WebContextEvent 接口属于 WebGL API 的一部分，同时也是生成用来对 WebGL 渲染上下文作响应的事件接口。
继承
此接口从它的父接口 Event继承属性和方法。
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属性
此接口从它的父接口 Event继承属性。
WebGLContextEvent.statusMessage- 一个包含事件额外信息的只读属性。
方法
此接口本身并没有定义任何方法，而是从它的父接口 Event继承方法。
示例
使用 WEBGL_lose_context 插件， 你可以模拟 webglcontextlost 和 webglcontextrestored 事件：
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();
// 记录了 "webglcontextlost" 类型的 WebGLContextEvent 事件
规范
| 规范 | 状态 | 注释 |
|---|---|---|
| WebGL 1.0 WebGLContextEvent |
Recommendation | Initial definition. |
浏览器兼容性
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 8.1 | 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 8.1 | 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
- 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.