This is an experimental technology
Because this technology's specification has not stabilized, check the compatibility table for the proper prefixes to use 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 spec changes.
width property returns and sets the width of an
var pxl = offscreen.width; offscreen.width = pxl;
Creating a new offscreen canvas and returning or setting the width of the offscreen canvas:
var offscreen = new OffscreenCanvas(256, 256); offscreen.width; // 256 offscreen.width = 512;
Currently drafted as a proposal: OffscreenCanvas.
|Feature||Chrome||Firefox (Gecko)||Internet Explorer||Opera||Safari|
|Basic support||Not supported||44 (44) ||Not supported||Not supported||Not supported|
|Feature||Android||Firefox Mobile (Gecko)||IE Mobile||Opera Mobile||Safari Mobile|
|Basic support||Not supported||44.0 (44) ||Not supported||Not supported||Not supported|
 This feature is behind a feature preference setting. In about:config, set
OffscreenCanvas, the interface this property belongs to.