[talmand]

I've always wondered how games written with javascript on canvas would handle cheating since you can type javascript code into the web page you are currently looking at.

Adobe also has a tool for converting Flash to Canvas: http://labs.adobe.com/technologies/wallaby/

[andypants]

If you write the javascript code inside an anonymous function, outside code by the user can't interact with it.

However, the user can still use javascript to manipulate the dom, and hence the canvas (I think).