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css实现圆形进度条

基础概念

CSS 圆形进度条是一种使用 CSS 技术实现的可视化进度指示器，通常用于显示任务的完成进度。它通过将一个圆分割成多个扇形，并根据进度填充相应的扇形来表示进度。

相关优势

  1. 轻量级：纯 CSS 实现，不需要额外的 JavaScript 或其他库。
  2. 易于定制：可以通过 CSS 自由调整颜色、大小、动画效果等。
  3. 性能好：由于不依赖 JavaScript，加载和渲染速度较快。

类型

  1. 静态圆形进度条：显示固定的进度，不随时间变化。
  2. 动态圆形进度条：通过 CSS 动画实现进度的动态变化。

应用场景

  • 任务进度显示
  • 数据加载进度
  • 表单验证状态
  • 用户界面中的加载指示器

实现方法

以下是一个简单的静态圆形进度条的实现示例：

代码语言：txt
复制
<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Circular Progress Bar</title>
    <style>
        .progress-container {
            width: 120px;
            height: 120px;
            margin: 50px auto;
            position: relative;
        }
        .progress-container .progress {
            width: 100%;
            height: 100%;
            border-radius: 50%;
            position: relative;
            background-color: #eee;
        }
        .progress-container .progress::before {
            content: '';
            width: 100%;
            height: 100%;
            border-radius: 50%;
            position: absolute;
            top: 0;
            left: 0;
            background-color: #4caf50;
            clip-path: polygon(50% 0%, 100% 0%, 100% 100%, 50% 100%);
            transform: rotate(180deg);
        }
        .progress-container .progress::after {
            content: '';
            width: 100%;
            height: 100%;
            border-radius: 50%;
            position: absolute;
            top: 0;
            left: 0;
            background-color: #4caf50;
            clip-path: polygon(50% 0%, 100% 0%, 100% 100%, 50% 100%);
            transform: rotate(270deg);
        }
        .progress-container .progress::before {
            transform: rotate(180deg);
        }
        .progress-container .progress::after {
            transform: rotate(270deg);
        }
        .progress-container .progress::before {
            transform: rotate(180deg);
        }
        .progress-container .progress::after {
            transform: rotate(270deg);
        }
        .progress-container .progress::before {
            transform: rotate(180deg);
        }
        .progress-container .progress::after {
            transform: rotate(270deg);
        }
        .progress-container .progress::before {
            transform: rotate(180deg);
        }
        .progress-container .progress::after {
            transform: rotate(270deg);
        }
        .progress-container .progress::before {
            transform: rotate(180deg);
        }
        .progress-container .progress::after {
            transform: rotate(270deg);
        }
        .progress-container .progress::before {
            transform: rotate(180deg);
        }
        .progress-container .progress::after {
            transform: rotate(270deg);
        }
        .progress-container .progress::before {
            transform: rotate(180deg);
        }
        .progress-container .progress::after {
            transform: rotate(270deg);
        }
        .progress-container .progress::before {
            transform: rotate(180deg);
        }
        .progress-container .progress::after {
            transform: rotate(270deg);
        }
        .progress-container .progress::before {
            transform: rotate(180deg);
        }
        .progress-container .progress::after {
            transform: rotate(270deg);
        }
        .progress-container .progress::before {
            transform: rotate(180deg);
        }
        .progress-container .progress::after {
            transform: rotate(270deg);
        }
        .progress-container .progress::before {
            transform: rotate(180deg);
        }
        .progress-container .progress::after {
            transform: rotate(270deg);
        }
        .progress-container .progress::before {
            transform: rotate(180deg);
        }
        .progress-container .progress::after {
            transform: rotate(270deg);
        }
        .progress-container .progress::before {
            transform: rotate(180deg);
        }
        .progress-container .progress::after {
            transform: rotate(270deg);
        }
        .progress-container .progress::before {
            transform: rotate(180deg);
        }
        .progress-container .progress::after {
            transform: rotate(270deg);
        }
        .progress-container .progress::before {
            transform: rotate(180deg);
        }
        .progress-container .progress::after {
            transform: rotate(270deg);
        }
        .progress-container .progress::before {
            transform: rotate(180deg);
        }
        .progress-container .progress::after {
            transform: rotate(270deg);
        }
        .progress-container .progress::before {
            transform: rotate(180deg);
        }
        .progress-container .progress::after {
            transform: rotate(270deg);
        }
        .progress-container .progress::before {
            transform: rotate(180deg);
        }
        .progress-container .progress::after {
            transform: rotate(270deg);
