React を使用した HTML の SVG パス セレクター

Question

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 beginPath 方法，我用它来绘制 SVG。

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Answer 1

SVG を使用して小さなデモを作成しました:

• HTML: ユーザーが を使用して色を選択できるようにします。
• CSS: 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。
• インライン JS: 選択した色を --svg-fill-color に保存します。
• JS: mousedowneventListener を各 SVG path に割り当てます。
• JS: 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。

非常にシンプルなデモで、必要なものに拡張できます。

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。

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