React を使用した HTML の SVG パス セレクター
P粉566048790
2023-09-01 23:22:48
<p>我正在创建一个绘画应用程序，用户可以在其中上传 SVG。填充不同的颜色，在 SVG 上绘制，然后将其擦除。
但不幸的是，我无法获取 SVG 的路径。
下面是 SVG 图像，如果我将鼠标悬停，我只想获取该悬停路径的路径并用所选颜色填充它。
我尝试了 Canvas 和 SVG 路径。但没有运气。 Canvas 有 <code>beginPath</code> 方法，我用它来绘制 SVG。</p>
<p>
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</p>
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SVG を使用して小さなデモを作成しました:
- HTML: ユーザーが
- CSS:
- インライン JS: 選択した色を
- JS:
- JS:
非常にシンプルなデモで、必要なものに拡張できます。を使用して色を選択できるようにします。bodyに CSS カスタム プロパティ を作成し、選択した色を保持します:--svg-fill-color。--svg-fill-colorに保存します。mousedowneventListenerを各 SVGpathに割り当てます。path(mousedown) がクリックされたとき、--svg-fill-colorの値を>Use function# に代入します。 ##setColor(..)pathの色を塗りつぶします。注: ページを閉じると色は保存されません。SVG の書き換え、ローカル ストレージへの値の保存などに注意する必要があります。
Update コード内の「herrstrietzel」コメントの後にあります。