I have a Sketching app done in all HTML5 and Javascript, and I was wondering how I would create an Undo Button, so you could undo the last thing you drew. Any idea?
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I have a Sketching app done in all HTML5 and Javascript, and I was wondering how I would create an Undo Button, so you could undo the last thing you drew. Any idea?
You have to store all modifications in a datastructure. Then you can delete the latest modification if the user wants to undo it. Then you repaint all drawing operations from your datastructure again.