Nodejs Number Format commafy()

Method Source Code

Number.prototype.commafy = function () {
   return String(this).commafy();
}

String.prototype.commafy = function () {
   return this.replace(/(^|[^\w.])(\d{4,})/g, function($0, $1, $2) {
      return $1 + $2.replace(/\d(?=(?:\d\d\d)+(?!\d))/g, "$&,");
   });/*from  w  ww  . j a va 2  s  . c  om*/
}

Related

1. withCommas()

   Number.prototype.withCommas = function() {
     var num = this;
     return this.toString().replace(/\B(?=(\d{3})+(?!\d))/g, ",");
   

2. addTrailingZero()

   Number.prototype.addTrailingZero = function(){
     if(this < 10)  return "0"+this;
     else  return this;
   };
   

3. addZero()

   Number.prototype.addZero=function(){
       var val=(this+"");
       val=((2>val.length)?("0"+val):val);
       return val;
   

4. comma()

   var d3 = /(\d+)(\d{3})/;
   Number.prototype.comma = function() {
       var s = this.toString();
       while (d3.test(s)) s = s.replace(d3, '$1,$2');
       return s;
   };
   

5. commafy()

   Number.prototype.commafy = function () {
     return String(this).commafy();
   

6. format()

   Number.prototype.format = function () {
     var str = this.toString();
     var Re = /[^0-9]/g;
     var ReN = /(-?[0-9]+)([0-9]{3})/;
     str = str.replace(Re,'');              
     while (ReN.test(str)) { 
       str = str.replace(ReN, "$1,$2"); 
     return str;
   ...
   

7. format()

   Number.prototype.format = function() {
     var n = this, decPlaces = 2, decSeparator = ".", thouSeparator = ",", sign = n < 0 ? "-" : "", i = parseInt( n = Math.abs(+n || 0).toFixed(decPlaces)) + "", j = ( j = i.length) > 3 ? j % 3 : 0;
     return sign + ( j ? i.substr(0, j) + thouSeparator : "") + i.substr(j).replace(/(\d{3})(?=\d)/g, "$1" + thouSeparator) + ( decPlaces ? decSeparator + Math.abs(n - i).toFixed(decPlaces).slice(2) : "");
   };
   function isNumber(n) {
     return !isNaN(parseFloat(n)) && isFinite(n);
   var dayNames = new Array("Duminica", "Luni", "Marti", "Miercuri", "Joi", "Vineri", "Sambata");
   var monthNames = new Array("Ianuarie", "Februarie", "Martie", "Aprilie", "Mai", "Iunie", "Iulie", "August", "Septembrie", "Octobmrie", "Noiembrie", "Decembrie");
   ...
   

8. 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;
   ...
   

9. 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);
   };