voiceschanged

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  1. Examples
  2. Inheritance
  3. Specifications
  4. Browser compatibility
  5. See also

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

The voiceschanged event of the Web Speech API is fired when the list of SpeechSynthesisVoice objects that would be returned by the SpeechSynthesis.getVoices() method has changed (when the voiceschanged event fires.)

Bubbles No
Cancelable No
Target objects SpeechSynthesis
Interface Event

Examples

This could be used to repopulate a list of voices that the user can choose between when the event fires:

var synth = window.speechSynthesis;

  ...

synth.onvoicechanged = function() {
  var voices = synth.getVoices();

  for(i = 0; i < voices.length ; i++) {
    var option = document.createElement('option');
    option.textContent = voices[i].name + ' (' + voices[i].lang + ')';
    option.setAttribute('data-lang', voices[i].lang);
    option.setAttribute('data-name', voices[i].name);
    voiceSelect.appendChild(option);
  }
}

Inheritance

The voicechanged event implements the Event interface — it has available the properties and methods defined on this interface.

Specifications

Specification Status Comment
Web Speech API
The definition of 'speech synthesis events' in that specification.		 Draft  

Browser compatibility

We're converting our compatibility data into a machine-readable JSON format. This compatibility table still uses the old format, because we haven't yet converted the data it contains. Find out how you can help!

Feature Chrome Edge Firefox (Gecko) Internet Explorer Opera Safari (WebKit)
Basic support 33 (Yes) 48 (48) [1] No support No support No support
Feature Android Chrome Edge Firefox Mobile (Gecko) Firefox OS IE Phone Opera Mobile Safari Mobile
Basic support (Yes) (Yes) (Yes) ? 2.5 No support No support No support
  • [1] Can be enabled via the media.webspeech.synth.enabled flag in about:config.

See also

Document Tags and Contributors

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Contributors to this page: erikadoyle, mkato, chrisdavidmills
Last updated by: erikadoyle,