main.js

const
    DELAY = 500,

    URL_LINK_PREEV = 'http://preev.com/xdg/eur',
    URL_LINK_CRYPTSY = 'https://www.cryptsy.com/markets/view/132',
    URL_LINK_BTCTURK = 'https://www.btcturk.com/Exchange/FastSellBtc',

    URL_JSON_BTCTURK = 'https://www.btcturk.com/api/ticker',
    URL_JSON_CRYPTSY = 'https://www.cryptsy.com/orders/ajaxorderslist2/132',
    URL_JSON_CURRENCY = 'http://api.piyasa.com/json/?kaynak=doviz_guncel_serb',
    URL_JSON_PREEV = 'http://preev.com/pulse/units:xdg+eur/sources:bter+cryptsy+bitfinex+bitstamp+btce+bter+cryptsy+kraken+localbitcoins+btce+kraken';

var timer;

var ccb = {
    calculate: function () {
        const values = 'div.values .text-right h3';

        var ciEuro = parseFloat($('input.dcAmountInEuro').val()),
            ciDoge = parseFloat($('#dcAmountInDogecoin').text());

        $(values).html('&nbsp;<i class="fa fa-spinner fa-spin"></i>');

        if (!ciDoge || isNaN(ciDoge)) {
            $(values).html('&nbsp;');
        }
        else {
            ciDoge = ciDoge.toFixed(4);

            $.getJSON(URL_JSON_PREEV, function (data) {
                var btcDogeRate = parseFloat(data.xdg.btc.bter.last);
                var btceEuroRate = parseFloat(data.eur.btc.btce.last);
                var krakenEuroRate = parseFloat(data.eur.btc.kraken.last);

                var btcEuroRate = (btceEuroRate + krakenEuroRate) / 2;
                var dogeEuroRate = btcDogeRate / btcEuroRate;

                var marketDoge = (ciEuro / dogeEuroRate).toFixed(4);
                var marketEuro = (ciDoge * dogeEuroRate).toFixed(4);

                $.getJSON(URL_JSON_CRYPTSY, function (data) {
                    var cryptsyBtc = 0,
                        satoshi = data.buy[15][0];

                    cryptsyBtc = (ciDoge * satoshi).toFixed(8);
                    cryptsyBtc -= cryptsyBtc / 100 * .25;
                    cryptsyBtc = cryptsyBtc.toFixed(8);

                    $.getJSON(URL_JSON_BTCTURK, function (data) {
                        var bid = data.bid;
                        var btcTurkTry = ((cryptsyBtc - 0.001) * bid).toFixed(4);

                        $.getJSON(URL_JSON_CURRENCY, function (data) {
                            var currEuroRate = $.grep(data, function (e) {
                                return e.foex == 'EUR';
                            })[0].sell;

                            var btcTurkEuro = (btcTurkTry / currEuroRate).toFixed(4);

                            $('div.ci-doge-amount h3').text(ciDoge);

                            $('div.market-doge-amount h3').html('<a href="' + URL_LINK_PREEV + '" target="_blank">' + marketDoge + '</a>');
                            $('div.market-euro-price h3').html('<a href="' + URL_LINK_PREEV + '" target="_blank">€ ' + marketEuro + '</a>');
                            $('div.cryptsy-btc-amount h3').html('<a href="' + URL_LINK_CRYPTSY + '" target="_blank">฿ ' + cryptsyBtc + '</a>');
                            $('div.btcturk-tl-price h3').html('<a href="' + URL_LINK_BTCTURK + '" target="_blank">₺ ' + btcTurkTry + '</a>');
                            $('div.btcturk-euro-price h3').html('<a href="' + URL_LINK_BTCTURK + '" target="_blank">€ ' + btcTurkEuro + '</a>');
                        });
                    });
                });
            });
        }
    },

    addBox: function () {
        $('div.contentpanel div.row').append('' +
            '<div class="col-md-12" style="max-width: 800px;">' +
            '   <div class="panel panel-default">' +
            '       <div class="panel-heading"><p>"Amount" alanına çevrilmesini istediğiniz tutarı giriniz</p></div>' +
            '       <div class="panel-body">' +
            '           <div class="row values">' +
            '               <div class="col-md-7">CoIntellect\'in verdiği Doge miktarı</div>' +
            '               <div class="col-md-5 text-right ci-doge-amount"><h3>&nbsp;</h3></div>' +
            '               <div class="col-md-7">Aynı ödemeyle piyasada alınabilecek Doge miktarı</div>' +
            '               <div class="col-md-5 text-right market-doge-amount"><h3>&nbsp;</h3></div>' +
            '               <div class="col-md-7">CoIntellect\'in verdiği Doge\'ların piyasa değeri (Euro)</div>' +
            '               <div class="col-md-5 text-right market-euro-price"><h3>&nbsp;</h3></div>' +
            '               <div class="col-md-7">CoIntellect\'in verdiği Doge\'ların Cryptsy değeri (BTC)</div>' +
            '               <div class="col-md-5 text-right cryptsy-btc-amount"><h3>&nbsp;</h3></div>' +
            '               <div class="col-md-7">CoIntellect\'in verdiği Doge\'ların BTCTurk değeri (TL)</div>' +
            '               <div class="col-md-5 text-right btcturk-tl-price"><h3>&nbsp;</h3></div>' +
            '               <div class="col-md-7">CoIntellect\'in verdiği Doge\'ların BTCTurk değeri (Euro)</div>' +
            '               <div class="col-md-5 text-right btcturk-euro-price"><h3>&nbsp;</h3></div>' +
            '           </div>' +
            '       </div>' +
            '   </div>' +
            '</div>' +
            '');
    },
    addAction: function () {
        $('input.dcAmountInEuro').keyup(function () {
            window.clearTimeout(timer);

            timer = window.setTimeout(function () {
                ccb.calculate();
            }, DELAY);
        });

        $('div.datainfo:first h4 > a').click(function (event) {
            event.preventDefault();
            $('input.dcAmountInEuro').val($(this).text().match(/([0-9\.]+)/g)[0]).keyup();
        });
    },
    init: function () {
        this.addBox();
        this.addAction();
    }
};

ccb.init();