Send Message Whatsapp

send.js

function sendMessage() {
  const button = document.querySelector("#startNonContactChat > div");

  button.click();
  const number = "67993109148";
  const input = document.querySelector("div.alerty-content > div > input[type=text]");
  input.value = input.value + number;
  document.querySelector("div.alerty-action > a.btn-ok").click();

  const message = "Mensagem";
  var t = document.querySelector("#main > footer > div._2BU3P.tm2tP.copyable-area > div > div > div._2lMWa > div.p3_M1 > div > div._13NKt.copyable-text.selectable-text");
  var y = document.createTextNode(message);
  t.appendChild(y);
  var mouseEvent = document.createEvent('MouseEvents'); 
  mouseEvent.initEvent('teste', true, true); 
  t.dispatchEvent(mouseEvent); 

}

sendMessage();