The WebContextEvent interface is part of the WebGL API and is an interface for an event that is generated in response to a status change to the WebGL rendering context.
Inheritance
This interface inherits properties and methods from its parent interface,Ā Event.
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a:hover text { fill: #0095DD; pointer-events: all;}
Properties
This interface inherits properties from its parent interface, Event.
WebGLContextEvent.statusMessage- A read-only property containing additional information about the event.
Methods
This interface doesn't define any own methods, but inherits methods from its parent interface, Event.
Examples
With the help of the WEBGL_lose_context extension, you can simulate the webglcontextlost and webglcontextrestored events:
var canvas = document.getElementById('canvas');
var gl = canvas.getContext('webgl');
canvas.addEventListener('webglcontextlost', function(e) {
console.log(e);
}, false);
gl.getExtension('WEBGL_lose_context').loseContext();
// WebGLContextEvent event with type "webglcontextlost" is logged.
Specifications
| Specification | Status | Comment |
|---|---|---|
| WebGL 1.0 The definition of 'WebGLContextEvent' 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.
Update compatibility data on GitHub
| Desktop | Mobile | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
WebGLContextEvent | Chrome Full support 9 | Edge Full support 12 | Firefox Full support 49 | 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 49 | Opera Android Full support 12 | Safari iOS Full support 8 | Samsung Internet Android Full support Yes |
statusMessage | Chrome Full support 9 | Edge Full support 12 | Firefox Full support 49 | 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 49 | Opera Android Full support 12 | Safari iOS Full support 8 | Samsung Internet Android Full support Yes |
| Available in workers | Chrome No support No | Edge No support No | Firefox
Full support
49
| 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 Ā
- Full support
- No support Ā
- 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.