Nodejs Number Format format(thousandSep, decPoint)

Method Source Code

Number.THOUSAND_STEP = ",";
Number.DECIMAL_POINT = ".";
Number.prototype.format = function(thousandSep, decPoint) {
   var decimal, str;
   thousandSep = thousandSep || Number.THOUSAND_STEP;
   decPoint = decPoint || Number.DECIMAL_POINT;
   decimal = this.toString().split(".");
   str = Math.abs(this)/*from   www .j ava  2  s .  co  m*/
      .toFixed(0)
      .toString()
      .replace(/\B(?=(\d{3})+(?!\d))/g, thousandSep);
   if(decimal.length === 2) {
      str+= decPoint + decimal[1].toString();
   }
   if(this < 0) {
      str = "-" + str;
   }
   return str;
};

Related

1. format(n, x, unit)

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

2. formatNum(n, x, s, c)

   Number.prototype.formatNum = 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 || ','));
   };
   

3. formatNumber()

   Number.prototype.formatNumber = function() {
     var a = Math.abs(this).toString().split('');
     v = '';
     var n = 0;
     while (a.length > 0) {
       if (n>0 && n%3 == 0)
         v = '.' + v;
       v = a.pop() + v;
       n ++;
   ...
   

4. formatNumber(c, d, t)

   Number.prototype.formatNumber = function(c, d, t){
     var n = this,
         c = isNaN(c = Math.abs(c)) ? 2 : c,
         d = d == undefined ? "." : d,
         t = t == undefined ? "," : t,
         s = n < 0 ? "-" : "",
         i = parseInt(n = Math.abs(+n || 0).toFixed(c)) + "",
         j = (j = i.length) > 3 ? j % 3 : 0;
        return s + (j ? i.substr(0, j) + t : "") + i.substr(j).replace(/(\d{3})(?=\d)/g, "$1" + t) + (c ? d + Math.abs(n - i).toFixed(c).slice(2) : "");
   ...
   

5. formatNumber(c, d, t)

   Number.prototype.formatNumber = function(c, d, t) {
       var n = this, c = isNaN(c = Math.abs(c)) ? 2 : c, 
       d = d == undefined ? "," : d, 
       t = t == undefined ? "." : t, 
       s = n < 0 ? "-" : "", 
       i = parseInt(n = Math.abs(+n || 0).toFixed(c)) + "", 
       j = (j = i.length) > 3 ? j % 3 : 0;
       return s + (j ? i.substr(0, j) + t : "") + i.substr(j).replace(/(\d{3})(?=\d)/g, "$1" + t) + (c ? d + Math.abs(n - i).toFixed(c).slice(2) : "");
   

6. formatAmount(c, d, t)

   Number.prototype.formatAmount=function(c, d, t) {
       var n = this, 
       c = isNaN(c = Math.abs(c)) ? 2 : c, 
       d = d == undefined ? "." : d,  
       t = t == undefined ? "," : t,  
       s = n < 0 ? "-" : "", 
       i = parseInt(n = Math.abs(+n || 0).toFixed(c)) + "", 
       j = (j = i.length) > 3 ? j % 3 : 0;
       return s + "?" + (j ? i.substr(0, j) + t : "") + i.substr(j).replace(/(\d{3})(?=\d)/g, "$1" + t) + (c ? d + Math.abs(n - i).toFixed(c).slice(2) : "");
   ...
   

7. formatBytes()

   Number.prototype.formatBytes = function() {
       var units = ['Bytes', 'KBytes', 'MBytes', 'GBytes'],
           bytes = this,
           i;
       for (i = 0; bytes >= 1024 && i < 3; i++) {
           bytes /= 1024;
       return bytes.toFixed(2) + ' ' + units[i];
   };
   ...
   

8. formatComma()

   Number.prototype.formatComma = function() {
     var n = this;
     var thouSeparator = thouSeparator == undefined ? "," : thouSeparator;
     var sign = n < 0 ? "-" : "";
     var i = parseInt(n = Math.abs(+n || 0)) + "";
     var 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); 
   };
   

9. formatCustom(c, d, t)

   Number.prototype.formatCustom = function(c, d, t){
   var n = this, 
       c = isNaN(c = Math.abs(c)) ? 2 : c, 
       d = d == undefined ? "." : d, 
       t = t == undefined ? "," : t, 
       s = n < 0 ? "-" : "", 
       i = String(parseInt(n = Math.abs(Number(n) || 0).toFixed(c))), 
       j = (j = i.length) > 3 ? j % 3 : 0;
      return s + (j ? i.substr(0, j) + t : "") + i.substr(j).replace(/(\d{3})(?=\d)/g, "$1" + t) + (c ? d + Math.abs(n - i).toFixed(c).slice(2) : "");
   ...