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:
var canvas = document.getElementById('canvas'); var gl = canvas.getContext('webgl'); gl.canvas; // HTMLCanvasElement
Offscreen canvas
Example using the experimental OffscreenCanvas
object.
var offscreen = new OffscreenCanvas(256, 256); var gl = offscreen.getContext('webgl'); gl.canvas; // OffscreenCanvas
Specifications
Specification | Status | Comment |
---|---|---|
WebGL 1.0 The definition of 'WebGLRenderingContext.canvas' in that specification. |
Recommendation | Initial definition. |
Browser compatibility
The compatibility table in this page is generated from structured data. If you'd like to contribute to the data, please check out https://github.com/mdn/browser-compat-data and send us a pull request.
Desktop | Mobile | |||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|
canvas | Chrome Full support 9 | Edge Full support 12 | Firefox Full support 4 | IE Full support 11 | Opera Full support 12 | Safari Full support 5.1 | WebView Android Full support Yes | Chrome Android Full support 25 | Firefox Android Full support Yes | Opera Android Full support 12 | Safari iOS Full support 8 | Samsung Internet Android Full support 1.5 |
OffscreenCanvas | Chrome No support No | Edge No support No | Firefox
Full support
44
| IE No support No | Opera No support No | Safari No support No | WebView Android No support No | Chrome Android No support No | Firefox Android No support No | Opera Android No support No | Safari iOS No support No | Samsung Internet Android No support No |
Legend
- Full support
- Full support
- No support
- No support
- Experimental. Expect behavior to change in the future.
- Experimental. Expect behavior to change in the future.
- User must explicitly enable this feature.
- User must explicitly enable this feature.