how to text to speech in js code example

Example 1: how to do text to speech in javascript

var msg = new SpeechSynthesisUtterance();
msg.text = "Hello World";
window.speechSynthesis.speak(msg);

Example 2: speech to text in js

function readOutLoud(message) {
  var speech = new SpeechSynthesisUtterance();

  // Set the text and voice attributes.
  speech.text = message;
  speech.volume = 1;
  speech.rate = 1;
  speech.pitch = 1;

  window.speechSynthesis.speak(speech);
}