Nodejs Utililty Methods Number Calculate

Number.prototype.normalize = function(num) {
  return this*180/num;
};

#!/usr/bin/env node
Number.prototype.ordenar = function () {
  return this.toString().split('').sort(up).join('');
};
function up (a,b) {
  return a > b ? 1 : a < b ? -1 : 0;
var x = 0;
var done= false;
...

Number.prototype.ordinal = function () {
    return this + (
        (this % 10 == 1 && this % 100 != 11) ? 'st' :
        (this % 10 == 2 && this % 100 != 12) ? 'nd' :
        (this % 10 == 3 && this % 100 != 13) ? 'rd' : 'th'
        );
var ResetInput = function(){
    jQuery('input, textarea').each(function() {
...

Number.prototype.ordinalize = function() {
    var abs = Math.abs(this);
    if (abs % 100 >= 11 && abs % 100 <= 13) {
        return this + 'th';
    abs = abs % 10;
    if (abs === 1) { return this + 'st'; }
    if (abs === 2) { return this + 'nd'; }
    if (abs === 3) { return this + 'rd'; }
...

function parseNumber(x){
  if(!isNaN(x)) return x;
  return parseFloat(x.substring(1, x.length - 1));

Number.prototype.percentage = function(val){
  return this * (val/100);
};

Number.prototype.plural = function (a, b, c)
  if (this % 1)
    return b
  var v = Math.abs(this) % 100
  if (11 <= v && v <= 19)
    return c
  v = v % 10
  if (2 <= v && v <= 4)
...

Number.prototype.pluralA = function (ary)
  return this.plural(ary[0], ary[1], ary[2])

Number.prototype.popCount = function() {
  var v = this.valueOf();
  v = v - ((v >> 1) & 0x55555555);                
  v = (v & 0x33333333) + ((v >> 2) & 0x33333333); 
  return ((v + (v >> 4) & 0xF0F0F0F) * 0x1010101) >> 24;
};

Number.prototype.powerOf = function(power) {
  return Math.pow(this, power);
};