SpeechRecognitionErrorEvent.error

This is an experimental technology
Check 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 API
The definition of 'error' in that specification.
Draft

Browser compatibility

Update compatibility data on GitHub
DesktopMobile
ChromeEdgeFirefoxInternet ExplorerOperaSafariAndroid webviewChrome for AndroidFirefox for AndroidOpera for AndroidSafari on iOSSamsung Internet
error
Experimental
Chrome Full support 77Edge Full support 79Firefox No support NoIE No support NoOpera No support NoSafari No support NoWebView Android Full support 77Chrome Android Full support 77Firefox Android No support NoOpera Android No support NoSafari iOS No support NoSamsung 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"

See also