Monthly Payments for Buying a Home on ImmobilienScout24.de

tampermonkey.userscript.js

// ==UserScript==
// @name         Monthly Payments for Buying a Home
// @namespace    http://tampermonkey.net/
// @version      0.1
// @description  show monthly payments (Hausgeld + mortgage rate) given a sales expose and user-definable down payment
// @author       [email protected]
// @match        https://www.immobilienscout24.de/*
// @grant        none
// @require http://code.jquery.com/jquery-latest.js
// ==/UserScript==

(function() {
    'use strict';
    function getPrice(priceString) {
        return priceString.replace(/ /g, '').replace('.', '').replace('€', '');
    }

    function getPrices(pricesString) {
        return pricesString.split('-').map(getPrice);
    }

    function getRate(price) {
        // later use .toLocaleString()
        return (price / 300).toFixed(2).replace('.', ',');
    }
    $(document).ready(function() {
        $('div.result-list-entry__criteria').each(function(i, el) {
            if (i<2) console.log('entry: ' + i);
            var price_element = $(el).find('dl.result-list-entry__primary-criterion:eq(0) > dd');
            // debugging: price_element.css('background-color', '#f99');
            var prices = getPrices(price_element.text());

            var monthly_rates = prices.map(getRate).join(' - ');
            var html = '<dl class="grid-item result-list-entry__primary-criterion ">' +
                '<dd class="font-nowrap font-line-xs">' + monthly_rates + ' €</dd>' +
                '<dt class="font-s onlyLarge">mtl. Rate</dt>' +
                '</dl>';
            var element_last = $(el).find('dl.result-list-entry__primary-criterion:eq(2)');
            $(html).insertAfter(element_last);
        });
    });
})();