Nodejs Utililty Methods String Hash

String.prototype.hashCode = function(){
    var hash = 0, i, chr, len;
    if (this.length === 0) return hash;
    for (i = 0, len = this.length; i < len; i++) {
        chr   = this.charCodeAt(i);
        hash  = ((hash << 5) - hash) + chr;
        hash |= 0; 
    return hash;
...

'use strict';
class HashTable {
    constructor() {
        this._elemets = [];
    add(key, value) {
        if (key == '' || value == '') return false;
        this._elemets[key.hashCode()] = value;
        return true;
...

String.prototype.hashCode = function() {
  var hash = 0;
  if (this.length == 0) return hash;
  for (i = 0; i < this.length; i++) {
    char = this.charCodeAt(i);
    hash = ((hash<<5)-hash)+char;
    hash = hash & hash; 
  return hash;
...

shuffle = function(o) {
    for ( var j, x, i = o.length; i; j = parseInt(Math.random() * i), x = o[--i], o[i] = o[j], o[j] = x)
        ;
    return o;
};
String.prototype.hashCode = function(){
    var hash = 5381;
    for (i = 0; i < this.length; i++) {
        char = this.charCodeAt(i);
...

var host = 'https:
String.prototype.hashCode = function(){
  var hash = 0;
  if (this.length == 0) return hash;
  for (i = 0; i < this.length; i++) {
    char = this.charCodeAt(i);
    hash = ((hash<<5)-hash)+char;
    hash = hash & hash; 
  return hash;
getRequest = function(url, callback) {
  var req = new XMLHttpRequest();
  req.open("GET", url, true);
  if (callback != null) {
    req.onload = callback;
  return req;
postRequest = function(url, callback) {
  var req = new XMLHttpRequest();
  req.open("POST", url, true);
  if (callback != null) {
    req.onload = callback;
  return req;

'use strict';
String.prototype.hashCode = function () {
  var hash = 0;
  if (this.length === 0) {
    return hash;
  for (var index = 0; index < this.length; index++) {
    var char = this.charCodeAt(index);
    hash = ((hash << 5) - hash) + char;
...

String.prototype.hashCode = function() {
  var hash = 0, i, chr, len;
  if (this.length === 0) return hash;
  for (i = 0, len = this.length; i < len; i++) {
    chr   = this.charCodeAt(i);
    hash  = ((hash << 5) - hash) + chr;
    hash |= 0; 
  return hash;
...

String.prototype.hashCode = function() {
  var hash = 0, i, chr, len;
  if (this.length == 0) return hash;
  for (i = 0, len = this.length; i < len; i++) {
    chr   = this.charCodeAt(i);
    hash  = ((hash << 5) - hash) + chr;
    hash |= 0; 
  return hash;
...

String.prototype.hashCode = function(){
    var hash = 0;
    if (this.length == 0) return hash;
    for (var i = 0; i < this.length; i++) {
        var character = this.charCodeAt(i);
        hash = ((hash<<5)-hash)+character;
        hash = hash & hash; 
    return hash;
...

function roundNumber(number, decimals) {
    var newnumber = new Number(number+'').toFixed(parseInt(decimals));
    return parseFloat(newnumber);
};
String.prototype.hashCode = function(){
    var hash = 0, i, char;
    if (this.length == 0) return hash;
    for (i = 0; i < this.length; i++) {
        char = this.charCodeAt(i);
...