HTML5滑动区域选择元素 - 滑块元素 H5

在HTML5中，创建滑动区域选择元素（滑块）可以使用以下代码示例：




<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8">
<title>滑动区域选择</title>
<style>
  .slider-container {
    width: 100%;
    background-color: #f7f7f7;
    margin: 10px 0;
    position: relative;
  }
  .slider-range {
    -webkit-appearance: none;
    width: 100%;
    height: 5px;
    background-color: #007bff;
    outline: none;
    opacity: 0.7;
    transition: opacity .2s;
  }
  .slider-range:hover {
    opacity: 1;
  }
  .slider-thumb {
    width: 20px;
    height: 20px;
    background-color: #007bff;
    border: none;
    border-radius: 50%;
    cursor: pointer;
    -webkit-appearance: none;
    margin-top: -7px;
  }
  .slider-value {
    position: absolute;
    display: inline-block;
    left: 50%;
    transform: translateX(-50%);
    color: #000;
  }
</style>
</head>
<body>
 
<div class="slider-container">
  <input type="range" min="1" max="100" value="50" class="slider-range" id="myRange">
  <button class="slider-thumb" id="thumb"></button>
</div>
<div class="slider-value" id="sliderValue">50</div>
 
<script>
  const slider = document.getElementById('myRange');
  const thumb = document.getElementById('thumb');
  const sliderValue = document.getElementById('sliderValue');
 
  slider.addEventListener('input', () => {
    const val = slider.value;
    thumb.style.left = `${(val - 1) * 100 / (slider.max - slider.min)}%`;
    sliderValue.innerText = val;
  });
 
  thumb.addEventListener('mousedown', function(e) {
    const startX = e.clientX - thumb.offsetLeft;
 
    function handler(e) {
      const x = e.clientX - startX;
      if (x < 0) {
        thumb.style.left = '0%';
      } else if (x > 100) {
        thumb.style.left = '100%';
      } else {
        thumb.style.left = `${x}px`;
      }
      slider.value = Math.round((x / 100) * (slider.max - slider.min) + slider.min);
      sliderValue.innerText = slider.value;
    }
 
    function clearHandler() {
      document.removeEventListener('mousemove', handler);
      document.removeEventListener('mouseup', clearHandler);
    }
 
    document.addEventListener('mousemove', handler);
    document.addEventListener('mouseup', clearHandler);
  });
</script>
 
</body>
</html>

这段代码实现了一个简单的滑动区域选择器，用户可以通过拖动滑块来改变区域选择的值。同时，滑块和区域选择器都有合适的样式，并且可以通过JavaScript代码进行交互。

HTML5滑动区域选择元素 - 滑块元素 H5

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