HTML 5 Canvas and Javascript: Combining layered canvases

问题

I wanted to combine images from different canvases (layered on top of each other using z-index) to export as one single image.

Is this possible?

回答1:

Same :

How can I save div as image at client side where div contains one or more than one HTML5 canvas elements?

Save many canvas element as image

回答2:

Try using the context.getImageData() and context.putImageData(). I haven't tried that in Javascript before, but it shouldn't be that difficult.

HTML Canvas 2D Context

来源：https://stackoverflow.com/questions/4612719/html-5-canvas-and-javascript-combining-layered-canvases