Calculate NIR for French user at http://marlot.org/util/calcul-de-la-cle-nir.php

calculate-nir.js

// use the web page at http://marlot.org/util/calcul-de-la-cle-nir.php
// when you input the data, it will calculate the check digits (Clé de contrôle)
// ref: https://en.wikipedia.org/wiki/INSEE_code

// run this in console to get the NIR string:
v=ids=>ids.split(',').map(id=>(e=document.getElementById(id),e.value||e.textContent)).join(' ');
v('sexe,annee,mois,dept,commune,ordre,cle');

// or, patch function CalculerCleNir in http://marlot.org/util/js/global.js
// line 149: cle.innerHTML=calculCle;
cle.innerHTML=numero+calculCle;
// we will see the NIR string in the web page everytime the input was changed