VoiceRecognition.js

var recog = new SpeechRecognition();
recog.addEventListener('result', function (event) {
  for (var i = event.resultIndex; i < event.results.length; i++) {
     if (event.results[i].isFinal) {
        console.log(event.results[i][0].transcript);
     }
  }
});
recog.start();