WebGLRenderingContext.canvas

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.

Syntax

gl.canvas

Return 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

Specification
WebGL Specification
# DOM-WebGLRenderingContext-canvas

Browser compatibility

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See also