MIDIPort: state property

Limited availability

This feature is not Baseline because it does not work in some of the most widely-used browsers.

Secure context: This feature is available only in secure contexts (HTTPS), in some or all supporting browsers.

The state read-only property of the MIDIPort interface returns the state of the port.

Value

A string containing the state of the port, one of:

"disconnected"

The device that this MIDIPort represents is disconnected from the system.

"connected"

The device that this MIDIPort represents is currently connected.

Examples

The following example loops through all input ports and prints the state of each to the console.

js
for (const entry of midiAccess.inputs) {
  const input = entry[1];
  console.log(input.state);
}

Specifications

Specification
Web MIDI API
# dom-midiport-state

Browser compatibility

Report problems with this compatibility data on GitHub
desktopmobile
Chrome
Edge
Firefox
Opera
Safari
Chrome Android
Firefox for Android
Opera Android
Safari on iOS
Samsung Internet
WebView Android
WebView on iOS
state

Legend

Tip: you can click/tap on a cell for more information.

Full support
Full support
No support
No support
See implementation notes.