Nodejs Number Format toSize()

Method Source Code

Object.defineProperty( Number.prototype, "toSize", {
    "get": function() {
        return function( bitsNotBytes ) {
            var sizes = ['', ' Kb', ' Mb', ' Gb', ' Tb', ' Pb' ];
            var unit  = 0, remain = Math.abs( this * 1 );
            /*w  ww  . j  a va2  s  .c o m*/
            if ( bitsNotBytes )
                remain *= 8;
            
            while ( remain >= 1024 && unit<5 )
                remain /= 1024, unit++;
            return (this < 0 ? '-' : '' ) + remain.toFixed(2).replace('.00', '' ) + sizes[ unit ];
        }
    }
} );

Related

1. 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) : "");
   ...
   

2. formatDecimal()

   Number.prototype.formatDecimal = function() {
     var nStr = this.toFixed(2);
     x = nStr.split('.');
     x1 = x[0];
     x2 = x.length > 1 ? '.' + x[1] : '';
     var rgx = /(\d+)(\d{3})/;
     while (rgx.test(x1)) {
       x1 = x1.replace(rgx, '$1' + ',' + '$2');
     return x1 + x2;
   };
   

3. formatHuman()

   Number.prototype.formatHuman = function() {
     var numStr   = '' + this;
     var numParts = numStr.split('.');
     var whole    = numParts[0];
     var decimal  = numParts[1] || '';
     var re = /(\d+)(\d{3})/;
     while (re.test(whole)) {
       whole = whole.replace(re, '$1' + ',' + '$2');
     return decimal.length === 0 ? whole : whole + '.' + decimal;
   };
   

4. formatformat(n, x)

   'use strict';
   Number.prototype.format = function format(n, x) {
     const re = `\\d(?=(\\d{${x || 3}})+${(n > 0 ? '\\.' : '$')})`;
     return this.toFixed(Math.max(0, ~~n)).replace(new RegExp(re, 'g'), '$&,');
   };
   String.prototype.rpad = function rpad(padString, length) {
     let str = this;
     while (str.length < length) {
       str = str + padString;
   ...
   

5. formatted()

   Number.prototype.formatted = function(){
     if (!this) return 0;
     var sign   = this < 0 ? '-' : '',
       num    = Math.floor(Math.abs(this)*100+0.50000000001),
       cents  = (num % 100).toString().substring(0, 2);
     num = Math.floor(num/100).toString();
     for (var i = 0, l = Math.floor((num.length-1)/3), p = 3; i < l; i++, p += 4){
       num = num.substring(0, num.length - p) + ' ' + num.substring(num.length - p);
     return sign + num + '.' + (cents < 10 ? '0' + cents : cents);
   };
   

6. CommaFormatted(n,symbol)

   Number.prototype.CommaFormatted = function(n,symbol) {
     return (symbol || '\uffe5') + this.toFixed(n === void 0 ? 2 : n).toString().replace(/(\d)(?=(\d{3})+($|\.))/g, '$1,');
   };
   (4564546).CommaFormatted(2,"$");
   

7. numberFormat()

   String.prototype.numberFormat=function() {
      return this.replace(/(\d)(?=(?:\d{3})+(?!\d))/g,'$1,');
   function numberformatter(vNum){
     return String(vNum).numberFormat();
   

8. numberFormat()

   String.prototype.numberFormat = function() {
       return this.replace(/(\d)(?=(?:\d{3})+(?!\d))/g,'$1,');
   };
   

9. numberWithCommas()

   String.prototype.numberWithCommas = function () {
     if (typeof parseFloat(this) === "number") {
       thiss = (Math.round((this) * 100) / 100).toString();
       var dotLastIndex = this.lastIndexOf(".");
       if (dotLastIndex === -1) {
         thiss = this + ".00"
       } else {
         var decimal = this.substring(dotLastIndex+1);
         var nonDecimal = this.substring(0, dotLastIndex);
   ...