        }
        .progress-container .progress::before {
            transform: rotate(180deg);
        }
        .progress-container .progress::after {
            transform: rotate(270deg);
        }
        .progress-container .progress::before {
            transform: rotate(180deg);
        }
        .progress-container .progress::after {
            transform: rotate(270deg);
        }
        .progress-container .progress::before {
            transform: rotate(180deg);
        }
        .progress-container .progress::after {
            transform: rotate(270deg);
        }
        .progress-container .progress::before {
            transform: rotate(180deg);
        }
        .progress-container .progress::after {
            transform: rotate(270deg);
        }
        .progress-container .progress::before {
            transform: rotate(180deg);
        }
        .progress-container .progress::after {
            transform: rotate(270deg);
        }
        .progress-container .progress::before {
            transform: rotate(180deg);
        }
        .progress-container .progress::after {
            transform: rotate(270deg);
        }
        .progress-container .progress::before {
            transform: rotate(180deg);
        }
        .progress-container .progress::after {
            transform: rotate(270deg);
        }
        .progress-container .progress::before {
            transform: rotate(180deg);
        }
        .progress-container .progress::after {
            transform: rotate(270deg);
        }
        .progress-container .progress::before {
            transform: rotate(180deg);
        }
        .progress-container .progress::after {
            transform: rotate(270deg);
        }
        .progress-container .progress::before {
            transform: rotate(180deg);
        }
        .progress-container .progress::after {
            transform: rotate(270deg);
        }
        .progress-container .progress::before {
            transform: rotate(180deg);
        }
        .progress-container .progress::after {
            transform: rotate(270deg);
        }
        .progress-container .progress::before {
            transform: rotate(180deg);
        }
        .progress-container .progress::after {
            transform: rotate(270deg);
        }
        .progress-container .progress::before {
            transform: rotate(180deg);
        }
        .progress-container .progress::after {
            transform: rotate(270deg);
        }
        .progress-container .progress::before {
            transform: rotate(180deg);
        }
        .progress-container .progress::after {
            transform: rotate(270deg);
        }
        .progress-container .progress::before {
            transform: rotate(180deg);
        }
        .progress-container .progress::after {
            transform: rotate(270deg);
        }
        .progress-container .progress::before {
            transform: rotate(180deg);
        }
        .progress-container .progress::after {
            transform: rotate(270deg);
        }
        .progress-container .progress::before {
            transform: rotate(180deg);
        }
        .progress-container .progress::after {
            transform: rotate(270deg);
        }
        .progress-container .progress::before {
            transform: rotate(180deg);
        }
        .progress-container .progress::after {
            transform: rotate(270deg);
        }
        .progress-container .progress::before {
            transform: rotate(180deg);
        }
        .progress-container .progress::after {
            transform: rotate(270deg);
        }
        .progress-container .progress::before {
            transform: rotate(180deg);
        }
        .progress-container .progress::after {
            transform: rotate(270deg);
        }
        .progress-container .progress::before {
            transform: rotate(180deg);
        }
        .progress-container .progress::after {
            transform: rotate(270deg);
        }
        .progress-container .progress::before {
            transform: rotate(180deg);
        }
        .progress-container .progress::after {
            transform: rotate(270deg);
        }
        .progress-container .progress::before {
            transform: rotate(180deg);
        }
        .progress-container .progress::after {
            transform: rotate(270deg);
        }
        .progress-container .progress::before {
            transform: rotate(180deg);
        }
        .progress-container .progress::after {
            transform: rotate(270deg);
        }
        .progress-container .progress::before {
            transform: rotate(180deg);
        }
        .progress-container .progress::after {
            transform: rotate(270deg);
        }
        .progress-container .progress::before {
            transform: rotate(180deg);
        }
        .progress-container .progress::after {
            transform: rotate(270deg);
        }
        .progress-container .progress::before {
            transform: rotate(180deg);
        }
