format.js

<script>
  // load a language
    numeral.language('fr', {
        delimiters: {
            thousands: ' ',
            decimal: ','
        },
        abbreviations: {
            thousand: 'k',
            million: 'm',
            billion: 'b',
            trillion: 't'
        },
        ordinal : function (number) {
            return number === 1 ? 'er' : 'ème';
        },
        currency: {
            symbol: '€'
        }
    });

// switch between languages
    numeral.language('fr');
  </script>