Experimental: This is an experimental technology
Check the Browser compatibility table carefully before using this in production.
The contextlost
event of the Canvas API is fired if the user agent detects that the backing storage associated with a CanvasRenderingContext2D
context is lost. Contexts can be lost for several reasons like driver crashes or the application runs out of memory, etc.
By default the user agent will attempt to restore the context and then fire the contextrestored
event. User code can prevent the context from being restored by calling Event.preventDefault()
during event handling.