CanvasRenderingContext2D:canvas 属性
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.
Canvas API 的 CanvasRenderingContext2D.canvas
属性是对与给定上下文关联的 HTMLCanvasElement
对象的只读引用。如果没有与之关联的 <canvas>
元素,对象值为 null
。
值
一个 HTMLCanvasElement
对象。
示例
给出 <canvas>
元素:
html
<canvas id="canvas"></canvas>
你可以通过 CanvasRenderingContext2D
调用内部的 canvas
属性,获取 canvas 元素的引用:
js
const canvas = document.getElementById("canvas");
const ctx = canvas.getContext("2d");
ctx.canvas; // HTMLCanvasElement
规范
Specification |
---|
HTML Standard # dom-context-2d-canvas-dev |
浏览器兼容性
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