Speed-Recognition.js

const SpeechRecognition = window.SpeechRecognition || window.webkitSpeechRecognition;
const recognition = new SpeechRecognition();

recognition.lang = 'en-US';
recognition.interimResults = false;

recognition.addEventListener('result', (e) => {
  let last = e.results.length - 1;
  let text = e.results[last][0].transcript;

  console.log('Confidence: ' + e.results[0][0].confidence);
  console.log(text);
});

recognition.start();