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.
WebGLRenderingContext.canvas
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 |
---|
WebGL Specification # DOM-WebGLRenderingContext-canvas |
Browser compatibility
Desktop | Mobile | |||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|
Chrome | Edge | Firefox | Internet Explorer | Opera | Safari | WebView Android | Chrome Android | Firefox for Android | Opera Android | Safari on IOS | Samsung Internet | |
canvas |
9
|
12
|
4
|
11
|
12
|
5.1
|
4.4.3
|
25
|
4
|
12
|
8
|
1.5
|
OffscreenCanvas |
No
|
No
|
44
|
No
|
No
|
No
|
No
|
No
|
No
|
No
|
No
|
No
|
See also
© 2005–2021 MDN contributors.
Licensed under the Creative Commons Attribution-ShareAlike License v2.5 or later.
https://developer.mozilla.org/en-US/docs/Web/API/WebGLRenderingContext/canvas