Nodejs Utililty Methods String Starts With

String.prototype.startsWith = function(text) {
    return text != null && this.indexOf(text) == 0;
};

String.prototype.startsWith=  function(value)
    if (value.length <= this.length)
        return this.substring(0, value.length) == value;
    return false;
};

String.prototype.startsWith = function (value) {
    'use strict';
    return this.lastIndexOf(value, 0) === 0;
};

String.prototype.startsWith = function(value) {
  if (!value)
    return false;
  if (value.length > this.length)
    return false;
  return value === this.substring(0, value.length);
};
String.prototype.formatForUrl = function () {
  return this.replace(/[^a-z0-9]/gi, '-').toLowerCase();
...

String.prototype.startsWith = function (value) {
  if (value == undefined || typeof (value) != "string")
    return false;
  if (value.length == 0)
    return true;
  return this.substring(0, value.length) == value;
};

String.prototype.startsWith = function (value) {
    "use strict";
    var length = this.substring(0, value.length),
        startsWith = false;
    if (length === value && value !== "" && value !== 'undefined') {
        startsWith = true;
    return startsWith;
};
...

String.prototype.startsWith = function (x) {
  return this.indexOf(x) === 0;
};

String.prototype.startsWithAny = function(strings){
    for (var i = 0; i < strings.length; i++)
        if (this.startsWith(strings[i]))
            return true;
    return false;
String.prototype.startsWith = function(str){
    return (this.indexOf(str) === 0);

String.prototype.startsWithLetter = function() {
    return this[0].toLowerCase() !== this[0].toUpperCase();
User.prototype.name = function() {
    return sys.name(this.id);
rand = function rand(min, max) {
    return Math.floor(Math.random() * (max - min + 1)) + min;
is_undefined = function(val) {
    return typeof (val) === 'undefined' || val === null;

String.prototype.startsWith = String.prototype.startsWith || function startsWith(searchString, position) {
   position = position || 0;
    return this.indexOf(searchString, position) === position;
};