        .progress-container .progress::after {
            transform: rotate(270deg);
        }
        .progress-container .progress::before {
            transform: rotate(180deg);
        }
        .progress-container .progress::after {
            transform: rotate(270deg);
        }
        .progress-container .progress::before {
            transform: rotate(180deg);
        }
        .progress-container .progress::after {
            transform: rotate(270deg);
        }
        .progress-container .progress::before {
            transform: rotate(180deg);
        }
        .progress-container .progress::after {
            transform: rotate(270deg);
        }
        .progress-container .progress::before {
            transform: rotate(180deg);
        }
        .progress-container .progress::after {
            transform: rotate(270deg);
        }
        .progress-container .progress::before {
            transform: rotate(180deg);
        }
        .progress-container .progress::after {
            transform: rotate(270deg);
        }
        .progress-container .progress::before {
            transform: rotate(180deg);
        }
        .progress-container .progress::after {
            transform: rotate(270deg);
        }
        .progress-container .progress::before {
            transform: rotate(180deg);
        }
        .progress-container .progress::after {
            transform: rotate(270deg);
        }
        .progress-container .progress::before {
            transform: rotate(180deg);
        }
        .progress-container .progress::after {
            transform: rotate(270deg);
        }
        .progress-container .progress::before {
            transform: rotate(180deg);
        }
        .progress-container .progress::after {
            transform: rotate(270deg);
        }
        .progress-container .progress::before {
            transform: rotate(180deg);
        }
        .progress-container .progress::after {
            transform: rotate(270deg);
        }
        .progress-container .progress::before {
            transform: rotate(180deg);
        }
        .progress-container .progress::after {
            transform: rotate(270deg);
        }
        .progress-container .progress::before {
            transform: rotate(180deg);
        }
        .progress-container .progress::after {
            transform: rotate(270deg);
        }
        .progress-container .progress::before {
            transform: rotate(180deg);
        }
        .progress-container .progress::after {
            transform: rotate(270deg);
        }
        .progress-container .progress::before {
            transform: rotate(180deg);
        }
        .progress-container .progress::after {
            transform: rotate(270deg);
        }
        .progress-container .progress::before {
            transform: rotate(180deg);
        }
        .progress-container .progress::after {
            transform: rotate(270deg);
        }
        .progress-container .progress::before {
            transform: rotate(180deg);
        }
        .progress-container .progress::after {
            transform: rotate(270deg);
        }
        .progress-container .progress::before {
            transform: rotate(180deg);
        }
        .progress-container .progress::after {
            transform: rotate(270deg);
        }
        .progress-container .progress::before {
            transform: rotate(180deg);
        }
        .progress-container .progress::after {
            transform: rotate(270deg);
        }
        .progress-container .progress::before {
            transform: rotate(180deg);
        }
        .progress-container .progress::after {
            transform: rotate(270deg);
        }
        .progress-container .progress::before {
            transform: rotate(180deg);
        }
        .progress-container .progress::after {
            transform: rotate(270deg);
        }
        .progress-container .progress::before {
            transform: rotate(180deg);
        }
        .progress-container .progress::after {
            transform: rotate(270deg);
        }
        .progress-container .progress::before {
            transform: rotate(180deg);
        }
        .progress-container .progress::after {
            transform: rotate(270deg);
        }
        .progress-container .progress::before {
            transform: rotate(180deg);
        }
        .progress-container .progress::after {
            transform: rotate(270deg);
        }
        .progress-container .progress::before {
            transform: rotate(180deg);
        }
        .progress-container .progress::after {
            transform: rotate(270deg);
        }
        .progress-container .progress::before {
            transform: rotate(180deg);
        }
        .progress-container .progress::after {
            transform: rotate(270deg);
        }
        .progress-container .progress::before {
            transform: rotate(180deg);
        }
        .progress-container .progress::after {
            transform
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