Get how much money you already have spend on Capitainetrain.com

details_per_years.js

var t = {'total': 0, 'detail': {}};
$.each(document.getElementsByClassName('folder'),
    function(k, v){
        var date_str = v.getElementsByClassName('large-date')[0].title;
        var year = date_str.slice(-4);
        var price = parseFloat(v.getElementsByClassName('folder__price-label')[0].textContent.replace(/€/, '').replace(/ /, '').replace(',', '.'));
        if(!t.detail[year]){
            t.detail[year] = {'total': 0, 'tickets': []};
        }
        t.detail[year].tickets.push({'price': price, 'date_str': date_str});
        t.detail[year].total += price;
        t.total += price;
    }
);
console.log(t);

total_money_spend_on_capitainetrain.js

/*
 On tickets page (https://www.capitainetrain.com/tickets), you need to scroll down to your first ticket.
 Then, open the developer console of your browser and paste this code.
 
 Price on English interface: €XX.XX
 Price on French interface: XX,XX €
*/

var devise = "€", t = 0;
$('.folder__price-label').each(
    function(k, v){
        var i = v.innerHTML.replace(/€/, '').replace(/ /, '').replace(',', '.');
        t += parseFloat(i);
    }
);
console.log(t + devise);

/* Functional way */
$.makeArray($('.folder__price-label')).reduce(
    function(sum, e){ 
        return sum + parseFloat(e.innerHTML.replace(/€/, '').replace(/ /, '').replace(',', '.'))
    }, 0);