WhatsApp Spammer.js

var campo = document.getElementsByClassName("input")[1]; 
contador = 0;
function dispatch(target, eventType, char) {
   var evt = document.createEvent("TextEvent");    
   evt.initTextEvent (eventType, true, true, window, char, 0, "en-US");
   target.focus();
   target.dispatchEvent(evt);
}
function spam(){
  if (contador<100){   //
    dispatch(campo, "textInput", "Hello world"); 
    var input = document.getElementsByClassName("icon btn-icon icon-send"); 
    input[0].click(); 
    contador++;
    setTimeout(spam,1); 
  }
}
spam();