Nodejs Utililty Methods String Trim

String.prototype.trim = function() {
    return this.replace(/^\s*/, "").replace(/\s*$/, "");
};

console.log("'" + " a ".trim() + "'");
String.prototype.trim = function(){
  return this.replace(/^\s+|\s+$/g, '');
};    
console.log("'" + " b ".trim() + "'");

String.prototype.trim = function()
  var x=this;
  x=x.replace(/^\s*(.*)/, "$1");
  x=x.replace(/(.*?)\s*$/, "$1");
  return x;

var Firefox = (document.getElementById && !document.all);
var MSIE = (-1 != navigator.userAgent.indexOf('MSIE'));
String.prototype.trim=function(){
  return this.replace(/^\s+|\s+$/g,"");
};
function Redirect(url)
  parent.location=url;
var Submitted = 0;
function OnSubmit(form)
  if (Submitted) {
    return false;
  Submitted = 1;
  return true;

String.prototype.trim = function(){ 
  return this.rTrim(this.lTrim());

String.prototype.trim = String.prototype.trim || function () {
  const
    str = this.replace(/^\s\s*/, '');
  let
    i = str.length;
  for (let rgxp = /\s/; rgxp.test(str.charAt(--i));) {
  return str.substring(0, i + 1);
};
...

'use strict';
Array.isArray = Array.isArray || function (obj) {
  return {}.call(obj) === '[object Array]';
};
String.prototype.trim = String.prototype.trim || function () {
  const
    str = this.replace(/^\s\s*/, '');
  let
    i = str.length;
...

String.prototype.trim=function(){
      return this.replace(/(^\s*)|(\s*$)/g, "");
String.prototype.ltrim=function(){
      return this.replace(/(^\s*)/g,"");
   String.prototype.rtrim=function(){
      return this.replace(/(\s*$)/g,"");
   function trim(str){ 
       return str.replace(/(^\s*)|(\s*$)/g, "");
   function ltrim(str){
       return str.replace(/(^\s*)/g,"");
   function rtrim(str){
       return str.replace(/(\s*$)/g,"");

var person = {};
person.say = function(name){
    console.log(name);
};
person.say("lilei");
String.prototype.trim = function(){
    return this.replace(/(^\s*)|(\s*$)/g, "");
function  trim(str){
...

function $(e){
  return document.getElementById(e);
String.prototype.trim = function(){
  return this.replace(/(^\s+)|(\s+$)/g,"");
function checkFormField(fieldObj,msgObj,re,nullMsg,errorMsg){
  msgObj.innerHTML = "";
  var v = fieldObj.value.replace(/(^\s+)|(\s+$)/g,"");
...