js-number-format/src/js-number-format.js

Conjunto de funciones javascript para mostrar números con formato

// Esta función es de phpjs.org
function number_format (number, decimals, dec_point, thousands_sep, truncate = false) {
    number = (number + '').replace(/[^0-9+\-Ee.]/g, '');
    var n = !isFinite(+number) ? 0 : +number,
        prec = !isFinite(+decimals) ? 0 : Math.abs(decimals),
        sep = (typeof thousands_sep === 'undefined') ? ',' : thousands_sep,
        dec = (typeof dec_point === 'undefined') ? '.' : dec_point,
        s = '',
        toFixedFix = function (n, prec) {
            var k = Math.pow(10, prec);
            return '' + Math.round(n * k) / k;
        };
    if( truncate ){
        s = (prec ? toFixedFix(n, prec) : '' + Math.floor(n)).split('.');
    }else{ // round
        s = (prec ? toFixedFix(n, prec) : '' + Math.round(n)).split('.');
    }
    
    if (s[0].length > 3) {
        s[0] = s[0].replace(/\B(?=(?:\d{3})+(?!\d))/g, sep);
    }
    if ((s[1] || '').length < prec) {
        s[1] = s[1] || '';
        s[1] += new Array(prec - s[1].length + 1).join('0');
    }
    return s.join(dec);
}

export function n( numero, truncate = false ){
  return number_format(numero, 0, ',', '.', truncate);
}
export function d( numero, truncate = false ){
  return number_format(numero, 2, ',', '.', truncate);
}
export function m( numero, truncate = false ){
  return '$ ' + number_format(numero, 0, ',', '.', truncate);
}