拡大縮小

HTML

Posted at 2024-01-17

<!DOCTYPE html>
<html lang="en">
<head>
  <meta charset="UTF-8">
  <meta name="viewport" content="width=device-width, initial-scale=1.0">
  <title>Zoomable Scrollable Div with Buttons</title>
  <style>
    #zoomableDiv {
      width: 300px;
      height: 300px;
      border: 1px solid #ccc;
      overflow: auto;
    }

    #content {
      width: 1000px; /* 大きなコンテンツ */
      height: 1000px;
      transition: transform 0.3s ease-in-out;
    }

    .zoomButton {
      cursor: pointer;
      margin: 5px;
    }
  </style>
  <script src="https://code.jquery.com/jquery-3.6.4.min.js"></script>
</head>
<body>
  <div id="zoomableDiv">
    <div id="content">
      <!-- ここに拡大縮小したいコンテンツを配置 -->
      <p>This is zoomable and scrollable content.</p>
    </div>
  </div>

  <button class="zoomButton" onclick="zoomIn()">Zoom In</button>
  <button class="zoomButton" onclick="zoomOut()">Zoom Out</button>

  <script>
    var scale = 1;

    function zoomIn() {
      scale += 0.1;
      updateTransform();
    }

    function zoomOut() {
      scale -= 0.1;
      updateTransform();
    }

    function updateTransform() {
      // 最小と最大の拡大率を制限（お好みで変更可能）
      scale = Math.max(0.5, Math.min(2, scale));

      // transformプロパティを使用して拡大縮小
      $('#content').css('transform', 'scale(' + scale + ')');
    }
  </script>
</body>
</html>

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