Nodejs Number to Readable Format humanize(rounding, delimiter, separator)

Method Source Code

Number.prototype.humanize = function(rounding, delimiter, separator) {
    rounding = (typeof rounding != 'undefined') ?  rounding : 2;
    delimiter = (typeof delimiter != 'undefined') ? delimiter : ',';
    separator = (typeof separator != 'undefined') ? separator : '.';

    var value = (function(value) {
        if (rounding == 0) return Math.round(value);
        var round_by = Math.pow(10, rounding);
        return (Math.round(value * (round_by)) / round_by);
    })(this);//from w w  w.  ja  va 2 s  .c o  m

    parts = value.toString().split('.');
    parts[0] = parts[0].gsub(/(\d)(?=(\d\d\d)+(?!\d))/, "#{1}" + delimiter);
    return parts.join(separator);
};

Related

1. toEnglish()

   var numbersToWords = {
     0: 'zero',
     1: 'one',
     2: 'two',
     3: 'three',
     4: 'four',
     5: 'five',
     6: 'six',
     7: 'seven',
   ...
   

2. to_kilometers()

   Number.prototype.to_kilometers = function() {
     return this / 1000.0;
   };
   

3. to_kilometers_per_hour()

   Number.prototype.to_kilometers_per_hour = function() {
     return this / 1000.0 * 3600.0;
   };
   

4. to_miles()

   Number.prototype.to_miles = function() {
     return this / 1609.344;
   };
   

5. to_miles_per_hour()

   Number.prototype.to_miles_per_hour = function() {
     return this / 1609.344 * 3600.0;
   };
   

6. toThousands()

   Number.prototype.toThousands = function() {
     return (this / 1000).toFixed(1) + 'K';
   };
   

7. byteFormat()

   Number.prototype.byteFormat = function(){
     var str = ""
     if(this < 1024){
       str = this + "??"
     } else if(this < 1024*2014){
       str = (this/1024).toFixed(1) + "KB"
     } else{
       str = this/(1024*1024).toFixed(1) + "MB"
     return str
   

8. bytesToHuman()

   Number.prototype.bytesToHuman = function () {
     return (this/(1000*1000)).toFixed(2) + 'Mb';
   };
   

9. bytesToSize()

   Number.prototype.bytesToSize = function() {
     var bytes = this;
     var k = 1024;
     var sizes = ['Bytes', 'KB', 'MB', 'GB', 'TB'];
     if (bytes == 0) return '0 Bytes';
     var i = parseInt(Math.floor(Math.log(bytes) / Math.log(k)),10);
     return (bytes / Math.pow(k, i)).toPrecision(3) + ' ' + sizes[i];
   };