Available on HTML5
SpeechSynthesis interface of the Web Speech API is the controller interface for the speech service; this can be used to retrieve information about the synthesis voices available on the device, start and pause speech, and other commands besides.
Boolean that returns
true if the utterance queue contains as-yet-unspoken utterances.
Returns a list of
SpeechSynthesisVoice objects representing all the available voices on the current device.
SpeechSynthesis object into a non-paused state: resumes it if it was already paused.