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This is an experimental technology
Check the Browser compatibility table carefully before using this in production.

The MIDIConnectionEvent interface of the Web MIDI API is the event passed to the onstatechange event of the MIDIAccess interface and the onstatechange event of the MIDIPorts interface. This occurs any time a new port becomes available, or when a previously available port becomes unavailable. For example, this event is fired whenever a MIDI device is either plugged in to or unplugged from a computer.  

Constructor

MIDIConnectionEvent.MIDIConnectionEvent
Creates a new MIDIConnectionEvent object.

Properties

MIDIConnectionEvent.port
Returns a reference to a MIDIPort instance for a port that has been connected or disconnected."

Examples

 

Specifications

Specification Status Comment
Web MIDI API Working Draft Initial definition.

Browser compatibility

Update compatibility data on GitHub
DesktopMobile
ChromeEdgeFirefoxInternet ExplorerOperaSafariAndroid webviewChrome for AndroidFirefox for AndroidOpera for AndroidSafari on iOSSamsung Internet
MIDIConnectionEventChrome Full support 43Edge ? Firefox ? IE No support NoOpera Full support 30Safari ? WebView Android Full support 43Chrome Android Full support 43Firefox Android ? Opera Android Full support 30Safari iOS ? Samsung Internet Android Full support 4.0
MIDIConnectionEvent() constructor
Experimental
Chrome Full support 43Edge ? Firefox ? IE No support NoOpera Full support 30Safari ? WebView Android Full support 43Chrome Android Full support 43Firefox Android ? Opera Android Full support 30Safari iOS ? Samsung Internet Android ?
port
ExperimentalNon-standard
Chrome Full support 43Edge ? Firefox ? IE No support NoOpera Full support 30Safari ? WebView Android Full support 43Chrome Android Full support 43Firefox Android ? Opera Android Full support 30Safari iOS ? Samsung Internet Android ?

Legend

Full support  
Full support
No support  
No support
Compatibility unknown  
Compatibility unknown
Experimental. Expect behavior to change in the future.
Experimental. Expect behavior to change in the future.
Non-standard. Expect poor cross-browser support.
Non-standard. Expect poor cross-browser support.

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