Simulateur de crédit
Simulateur de mensualités d'emprunt et tableau d'amortissement.
Modifier n'importe quelle valeur pour mettre à jour la mensualité.
Le tableau d'amortissement est vidé dès qu'une valeur est changée.
Afficher la formule
mensualité = montant × (taux/100)/12) / (1−(1+(taux/100)/12)(- nb mois)
Javascript du tableau d'amortissement
((__) => {
'use strict';
const nf = new Intl.NumberFormat("fr-FR", {
style: "currency",
currency: "EUR",
maximumFractionDigits: 2
});
let root = __('#calculator'),
amount = root.find('#amount'),
rate = root.find('#interest-rate'),
duration = root.find('#duration'),
payment = root.find('#monthly-payments'),
rates = root.find('#rate-payments'),
total = root.find('#total-payments'),
header = '<thead>' +
'<tr class="flex no-fit">' +
'<th scope="col" class="xs-2 s-1 text-align-center">Mois</th>' +
'<th scope="col" class="xs-3 s-3">Intérêts</th>' +
'<th scope="col" class="xs-3 s-3">Capital</th>' +
'<th scope="col" class="xs-4 s-5 pr-10">Reste dû</th>' +
'</tr>' +
'</thead>',
caption = '<caption>%s en %s mensualités</caption>',
line = '<tr class="flex no-fit">' +
'<th class="xs-2 s-1 text-align-center" scope="row">%s</th>' +
'<td class="xs-3 s-3">%s</td>' +
'<td class="xs-3 s-3">%s</td>' +
'<td class="xs-4 s-5 pr-s">%s</td>' +
'</tr>',
result = __('#amortization'),
calc = () => {
result.html(null);
let a = amount.val(),
r = rate.val(),
d = duration.val(),
calculate = r > 0
? (a * (r / 100) / 12) / (1 - Math.pow(1 + (r / 100) / 12, -d))
: a / d;
payment.val(!isNaN(calculate) ? nf.format(calculate) : '- ');
rates.val(!isNaN(calculate) ? nf.format(((calculate * d) - a)) : '- ');
total.val(!isNaN(calculate) ? nf.format((calculate * d)) : '- ');
root.on({
submit: (e) => {
e.preventDefault();
result.html(null);
result.append(__.sprintf(caption, nf.format(a), `${d}`));
result.append(header);
let rest = parseInt(a);
let monthRate = ((r/12)/100).toFixed(5);
for(let i = 0; i < d; i++) {
let newRest = rest - (calculate - (monthRate*rest));
if(i%12 === 0) {
result.append(`<tr id="year-${(i/12)+1}">
<td colspan="4">
${(i/12)+1}<sup>${i === 0 ? 'ère': 'ème'}</sup> année
${i > 0 ? ' : '+ nf.format(a-rest)+ ' remboursés':''}
</td>
</tr>`);
}
result.append(__.sprintf(
line,
(i+1),
nf.format(monthRate*rest),
nf.format(calculate - (monthRate*rest)),
(newRest > 0
? nf.format(newRest)
: 0
))
);
rest = newRest;
}
}
});
};
__(document).ready(calc);
root.find('input, select').on('input', calc);
})(jQuery)