CanvasRenderingContext2D.removeHitRegion()

已废弃

This feature is obsolete. Although it may still work in some browsers, its use is discouraged since it could be removed at any time. Try to avoid using it.

CanvasRenderingContext2D.removeHitRegion() 是 Canvas 2D API 删除canvas中已存在的碰撞区域的方法。

示例

使用 `removeHitRegion` 方法

这是一段使用 removeHitRegion 方法的简单的代码片段。

HTML

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

JavaScript

var canvas = document.getElementById("canvas");
var ctx = canvas.getContext("2d");

// set a hit region
ctx.addHitRegion({id: "eyes"});

// remove it from the canvas
ctx.removeHitRegion("eyes");

规范描述

Specification	Status	Comment
HTML Living Standard CanvasRenderingContext2D.removeHitRegion	Living Standard

We're converting our compatibility data into a machine-readable JSON format. This compatibility table still uses the old format, because we haven't yet converted the data it contains. Find out how you can help! (en-US)

Desktop
Mobile

Feature	Chrome	Firefox (Gecko)	Internet Explorer	Opera	Safari
Basic support	(Yes)[1]	30 (30) [2]	未实现	未实现	未实现

Feature	Android	Chrome for Android	Firefox Mobile (Gecko)	IE Mobile	Opera Mobile	Safari Mobile
Basic support	未实现	未实现	30 (30) [2]	未实现	未实现	未实现

兼容性注解

[1] 此特性受控于特性标识。设置标识 ExperimentalCanvasFeatures 为 true 进行启用。
[2] 此特性受控于特性偏好设置。在 about:config 中，设置 canvas.hitregions.enabled 为 true。