ToysRUs price drop percentage

main.js

// test page: https://www.toysrus.com/search?q=dyl01sep17%20creator
// just copy this code in the console on a page
// that has all items with a price drop
var items = document.getElementsByClassName('product-item')
//var prices = items.getElementsByClassName('product-price')
var collection = []
for (var i=0; i<items.length; i++) {
  // get link of item
  var productLink = items[i].href
  var productName = items[i].getElementsByClassName('product-item__product-title')[0].textContent
  
  // fetch prices
  var orgPrice = items[i].getElementsByClassName('tru-price__crossed-out')[0].textContent
  var salePrice = items[i].getElementsByClassName('tru-price__red')[0].textContent
  
  // prep prices
  var orgPriceClean = orgPrice.replace("$", "")
  var salePriceClean = salePrice.replace("$", "")

  // compare .tru-price__crossed-out && .tru-price__red
  var diffPercentage = parseFloat(((Number(salePriceClean) / Number(orgPriceClean))-1)*100).toFixed(0)
  console.log("Price: "+diffPercentage)

  // add % to .product-price
  var newEl = document.createElement('span');
  newEl.className = "tru-price product-price__label product-price__label__sale tru-price__red";
  newEl.style = "color: pink";
  newEl.innerHTML = diffPercentage+"%";
  items[i].getElementsByClassName('product-price')[0].appendChild(newEl);

  // store collection entry
  var currentEntry = {
    name: productName,
    link: productLink,
    price: {
      original: orgPriceClean,
      sale: salePriceClean,
      diff: diffPercentage
    }
  }
  collection.push(currentEntry)
}