<h2>Extensions to the <dfn>Navigator</dfn> interface</h2>

<pre class="idl">

};

</pre>

<dl>

<h2 id="MIDIMessageEvent"><dfn>MIDIMessageEvent</dfn> Interface</h2>

<p>An event object implementing this interface is passed to a MIDIInput's onmidimessage handler when MIDI messages are received. Note that the DOM <a>Event</a> <code>timeStamp</code> attribute is defined as a <a>DOMHighResTimeStamp</a>, and represents the high-resolution time of when the event was received or is to be sent.</p>

<pre class="idl">

interface MIDIMessageEvent: Event {

readonly attribute Uint8Array data;

};

for new devices infrequently. As such, it is suggested that heavy

reliance on connection events not be used.</p>

<pre class="idl">

interface MIDIConnectionEvent: Event {

readonly attribute MIDIPort port;

};