Nodejs Number to Readable Format bytesToSize()

Method Source Code

Number.prototype.bytesToSize = function() {
  var bytes = this;
  var k = 1024;//w ww .ja v a  2  s  .co m
  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];
};

Related

1. to_miles_per_hour()

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

2. humanize(rounding, delimiter, separator)

   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);
   ...
   

3. toThousands()

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

4. 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
   

5. bytesToHuman()

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