wa_spam.js

var message = prompt("Enter a message to spam.");
var usernumber = prompt("Enter how often the message will be sent.");
if (message != null && usernumber != null) {  
  var field = document.getElementsByClassName("input")[1];
  counter = 0;  
  function dispatch(target, eventType, char) {    
    var event = document.createEvent("TextEvent");    
    event.initTextEvent (eventType, true, true, window, char, 0, "en-US");    
    target.focus();    
    target.dispatchEvent(event);  
  }  
  function spam() {    
    if (counter<usernumber) {      
      dispatch(field, "textInput", message);      
      var input = document.getElementsByClassName("icon btn-icon icon-send");
      input[0].click();     
      counter++;      
      setTimeout(spam,1);    
    }  
  }  
spam();
}