greasemonkey script to make it easier to fill in HP Warranty Serial Numbers

hp_user_warranty_fill.js

// ==UserScript==
// @name     Check HP Warranty Data
// @version  1
// @grant    none
// ==/UserScript==


//configure script include to run at https://support.hpe.com/hpsc/wc/public/find



var x = document.createElement("TEXTAREA");
var b = document.createElement("BUTTON");
b.innerHTML = "Fill fields";

x.rows = 20;
x.cols = 100;

b.addEventListener ("click", function(e){
  var data = x.value;
  var dataList = data.split("\n");
  var counter = 0;
  var maxCounter = 20;
  dataList.forEach(function(e){
    if(counter == maxCounter){
      alert("Exceeded Maximum Inputs. Next serial to paste is: " + e);
      counter++
    } else {
      var idString = "serialNumber" + counter;
  		document.getElementById(idString).value = e;
  		counter++;
    }

 
  });

});
document.body.appendChild(x);
document.body.appendChild(b);