js实现一个分段下载进度条动画效果代码-html代码-BFW代码库

代码语言：html

所属分类：进度条

代码描述：js实现一个分段下载进度条动画效果代码

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">
  
  <link rel='stylesheet' href='https://fonts.googleapis.com/css2?family=Hind&amp;display=swap'>
  
<style>
* {
	border: 0;
	box-sizing: border-box;
	margin: 0;
	padding: 0;
}
:root {
	--hue: 223;
	--bg: hsl(var(--hue),10%,90%);
	--fg: hsl(var(--hue),10%,10%);
	--primary: hsl(var(--hue),90%,55%);
	--disabled: hsl(var(--hue),10%,75%);
	font-size: calc(16px + (24 - 16) * (100vw - 320px) / (1280 - 320));
}
body, button {
	font: 1em/1.5 Hind, sans-serif;
}
body {
	background: var(--bg);
	color: var(--fg);
	height: 100vh;
	display: grid;
	place-items: center;
}
button {
	background: hsl(var(--hue),90%,55%);
	border-radius: 0.2em;
	color: #fff;
	cursor: pointer;
	margin: auto;
	padding: 0.5em 1em;
	position: relative;
	left: 50%;
	transform: translateX(-50%);
	text-align: center;
	transition: background 0.15s linear;
}
button:hover {
	background: hsl(var(--hue),90%,45%);
}
.sp {
	--incTrans: 0.1; /* in seconds */
	display: block;
	margin-bottom: 1.5em;
	overflow: visible;
	width: 12.75em;
	height: 1.5em;
}
.sp__bar, .sp__hub {
	stroke: var(--disabled);
}
.sp__hub--done, .sp__dot--done {
	transition: r 0.2s cubic-bezier(0,0,0.33,1.67);
}
.sp__hub--done {
	r: 10px;
}
.sp__hub--done ~ .sp__bar-fill {
	transition: all calc(1s * var(--incTrans)) linear;
}
.sp__bar-fill, .sp__hub-fill {
	stroke: var(--primary);
}
.sp__bar-fill {
	stroke-dasharray: 40 40;
	stroke-dashoffset: 40;
}
.sp__hub-fill {
	stroke-dasharray: 0 62.8 0;
	visibility: hidden;
}
.sp__hub-fill--done {
	stroke-dasharray: 31.4 0 31.4;
	transition: all 0.2s 0.2s ease-out;
	visibility: visible;
}
.sp__dot {
	fill: var(--primary);
}
.sp__dot--done {
	r: 4px;
	transition-delay: 0.4s;
}
.status {
	margin-bottom: 4.5em;
	text-align: center;
}

@media (prefers-color-scheme: dark) {
	:root {
		--bg: hsl(var(--hue),10%,10%);
		--fg: hsl(var(--hue),10%,90%);
		--primary: hsl(var(--hue),90%,65%);
		--disabled: hsl(var(--hue),10%,30%);
	}
}
</style>

</head>

<body  >
  <main>
	<svg class="sp" width="204px" height="24px" viewBox="0 0 204 24" xmlns="http://www.w3.org/2000/svg">
		<!-- Part 1 -->
		<circle data-dot="1" class="sp__dot" cx="12" cy="12" r="0" fill="#000"/>
		<line class="sp__bar" x1="22" y1="12" x2="62" y2="12" fill="none" stroke="#000" stroke-width="4" />
		<circle data-hub="1" class="sp__hub" cx="12" cy="12" r="2" fill="none" stroke="#000" stroke-width="4" />
		<line data-bar="1" class="sp__bar-fill" x1="22" y1="12" x2="62" y2="12" fill="none" stroke="#000" stroke-width="4" />
		<circle data-hub-fill="1" class="sp__hub-fill" cx="12" cy="12" r="10" fill="none" stroke-width="4" transform="rotate(180,12,12)" />
		<!-- Part 2 -->
		<circle data-dot="2" class="sp__dot" cx="72" cy="12" r="0" fill="#000"/>
		<line class="sp__bar" x1="82" y1="12" x2="122" y2="12" fill="none" stroke="#000" stroke-width="4" />
		<circle data-hub="2" class="sp__hub" cx="72" cy="12" r="2" fill="none" stroke="#000" stroke-width="4" />
		<line data-bar="2" class="sp__bar-fill" x1="82" y1="12" x2="122" y2="12" fill="none" stroke="#000" stroke-width="4" />
		<circle data-hub-fill="2" class="sp__hub-fill" cx="72" cy="12" r="10" fill="none" stroke-width="4" transform="rotate(180,72,12)" />
		<!-- Part 3 -->
		<circle data-dot="3" class="sp__dot" cx="132" cy="12" r="0" fill="#000"/>
		<line class="sp__bar" x1="142" y1="12" x2=".........完整代码请登录后点击上方下载按钮下载查看