OffscreenCanvasRenderingContext2D: commit() method
Note: This feature is available in Web Workers.
Deprecated: This feature is no longer recommended. Though some browsers might still support it, it may have already been removed from the relevant web standards, may be in the process of being dropped, or may only be kept for compatibility purposes. Avoid using it, and update existing code if possible; see the compatibility table at the bottom of this page to guide your decision. Be aware that this feature may cease to work at any time.
Non-standard: This feature is non-standard and is not on a standards track. Do not use it on production sites facing the Web: it will not work for every user. There may also be large incompatibilities between implementations and the behavior may change in the future.
The
OffscreenCanvasRenderingContext2D.commit()
method of the Canvas 2D API was intended to copy the rendering context's bitmap to the bitmap of the placeholder <canvas>
element of the associated OffscreenCanvas
object.
The copy operation is synchronous. Calling this method is not needed for the transfer, since it happens automatically during the event-loop execution.
Syntax
commit()
Examples
const placeholder = document.createElement("canvas");
const offscreen = placeholder.transferControlToOffscreen();
const ctx = offscreenCanvas.getContext("2d");
// Perform some drawing using the 2d context
ctx.fillStyle = "blue";
ctx.fillRect(0, 0, 10, 10);
// Push placeholder to the canvas element
ctx.commit();
Specifications
Not part of any specification.
Browser compatibility
BCD tables only load in the browser
See also
- The interface defining this method:
OffscreenCanvasRenderingContext2D