Web/API/SpeechRecognitionErrorEvent/error

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

The error read-only property of the SpeechRecognitionErrorEvent interface returns the type of error raised.

Syntax

var myError = event.error;

Value

A DOMString naming the type of error. The possible error types are:

no-speech: No speech was detected.
aborted: Speech input was aborted in some manner, perhaps by some user-agent-specific behavior like a button the user can press to cancel speech input.
audio-capture: Audio capture failed.
network: Network communication required for completing the recognition failed.
not-allowed: The user agent disallowed any speech input from occurring for reasons of security, privacy or user preference.
service-not-allowed: The user agent disallowed the requested speech recognition service, either because the user agent doesn't support it or because of reasons of security, privacy or user preference. In this case it would allow another more suitable speech recognition service to be used instead.
bad-grammar: There was an error in the speech recognition grammar or semantic tags, or the chosen grammar format or semantic tag format was unsupported.
language-not-supported: The language was not supported.

Examples

var recognition = new SpeechRecognition();

recognition.onerror = function(event) {
  console.log('Speech recognition error detected: ' + event.error);
  console.log('Additional information: ' + event.message);
}

Specifications

Specification	Status	Comment
Web Speech APIThe definition of 'error' in that specification.	Draft

Browser compatibility

Update compatibility data on GitHub

	Desktop						Mobile
	Chrome	Edge	Firefox	Internet Explorer	Opera	Safari	Android webview	Chrome for Android	Firefox for Android	Opera for Android	Safari on iOS	Samsung Internet
`error` Experimental'	Chrome Full support 77	Edge Full support 79	Firefox No support No	IE No support No	Opera No support No	Safari No support No	WebView Android Full support 77	Chrome Android Full support 77	Firefox Android No support No	Opera Android No support No	Safari iOS No support No	Samsung Internet Android Full support 12.0

Legend

Full support: Full support
No support: No support
Experimental. Expect behavior to change in the future.': Experimental. Expect behavior to change in the future.

Firefox OS permissions

To use speech recognition in an app, you need to specify the following permissions in your manifest:

"permissions": {
  "audio-capture" : {
    "description" : "Audio capture"
  },
  "speech-recognition" : {
    "description" : "Speech recognition"
  }
}

You also need a privileged app, so you need to include this as well:

  "type": "privileged"