draw pictures and text on canvas. Pictures and text can be displayed normally on canvas. After transferring pictures to canvas, an error will be reported
. 
error message
draw pictures and text on canvas. Pictures and text can be displayed normally on canvas. After transferring pictures to canvas, an error will be reported
.
error message
img.onload = function() {
ctx.drawImage();
canvas.toDataURL('image/png'); // .
}the picture you quote here should be cross-domain.
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