dentacoin_ico_dollars.js

// ==UserScript==
// @name         Dentacoin ICO $ calculator
// @namespace    http://tampermonkey.net/
// @version      0.1
// @description  try to take over the world!
// @author       Mattblack
// @match        https://www.dentacoin.com/ico/
// @grant        none
// ==/UserScript==

(function() {
    'use strict';

    var formatter = new Intl.NumberFormat('en-US', {
        style: 'currency',
        currency: 'USD',
        minimumFractionDigits: 2
    });

    $(document).ready(function(){
        setTimeout(function(){
            $.get('https://api.gdax.com/products/BTC-USD/ticker', function(response){
                var sold_dcn = parseInt($('#dcndest').text());
                var sold_usd = sold_dcn / 33000000 * response.price;
                var elem = $('<div/>').addClass('h5').html(formatter.format(sold_usd));
                $(elem).insertAfter($('#dcndest'));
            }, 'json');
        }, 2500);
    });
})();