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WebGLRenderingContext: canvas property - Web APIs

WebGLRenderingContext: canvas property

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Note: This feature is available in Web Workers.

The WebGLRenderingContext.canvas property is a read-only reference to the HTMLCanvasElement or OffscreenCanvas object that is associated with the context. It might be null if it is not associated with a <canvas> element or an OffscreenCanvas object.

Value

Either a HTMLCanvasElement or OffscreenCanvas object or null.

Examples Canvas element

Given this <canvas> element:

<canvas id="canvas"></canvas>

You can get back a reference to it from the WebGLRenderingContext using the canvas property:

const canvas = document.getElementById("canvas");
const gl = canvas.getContext("webgl");
gl.canvas; // HTMLCanvasElement
Offscreen canvas

Example using the experimental OffscreenCanvas object.

const offscreen = new OffscreenCanvas(256, 256);
const gl = offscreen.getContext("webgl");
gl.canvas; // OffscreenCanvas
Specifications Browser compatibility See also

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