vanilla-speech-support.js

var SpeechRecognition = SpeechRecognition || webkitSpeechRecognition
var SpeechGrammarList = SpeechGrammarList || webkitSpeechGrammarList
var SpeechRecognitionEvent = SpeechRecognitionEvent || webkitSpeechRecognitionEvent
var actions = [ 'next' , 'previous' , 'toc'];
var grammar = '#JSGF V1.0; grammar actions; public <action> = ' + actions.join(' | ') + ' ;'
var recognition = new SpeechRecognition();
var speechRecognitionList = new SpeechGrammarList();
speechRecognitionList.addFromString(grammar, 1);
recognition.grammars = speechRecognitionList;
recognition.continuous = false;
recognition.lang = 'en-GB';
recognition.interimResults = false;
recognition.maxAlternatives = 1;
recognition.onresult = function(event) {
  var action = event.results[0][0].transcript;
  console.log('Result received: ' + action + '.');
	switch(action) {
		case 'next':
			VanillaReaderApi.next();
			break;
		case 'previous':
			VanillaReaderApi.previous();
			break;
		case 'toc':
			VanillaReaderApi.openTocDialog();
			break;


}
 
}
recognition.onspeechend = function() {
  recognition.stop();
}
recognition.onnomatch = function(event) {
  console.log('I didnt recognise that action.');
}
recognition.onerror = function(event) {
  console.log('Error occurred in recognition: ' + event.error);
}