Please note, this is a STATIC archive of website developer.mozilla.org from 03 Nov 2016, cach3.com does not collect or store any user information, there is no "phishing" involved.

CanvasRenderingContext2D.clearHitRegions()

This is an experimental technology
Because this technology's specification has not stabilized, check the compatibility table for usage in various browsers. Also note that the syntax and behavior of an experimental technology is subject to change in future versions of browsers as the specification changes.

The CanvasRenderingContext2D.clearHitRegions() method of the Canvas 2D API removes all hit regions from the canvas.

Syntax

void ctx.clearHitRegions();

Examples

Using the clearHitRegions method

This is just a simple code snippet which uses the clearHitRegions method.

HTML

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

JavaScript

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

// set some hit regions
ctx.addHitRegion({id: "eyes"});
ctx.addHitRegion({id: "nose"});
ctx.addHitRegion({id: "mouth"});

// remove them altogether from the canvas
ctx.clearHitRegions();

Specifications

Specification Status Comment
WHATWG HTML Living Standard
The definition of 'CanvasRenderingContext2D.clearHitRegions' in that specification.
Living Standard  

Browser compatibility

Feature Chrome Firefox (Gecko) Internet Explorer Opera Safari
Basic support (Yes)[1] 38 (38) [2] Not supported Not supported Not supported
Feature Android Chrome for Android Firefox Mobile (Gecko) IE Mobile Opera Mobile Safari Mobile
Basic support Not supported Not supported 38.0 (38) [2] Not supported Not supported Not supported

[1] This feature is behind a feature flag. Set the flag ExperimentalCanvasFeatures to true to enable it.

[2] This feature is behind a feature preference setting. In about:config, set canvas.hitregions.enabled to true.

See also

Document Tags and Contributors

 Contributors to this page: fscholz
 Last updated by: fscholz,