WebGLRenderingContext.drawingBufferWidth

Baseline Widely available

This feature is well established and works across many devices and browser versions. It’s been available across browsers since July 2015.

WebGLRenderingContext.drawingBufferWidth 只读属性,指示当前绘图缓冲区的实际宽度。它应当匹配与绘图上下文相关联的 <canvas> 元素的宽度属性。如果实现未能提供所要求的宽度,值将有所不同。

语法

gl.drawingBufferWidth;

示例

指定<canvas> 元素:

html
<canvas id="canvas"></canvas>

你可以通过下面几行代码来获取绘图缓冲区的宽度:

js
var canvas = document.getElementById("canvas");
var gl = canvas.getContext("webgl");
gl.drawingBufferWidth; // 300

规范

Specification
WebGL Specification
# DOM-WebGLRenderingContext-drawingBufferWidth

浏览器兼容性

Report problems with this compatibility data on GitHub
desktopmobile
Chrome
Edge
Firefox
Opera
Safari
Chrome Android
Firefox for Android
Opera Android
Safari on iOS
Samsung Internet
WebView Android
WebView on iOS
drawingBufferWidth

Legend

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Full support
Full support

相关链接