contextlost and contextrestoredThe contextlost event for <canvas> fires when the canvas backing storage is lost, while the contextrestored event fires when it is recreated.canvasCanvaslimitedhttps://html.spec.whatwg.org/multipage/webappapis.html#context-lost-stepshttps://developer.mozilla.org/docs/Web/API/OffscreenCanvas/contextlost_eventapi.CanvasRenderingContext2D.isContextLostapi.HTMLCanvasElement.contextlost_eventapi.HTMLCanvasElement.contextrestored_eventapi.OffscreenCanvas.contextlost_eventapi.OffscreenCanvas.contextrestored_eventapi.OffscreenCanvasRenderingContext2D.isContextLosthttps://nowyoucanuse.com/features--canvas-context-lost.html