The Presentation API lets a user agent (such as a Web browser) effectively display web content through large presentation devices such as projectors and network-connected televisions. Supported types of multimedia devices include both displays which are wired using HDMI, DVI, or the like, or wireless, using DLNA, Chromecast, AirPlay, or Miracast....style="display: none;">Present</button> <script> // The Present button is visible...handleAvailabilityCh(true); }); </script> Starting a new presentation...