Figure out how much money you have contributed to the music industry by paying for Spotify. Run the following at https://www.spotify.com/se/account/subscription/receipt/.

spotify.js

(function (window) {
  "use strict";
  var isAtTheCorrectURL = location.href.indexOf("account/subscription/receipt/") !== -1;

  if (!isAtTheCorrectURL) {
    console.log("Please run this script at https://www.spotify.com/us/account/subscription/receipt/ after logging in");
    return;
  }
  var payments = document.querySelectorAll("#table-receipts > tbody > tr > td.receipt-price");

  if (payments.length === 0) {
    console.log("It seems like you haven't made any payments, you should start by doing that");
    return;
  }

  var currency = null,
      firstItem = payments[0].innerText;

  if (firstItem.indexOf("kr") !== -1) {
    currency = 'SEK';
  } else if (firstItem.indexOf("$") !== -1) {
    currency = 'USD';
  } else {
    alert("Unknown currency :/");
    return;
  }


  var amount = [].reduce.call(payments, function (previousValue, element) {
    var price = null;

    if (currency === 'SEK') {
      price = element.innerText.replace(',', '.');
      price = price.replace(/[^\d\.]/gi, '');

      return previousValue + parseFloat(price);
    } else if (currency === 'USD') {
      price = element.innerText.replace(/[^\d\.]/gi, '');

      return previousValue + parseFloat(price);
    }

    return null;
  }, 0);

  var message = "I have contributed " + Math.round(amount) + " " + currency + " to the music industry by using @spotify #spotifypays";
  console.log(message)
}(window));