WebGLContextEvent

Luet tämän sisällön englanninkielistä versiota, koska tälle sisällölle ei ole vielä käännöstä. Auta meitä kääntämään tämä artikkeli!

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, Event.

  <div id="interfaceDiagram" style="display: inline-block; position: relative; width: 100%; padding-bottom: 11.666666666666666%; vertical-align: middle; overflow: hidden;"><svg style="display: inline-block; position: absolute; top: 0; left: 0;" viewbox="-50 0 600 70" preserveAspectRatio="xMinYMin meet"><a xlink:href="https://developer.mozilla.org/en-US/docs/Web/API/Event" target="_top"><rect x="1" y="1" width="75" height="50" fill="#fff" stroke="#D4DDE4" stroke-width="2px" /><text  x="38.5" y="30" font-size="12px" font-family="Consolas,Monaco,Andale Mono,monospace" fill="#4D4E53" text-anchor="middle" alignment-baseline="middle">Event</text></a><polyline points="76,25  86,20  86,30  76,25" stroke="#D4DDE4" fill="none"/><line x1="86" y1="25" x2="116" y2="25" stroke="#D4DDE4"/><a xlink:href="https://developer.mozilla.org/en-US/docs/Web/API/WebGLContextEvent" target="_top"><rect x="116" y="1" width="170" height="50" fill="#F4F7F8" stroke="#D4DDE4" stroke-width="2px" /><text  x="201" y="30" font-size="12px" font-family="Consolas,Monaco,Andale Mono,monospace" fill="#4D4E53" text-anchor="middle" alignment-baseline="middle">WebGLContextEvent</text></a></svg></div>

  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

Update compatibility data on GitHub

	Desktop						Mobile
	Chrome	Edge	Firefox	Internet Explorer	Opera	Safari	Android webview	Chrome for Android	Firefox for Android	Opera for Android	Safari on iOS	Samsung Internet
`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 Experimental	Chrome No support No	Edge No support No	Firefox Full support 49 Disabled Full support 49 Disabled Disabled From version 49: this feature is behind the `gfx.offscreencanvas.enabled` preference (needs to be set to `true`). To change preferences in Firefox, visit about:config.	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.