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| 1 | +<!DOCTYPE html> |
| 2 | +<html lang="en"> |
| 3 | + <head> |
| 4 | + <meta charset="UTF-8" /> |
| 5 | + <meta name="viewport" content="width=device-width, initial-scale=1.0" /> |
| 6 | + <title>Day 81/100</title> |
| 7 | + </head> |
| 8 | + <body> |
| 9 | + <main> |
| 10 | + <div class="slider" id="slider"> |
| 11 | + <div class="slider-handle" id="slider-handle"></div> |
| 12 | + <div class="slider-track" id="slider-track"></div> |
| 13 | + </div> |
| 14 | + </main> |
| 15 | + |
| 16 | + <style> |
| 17 | + :root { |
| 18 | + --slider-value: 0; |
| 19 | + } |
| 20 | + |
| 21 | + body { |
| 22 | + margin: 0; |
| 23 | + overflow: hidden; |
| 24 | + display: flex; |
| 25 | + justify-content: center; |
| 26 | + align-items: center; |
| 27 | + width: 100vw; |
| 28 | + height: 100vh; |
| 29 | + background-color: rgb( |
| 30 | + calc(var(--slider-value) * 255), |
| 31 | + calc(var(--slider-value) * 255), |
| 32 | + calc(var(--slider-value) * 255) |
| 33 | + ); |
| 34 | + } |
| 35 | + |
| 36 | + .slider { |
| 37 | + position: relative; |
| 38 | + width: 200px; |
| 39 | + height: 50px; |
| 40 | + background-color: #fff; |
| 41 | + outline: 5px solid #000; |
| 42 | + } |
| 43 | + |
| 44 | + .slider-handle { |
| 45 | + position: absolute; |
| 46 | + top: 0; |
| 47 | + left: 0; |
| 48 | + width: 5px; |
| 49 | + height: calc(100% - 5px); |
| 50 | + margin: 2.5px; |
| 51 | + background-color: #000; |
| 52 | + } |
| 53 | + |
| 54 | + .slider-track { |
| 55 | + position: absolute; |
| 56 | + top: 0; |
| 57 | + left: 0; |
| 58 | + width: 100%; |
| 59 | + height: 100%; |
| 60 | + } |
| 61 | + </style> |
| 62 | + |
| 63 | + <script> |
| 64 | + const slider = document.getElementById("slider"); |
| 65 | + const sliderHandle = document.getElementById("slider-handle"); |
| 66 | + const sliderTrack = document.getElementById("slider-track"); |
| 67 | + |
| 68 | + let isDragging = false; |
| 69 | + |
| 70 | + slider.addEventListener("click", (e) => { |
| 71 | + const x = e.clientX - slider.offsetLeft; |
| 72 | + sliderHandle.style.left = `${x}px`; |
| 73 | + }); |
| 74 | + |
| 75 | + slider.addEventListener("mousedown", (e) => { |
| 76 | + e.preventDefault(); |
| 77 | + const x = e.clientX - slider.offsetLeft; |
| 78 | + isDragging = true; |
| 79 | + let left = Math.max( |
| 80 | + 0, |
| 81 | + Math.min(x, slider.offsetWidth - sliderHandle.offsetWidth - 5) |
| 82 | + ); |
| 83 | + sliderHandle.style.left = `${left}px`; |
| 84 | + document.documentElement.style.setProperty( |
| 85 | + "--slider-value", |
| 86 | + `${left / (slider.offsetWidth - sliderHandle.offsetWidth - 5)}` |
| 87 | + ); |
| 88 | + }); |
| 89 | + |
| 90 | + document.addEventListener("mouseup", (e) => { |
| 91 | + e.preventDefault(); |
| 92 | + isDragging = false; |
| 93 | + }); |
| 94 | + |
| 95 | + document.addEventListener("mousemove", (e) => { |
| 96 | + e.preventDefault(); |
| 97 | + if (isDragging) { |
| 98 | + const x = e.clientX - slider.offsetLeft; |
| 99 | + let left = Math.max( |
| 100 | + 0, |
| 101 | + Math.min(x, slider.offsetWidth - sliderHandle.offsetWidth - 5) |
| 102 | + ); |
| 103 | + sliderHandle.style.left = `${left}px`; |
| 104 | + document.documentElement.style.setProperty( |
| 105 | + "--slider-value", |
| 106 | + `${left / (slider.offsetWidth - sliderHandle.offsetWidth - 5)}` |
| 107 | + ); |
| 108 | + } |
| 109 | + }); |
| 110 | + </script> |
| 111 | + </body> |
| 112 | +</html> |
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