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 <var>ctx.clearHitRegions();</var>
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
License
© 2016 Mozilla Contributors
Licensed under the Creative Commons Attribution-ShareAlike License v2.5 or later.
https://developer.mozilla.org/en-us/docs/web/api/canvasrenderingcontext2d/clearhitregions