最終的には SVG グラフィックのデータ URI を取得したいのですが、SVG ソースを画像要素に追加し、キャンバスで画像を描画してから、これを実行しようとしています。
このサンプルjsFiddleでは、キャンバスを描画しようとすると失敗します。何が欠けていますか?
セキュリティ上の制限により、これは Chrome ではなく Firefox で機能するはずです。
var image = new Image();
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image.src = 'data:image/svg+xml,' + xml;
document.querySelector('#container').appendChild(image);
var canvas = document.createElement('canvas');
var context = canvas.getContext('2d');
context.drawImage(image, 0, 0);
image.src = canvas.toDataURL();