This is an experimental technology
Check the Browser compatibility table carefully before using this in production.
The default read-only property of the SpeechSynthesisVoice interface returns a Boolean indicating whether the voice is the default voice for the current app (true), or not (false.)
Note: For some devices, it might be the default voice for the voice's language. The spec is not very clear on which it should be, so some implementations may differ.
Syntax
var amIDefault = speechSynthesisVoiceInstance.default;
Value
A Boolean.
Examples
for(i = 0; i < voices.length ; i++) {
var option = document.createElement('option');
option.textContent = voices[i].name + ' (' + voices[i].lang + ')';
if(voices[i].default) {
option.textContent += ' -- DEFAULT';
}
option.setAttribute('data-lang', voices[i].lang);
option.setAttribute('data-name', voices[i].name);
voiceSelect.appendChild(option);
}
Specifications
| Specification | Status | Comment |
|---|---|---|
| Web Speech API The definition of 'default' in that specification. |
Draft |
Browser compatibility
The compatibility table on this page is generated from structured data. If you'd like to contribute to the data, please check out https://github.com/mdn/browser-compat-data and send us a pull request.
Update compatibility data on GitHub
| Desktop | Mobile | ||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
default | Chrome Full support 33 | Edge Full support 14 | Firefox Full support 49 | IE No support No | Opera Full support 21 | Safari Full support 7 | WebView Android Full support 4.4.3 | Chrome Android Full support 33 | Edge Mobile Full support Yes | Firefox Android
Full support
62
| Opera Android No support No | Safari iOS Full support 7.1 | 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.
- User must explicitly enable this feature.
- User must explicitly enable this feature.