How to remove the clip of a region in html 5 canvas

问题

I am working with clip() in canvas.

I have made a region to clip(), as specified below

this.svgRenderer.ctx.rect(positionX, positionY, Width, Height);
this.svgRenderer.ctx.clip();

After few drawing on the same canvas, I am trying to remove the clip for that region by using save() and restore().

But I am making mistakes and can't get that. So suggest any other way to remove the clip for the specified region without using save() and restore()

回答1:

.clip is a permanent context state change.

It can only be removed by wrapping it in .save and .restore.

Changing the canvas element width will clear the context state (and remove clipping) but will also erase the existing drawings.

来源：https://stackoverflow.com/questions/25282793/how-to-remove-the-clip-of-a-region-in-html-5-canvas