如何在html5中创建一个透明的canvas？ [英] How do I make a transparent canvas in html5?

问题描述

如何使画布透明？

推荐答案

画布在默认情况下是透明的。

Canvases are transparent by default.

尝试设置页面背景图片，然后在其上放置画布。

Try setting a page background image, and then put a canvas over it. If nothing is drawn on the canvas, you can fully see the page background.

想想画布就像在玻璃板上画画一样。

Think of a canvas as like painting on a glass plate.

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