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| <!DOCTYPE html> | |
| <html> | |
| <head> | |
| <meta charset="utf-8"> | |
| <style type="text/css"> | |
| body { | |
| --size: 128px; | |
| --fg-color: blue; | |
| --progress: 0; | |
| } | |
| @keyframes rotate { | |
| from { transform: rotate(0); } | |
| to { transform: rotate(360deg); } | |
| } | |
| .progress { | |
| animation-name: rotate; | |
| animation-duration: 4s; | |
| animation-iteration-count: infinite; | |
| } | |
| .progress { | |
| width: var(--size); | |
| height: var(--size); | |
| } | |
| .progress circle { | |
| fill:none; | |
| stroke: var(--fg-color); | |
| stroke-width: calc(var(--size) * 0.1); | |
| stroke-linecap: round; | |
| stroke-dasharray: var(--progress) 1; | |
| } | |
| </style> | |
| </head> | |
| <body> | |
| <svg class="progress" viewBox="0 0 100% 100%"> | |
| <circle cx="50%" cy="50%" r="45%" pathLength="1"></circle> | |
| </svg> | |
| <script type="text/javascript"> | |
| const values = [0, 0.1, 0.2, 0.22, 0.27, 0.3, 0.4, 0.5, 0.6, 0.7, 0.7, 0.7, 0.8, 0.85, 0.9, 0.9, 0.95, 0.99, 1 ]; | |
| let index = -1; | |
| let forward = true; | |
| setInterval(() => { | |
| index += forward ? 1 : -1; | |
| if (index < 0 || index >= values.length) { | |
| forward = !forward; | |
| index += forward ? 1 : -1; | |
| } | |
| document.body.style.setProperty("--progress", values[index]); | |
| }, 200); | |
| </script> | |
| </body> | |
| </html> |
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