Nodejs Number Format format(n, x)

Method Source Code

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,');
};

Related

1. format(decimalPoints,thousandsSep,decimalSep)

   Number.prototype.format=function(decimalPoints,thousandsSep,decimalSep){
     var val=this+'',re=/^(-?)(\d+)/,x,y;
     if (decimalPoints!=null) val = this.toFixed(decimalPoints);
     if (thousandsSep && (x=re.exec(val))){
       for (var a=x[2].split(''),i=a.length-3;i>0;i-=3) a.splice(i,0,thousandsSep);
       val=val.replace(re,x[1]+a.join(''));
     if (decimalSep) val=val.replace(/\./,decimalSep);
     return val;
   ...
   

2. format(digit, separator)

   Number.prototype.format = function(digit, separator)
       if (typeof digit != 'number' || digit > 99) 
           throw new Error('Number.toFormattedString - Wrong argument.');
       var decimals = Math.round(((this - Math.floor(this)) * Math.pow(10, digit))).toString();
       while (digit - decimals.length > 0) 
           decimals = '0' + decimals;
       if (typeof separator != 'string' || separator.length != 1) 
           separator = '.';
       return Math.floor(this).toString() + separator + decimals.substr(0, digit);
   };
   

3. 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) {
   ...
   

4. 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;
   ...
   

5. format(n, x)

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

6. format(n, x)

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

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

   Number.isInteger = Number.isInteger || function(value) {
     return typeof value === 'number' && 
       isFinite(value) && 
       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 || ','));
   ...
   

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) {
     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 || ','));
   };