8,41.2,46.9,41.2c29.6,0,54.9,18,54.9,47.2c0,0,2,44.9-54.2,44.9c-55.5,0-54.2-43.9-54.2-43.9s-0.3-47.9,53.6-47.9">
</path>
<path id="path_9" class="path"
d="M78.9,186.3c0,0,4.3,30.3,44.9,30.3s57.9-45.6,57.9-88.8s-9-86.5-56.2-86.5 c-38.9,0-50.9,22.3-50.9,60.9c0,17.6,21,44.9,48.2,44.9c36.2,0,55.2-29.6,55.2-58.2">
</path>
</g>
<g class="circles"></g>
</svg>
<div class="controller">
<label><input id="gooey" type="checkbox" checked=""> <span>记录中</span></label>
</div>
<a href="https://smalltool.github.io/" style="display:none;"></a>
</body>
<script>
const $svg=document.querySelector('.svg');const $gooey=document.querySelector('#gooey');$gooey.addEventListener('change',()=>{$svg.classList.toggle('gooey')});const opts={num:31,radius:20};const init=()=>{const circles=document.querySelector('.circles');const namespace='http://www.w3.org/2000/svg';for(let i=0;i<opts.num;i++){const circle=document.createElementNS(namespace,'circle');circle.classList.add('circle');circle.setAttribute('r',opts.radius);circle.setAttribute('cx',128);circle.setAttribute('cy',128);circles.appendChild(circle)}let n=10;setInterval(()=>{n=n-1;animate(n);if(n===0)n=10},1200)};init();const animate=n=>{const paths=document.querySelectorAll('.path');const circles=document.querySelectorAll('.circle');if(!paths[n])return;const length=paths[n].getTotalLength();const step=length/opts.num;for(let i=0;i<opts.num;i++){const{x,y}=paths[n].getPointAtLength(i*step);gsap.to(circles[i],{cx:x,cy:y,ease:'power3.out',fill:i%2===0?'red':'white',delay:i*0.024})}};animate();
</script>
</html>本文参与 腾讯云自媒体同步曝光计划，分享自作者个人站点/博客。
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