VRDisplay.isPresenting

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