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html5-canvas Tutorial => Change opacity with "globalAlpha"

context.globalAlpha=0.50. You can change the opacity of new drawings by setting the globalAlpha to a value between 0.00 (fully transparent) and 1.00 (fully ...

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查詢 「globalAlpha」的人也找了：

  1. globalAlpha
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  6. Ctx restore
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  7. fillStyle transparent
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  8. createPattern
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