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drawImage and getImageData | Sololearn

How to use getImageData and drawImage. I had the problem (Failed to execute 'getImageData' on 'CanvasRenderingContext2D': The canvas has ...

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查詢 「getImageData」的人也找了：

  1. getImageData
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  2. putImageData
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  3. createImageData
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  4. drawImage
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  5. Uint8ClampedArray
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  6. measureText
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  7. failed to execute 'getimagedata' on 'canvasrenderingcontext2d': the source width is 0.
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  8. ImageBitmap
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