Nodejs Utililty Methods String to Hex Convert

String.prototype.hex = function() {
  return bigInt(this.substr(0)).toHex()

String.prototype.hex10 = function() {
  var x= (/^\#/.test(this))? this.substring(1): this;
  return parseInt(x,16);

String.prototype.hex2Dec = function() {
  return parseInt(this,16);
};

String.prototype.toHex = function () {
    var self = this,
        hex, regex = /\(([^)]+)\)/,
        rgb = regex.exec(self)[1].split(','),
        red = parseInt(rgb[0]), 
        green = parseInt(rgb[1]), 
        blue = parseInt(rgb[2]); 
    function toHEX(r, g, b) {
        r = r.toString(16).length ==1 ? r.toString(16)+r.toString(16):r.toString(16);
...

String.prototype.toHex = function() {
  for (var i = 1, j = this.length, $ = this.charCodeAt(0).toString(16); i<j; i++) $ += ' ' + this.charCodeAt(i).toString(16);
  return $;
};

Util.toHex = function(v1) {
  var res = (new Number(v1).toString(16));
  if (res.length == 1) {
    res = "0" + res;
  return res;

Number.prototype.toHexString = function() {
  if (this === null) { return null; }
  if (isNaN(this)) { return this; }
  var num;
  var hex;
  if (this < 0) {
    num = 0xFFFFFFFF + this + 1;
  else {
...

String.prototype.toHexString = function()
  var res = [];
  for(var i=0, j=this.length; i < j; ++i)
    var chr = this.charCodeAt(i).toString(16);
    chr = ((chr.length == 1)?'0':'') + chr;
    res.push(chr);
  return res.join(' ').toUpperCase();