我已经以下错误消息: Uncaught DOMException: Failed to execute 'toDataURL' on 'HTMLCanvasElement': Tainted canvases may not be exported.
at draw (http://motherlang-bananalang.com/videator-b.php:172:50)
at HTML
我具有由GitHub库上帆布拉伸签名输出到DataURL此函数()。当我检查它时,它会以一串编码数据(一个.png)的形式返回。 用户点击保存按钮,出现这种情况: saveButton.addEventListener("click", function (event) {
if (signaturePad.isEmpty()) {
alert("Please provide