Experimental
This is an experimental technology
Check the Browser compatibility table carefully before using this in production.
The isPresenting
read-only property of the VRDisplay
interface returns a Boolean
indicating whether the VRDisplay
is currently having content presented through it.
Syntax
var isItPresenting = vrDisplayInstance.isPresenting;
Value
A Boolean
; true
means the display is presenting; false
means it isn't.
Examples
function onVRExitPresent () {
// No sense in exiting presentation if we're not actually presenting.
// (This may happen if we get an event like vrdisplaydeactivate when
// we weren't presenting.)
if (!vrDisplay.isPresenting)
return;
vrDisplay.exitPresent().then(function () {
// Nothing to do because we're handling things in onVRPresentChange.
}, function (err) {
var errMsg = "exitPresent failed.";
if (err && err.message) {
errMsg += "<br/>" + err.message
}
VRSamplesUtil.addError(errMsg, 2000);
});
}
Note: Code snippet taken from Google's VR Presentation demo.
Specifications
Specification | Status | Comment |
---|---|---|
WebVR 1.1 The definition of 'isPresenting' in that specification. |
Draft | Initial definition |
Browser compatibility
BCD tables only load in the browser
See also
- WebVR API homepage
- https://mixedreality.mozilla.org/ — demos, downloads, and other resources from the Mozilla VR team.