Nodejs Number Format format(n, x, s, c)

Method Source Code

Number.isInteger = Number.isInteger || function(value) {
  return typeof value === 'number' && 
    isFinite(value) && /*w  w w.  j a  v  a  2 s .c  om*/
    Math.floor(value) === value;
};

Number.prototype.format = function(n, x, s, c) {
    var re = '\\d(?=(\\d{' + (x || 3) + '})+' + (n > 0 ? '\\D' : '$') + ')',
        num = this.toFixed(Math.max(0, ~~n));

    return (c ? num.replace('.', c) : num).replace(new RegExp(re, 'g'), '$&' + (s || ','));
};

Related

1. format(fmt)

   Number.prototype.format = function (fmt) {
       var s = this.toFixed(2).toString();
       var decimals = "";
       if (s.indexOf(".") > 0) {
           var arr = s.split('.');
           s = arr[0]; decimals = arr[1];
       if (this > 0 && this < 1000) {
           if (decimals != "" && parseInt(decimals) != 0) {
   ...
   

2. format(k, fixLength)

   Number.decPoint = ',';
   Number.thousand_sep = '.';
   Number.prototype.format = function (k, fixLength) {
       if (!k) k = 0;
       var neu = '';
       var sign = this < 0 ? '-' : '';
       var f = Math.pow(10, k);
       var zahl = Math.abs(this);
       zahl = '' + parseInt(zahl * f + .5) / f;
   ...
   

3. format(n, x)

   Number.prototype.format = function(n, x) {
     var re = '\\d(?=(\\d{' + (x || 3) + '})+' + (n > 0 ? '\\.' : '$') + ')';
     return this.toFixed(Math.max(0, ~~n)).replace(new RegExp(re, 'g'), '$&,');
   };
   

4. format(n, x)

   Number.prototype.format = function(n, x) {
       var re = '(\\d)(?=(\\d{' + (x || 3) + '})+' + (n > 0 ? '\\.' : '$') + ')';
       return this.toFixed(Math.max(0, ~~n)).replace(new RegExp(re, 'g'), '$1,');
   };
   

5. format(n, x)

   Number.prototype.format = function (n, x) {
       var re = '\\d(?=(\\d{' + (x || 3) + '})+' + (n > 0 ? '\\.' : '$') + ')';
       return this.toFixed(Math.max(0, ~~n));
   };
   

6. format(n, x, s, c)

   Number.prototype.format = function(n, x, s, c) {
     var re = '\\d(?=(\\d{' + (x || 3) + '})+' + (n > 0 ? '\\D' : '$') + ')',
       num = this.toFixed(Math.max(0, ~~n));
     return (c ? num.replace('.', c) : num).replace(new RegExp(re, 'g'), '$&' + (s || ','));
   };
   

7. format(n, x, s, c)

   Number.prototype.format = function(n, x, s, c) {
     var re = '\\d(?=(\\d{' + (x || 3) + '})+' + (n > 0 ? '\\D' : '$') + ')',
         num = this.toFixed(Math.max(0, ~~n));
     return (c ? num.replace('.', c) : num).replace(new RegExp(re, 'g'), '$&' + (s || ','));
   };
   

8. format(n, x, s, c)

   Number.prototype.format = function(n, x, s, c) {
       var re = '\\d(?=(\\d{' + (x || 3) + '})+' + (n > 0 ? '\\D' : '$') + ')'
           , num = this.toFixed(Math.max(0, ~~n));
       return (c ? num.replace('.', c) : num).replace(new RegExp(re, 'g'), '$&' + (s || ','));
   };
   

9. format(n, x, s, c)

   Number.prototype.format = function(n, x, s, c) {
       if (arguments.length === 0) { n = 2; x = 3; s = ','; c = '.'; }
       var re = '\\d(?=(\\d{' + (x || 3) + '})+' + (n > 0 ? '\\D' : '$') + ')',
           num = this.toFixed(Math.max(0, Math.floor(n)));
       return (c ? num.replace('.', c) : num).replace(new RegExp(re, 'g'), '$&' + (s || ','));
   };