SpeechGrammar: SpeechGrammar() constructor

Non-standard: This feature is not standardized. We do not recommend using non-standard features in production, as they have limited browser support, and may change or be removed. However, they can be a suitable alternative in specific cases where no standard option exists.

Deprecated: This feature is no longer recommended. Though some browsers might still support it, it may have already been removed from the relevant web standards, may be in the process of being dropped, or may only be kept for compatibility purposes. Avoid using it, and update existing code if possible; see the compatibility table at the bottom of this page to guide your decision. Be aware that this feature may cease to work at any time.

The SpeechGrammar() constructor of the SpeechGrammar interface creates a new SpeechGrammar object instance.

Syntax

js
new SpeechGrammar()

Parameters

None.

Specifications

This API has no official W3C or WHATWG specification.

Browser compatibility

desktop mobile
Chrome
Edge
Firefox
Opera
Safari
Chrome Android
Firefox for Android
Opera Android
Safari on iOS
Samsung Internet
WebView Android
WebView on iOS
SpeechGrammar() constructor
Deprecated Non-standard
Chrome – Full support
Chrome 25 (Release date: 2013-02-21)
prefix
prefix Implemented with the vendor prefix: webkit
Edge – Full support
Edge 79 (Release date: 2020-01-15)
prefix
prefix Implemented with the vendor prefix: webkit
Firefox – No support
Firefox 142 (Release date: 2025-08-19)
prefix , disabled
prefix Implemented with the vendor prefix: webkit
disabled From version 142 users must explicitly set the media.webspeech.recognition.enable preference to true. To change preferences in Firefox, visit about:config.
Firefox – No support
Firefox 142 (Release date: 2025-08-19)
disabled
disabled From version 142 users must explicitly set the media.webspeech.recognition.enable preference to true. To change preferences in Firefox, visit about:config.
Opera – Full support
Opera 15 (Release date: 2013-07-02)
prefix
prefix Implemented with the vendor prefix: webkit
Safari – No support
Safari
footnote No support
Chrome Android – Full support
Chrome Android 25 (Release date: 2013-02-27)
prefix
prefix Implemented with the vendor prefix: webkit
Firefox for Android – No support
Firefox for Android
footnote No support
Opera Android – Full support
Opera Android 14 (Release date: 2013-05-21)
prefix
prefix Implemented with the vendor prefix: webkit
Safari on iOS – No support
Safari on iOS
footnote No support
Samsung Internet – Full support
Samsung Internet 1.5 (Release date: 2013-09-25)
prefix
prefix Implemented with the vendor prefix: webkit
WebView Android – No support
WebView Android
footnote No support
WebView on iOS – No support
WebView on iOS
footnote No support

Legend

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

Full support
Full support
No support
No support
Non-standard. Check cross-browser support before using.
Deprecated. Not for use in new websites.
User must explicitly enable this feature.
Requires a vendor prefix or different name for use.
Has more compatibility info.

See also