Window: vrdisplaypresentchange event - Web APIs 编辑

The vrdisplaypresentchange event of the WebVR API is fired when the presenting state of a VR display changes — i.e. goes from presenting to not presenting, or vice versa.

Examples

You can use the vrdisplaypresentchange event in an addEventListener method:

window.addEventListener('vrdisplaypresentchange', function() {
  if(vrDisplay.isPresenting) {
    info.textContent = 'Display has started presenting.';
  } else {
    info.textContent = 'Display has stopped presenting.';
  }
  reportDisplays();
});

Or use the onvrdisplaypresentchange event handler property:

window.onvrdisplaypresentchange = function() {
  if(vrDisplay.isPresenting) {
    info.textContent = 'Display has started presenting.';
  } else {
    info.textContent = 'Display has stopped presenting.';
  }
  reportDisplays();
};

Specifications

Browser compatibility

BCD tables only load in the browser

See also

• WebVR API homepage
• MozVr.com — demos, downloads, and other resources from the Mozilla VR team.