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Question : Canvas doesn't show up in the browser using-fillRect

If I look at fillRect on MDN it tells me that it's expecting 4 numeric arguments which is what the error also says. So I changed line 26 myContext.

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查詢 「Mdn fillrect」的人也找了：

  1. getImageData
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  2. globalCompositeOperation
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  3. fillRect
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  4. drawImage
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  5. fillrect js
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  6. canvas範例
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  7. Canvas strokeStyle
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  8. Canvas fillStyle
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