svg+css实现圈圈loading加载动画效果代码-html代码-BFW代码库

svg+css实现圈圈loading加载动画效果代码

代码语言：html

代码描述：svg+css实现圈圈loading加载动画效果代码

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, viewport-fit=cover">
  
  
  
<style>
* {
	border: 0;
	box-sizing: border-box;
	margin: 0;
	padding: 0;
}
:root {
	--hue: 223;
	--bg: hsl(var(--hue),90%,95%);
	--fg: hsl(var(--hue),90%,5%);
	--primary: hsl(var(--hue),90%,50%);
	--trans-dur: 0.3s;
	font-size: calc(16px + (24 - 16) * (100vw - 320px) / (1280 - 320));
}
body {
	background-color: var(--bg);
	color: var(--fg);
	font: 1em/1.5 sans-serif;
	height: 100vh;
	display: grid;
	place-items: center;
	transition: background-color var(--trans-dur);
}
main {
	padding: 1.5em 0;
}
.pl {
	display: block;
	overflow: visible;
	width: 8em;
	height: 8em;
}
.pl__ring {
	stroke: hsla(var(--hue),90%,5%,0.1);
	transition: stroke var(--trans-dur);
}
.pl__worm {
	stroke: var(--primary);
	transform-origin: 64px 64px;
	visibility: hidden;
}
.pl__worm--moving {
	animation: worm 8s linear;
	visibility: visible;
}

/* Dark theme */
@media (prefers-color-scheme: dark) {
	:root {
		--bg: hsl(var(--hue),90%,5%);
		--fg: hsl(var(--hue),90%,95%);
	}
	.pl__ring {
		stroke: hsla(var(--hue),90%,95%,0.1);
	}
}

/* Animations */
@keyframes worm {
	from {
		stroke-dasharray: 22 307.86 22;
		transform: rotate(0);
	}
	to {
		stroke-dasharray: 2 347.86 2;
		transform: rotate(4turn);
	}
}
</style>



</head>

<body >
  <main>
	<svg class="pl" viewBox="0 0 128 128" width="128px" height="128px" xmlns="http://www.w3.org/2000/svg">
		<g fill="none" stroke-linecap="round" stroke-width="16" transform="rotate(-90,64,64)">
			<circle class="pl__ring" r="56" cx="64" cy="64" stroke="#ddd" />
			<circle class="pl__worm pl__worm--moving" r="56" cx="64" cy="64" stroke="currentColor" stroke-dasharray="22 307.86 22" data-worm />
		</g>
		<g data-particles></g>
	</svg>
</main>

  
      <script  >
window.addEventListener("DOMContentLoaded",() => {
	const dp = new DecayingPreloader(".pl");
});

class DecayingPreloader {
	particles = [];
	totalParticles = 120;
	replayTimeout = null;

	constructor(el) {
		this.el = document.querySelector(el);
		this.particleGroup = this.el?.querySelector("[data-particles]");
		this.worm = this.el?.querySelector("[data-worm]");

		this.init();
	}
	init() {
		this.spawnParticles(this.totalParticles);
		this.worm?.addEventListener("animationend",this.replayParticles.bind(this));
	}
	createParticle(x,y,r,delay) {
		const particle = new DecayParticle(x,y,r,delay);
		this.particleGroup?.appendChild(particle.g);
		// animation params
		particle.gAnimation = particle.g.animate(
			[
				{ transform: `translate(${particle.x}px,0)` },
				{ transform: `translate(${particle.x + particle.dx}px,0)` },
			],
			{ delay: particle.delay, duration: particle.duration, e.........完整代码请登录后点击上方下载按钮下载查看