registerProtocolHandlerThe navigator.registerProtocolHandler() method declares a site's ability to handle an address scheme (also known as a protocol). For example, an email site can register to open mailto: URLs or a VoIP site to open tel: URLs.limitedhttps://html.spec.whatwg.org/multipage/system-state.html#custom-handlershttps://developer.mozilla.org/docs/Web/API/Navigator/registerProtocolHandlerapi.Navigator.registerProtocolHandlerapi.Navigator.registerProtocolHandler.scheme_parameter_bitcoinapi.Navigator.registerProtocolHandler.scheme_parameter_ftpapi.Navigator.registerProtocolHandler.scheme_parameter_ftpsapi.Navigator.registerProtocolHandler.scheme_parameter_geoapi.Navigator.registerProtocolHandler.scheme_parameter_imapi.Navigator.registerProtocolHandler.scheme_parameter_ircapi.Navigator.registerProtocolHandler.scheme_parameter_ircsapi.Navigator.registerProtocolHandler.scheme_parameter_magnetapi.Navigator.registerProtocolHandler.scheme_parameter_mailtoapi.Navigator.registerProtocolHandler.scheme_parameter_matrixapi.Navigator.registerProtocolHandler.scheme_parameter_mmsapi.Navigator.registerProtocolHandler.scheme_parameter_newsapi.Navigator.registerProtocolHandler.scheme_parameter_nntpapi.Navigator.registerProtocolHandler.scheme_parameter_openpgp4fprapi.Navigator.registerProtocolHandler.scheme_parameter_sftpapi.Navigator.registerProtocolHandler.scheme_parameter_sipapi.Navigator.registerProtocolHandler.scheme_parameter_smsapi.Navigator.registerProtocolHandler.scheme_parameter_smstoapi.Navigator.registerProtocolHandler.scheme_parameter_sshapi.Navigator.registerProtocolHandler.scheme_parameter_telapi.Navigator.registerProtocolHandler.scheme_parameter_urnapi.Navigator.registerProtocolHandler.scheme_parameter_webcalapi.Navigator.registerProtocolHandler.scheme_parameter_wtaiapi.Navigator.registerProtocolHandler.scheme_parameter_xmppapi.Navigator.registerProtocolHandler.secure_context_requiredapi.Navigator.unregisterProtocolHandlerhttps://nowyoucanuse.com/features--registerprotocolhandler.html