The OffscreenCanvas() constructor returns a newly instantiated OffscreenCanvas object.

width

The width of the offscreen canvas.

height

The height of the offscreen canvas.

This example creates a new offscreen canvas using the OffscreenCanvas() constructor. We then initialize a WebGL context on it using the getContext() method.

const offscreen = new OffscreenCanvas(256, 256);
const gl = offscreen.getContext("webgl");

• OffscreenCanvas, the interface this constructor belongs to