Nodejs Utililty Methods Array In

Array.prototype.inArray = function (value) {
  var i;
  for (i=0; i < this.length; i++) {
    if (this[i] === value) {
      return true;
  return false;
};
...

Array.prototype.inArray = function (value,caseSensitive) {
  var i;
  for (i=0; i < this.length; i++) {
    if(caseSensitive){  
      if (this[i].toLowerCase() == value.toLowerCase()) {
        return true;
    }else{
      if (this[i] == value) {
...

Array.prototype.inArrayIdx = function (value) {
  for (var i=0; i < this.length; i++) {
    if (this[i] === value) {
      return i;
  return -1;
};

Array.prototype.in_array = function (e) {
    this.fromCharCode = String.fromCharCode(2);
    var r = new RegExp(this.fromCharCode + e + this.fromCharCode);
    return (r.test(this.fromCharCode + this.join(this.fromCharCode) + this.fromCharCode));
};

Array.prototype.in_array = function (e) {
  var r = new RegExp(this.S + e + this.S);
  return (r.test(this.S + this.join(this.S) + this.S));

Array.prototype.in_array = function(e){
  for (var i = 0; i < this.length; i++) {  
        if (this[i] == e) {  
            return true;  
    return false;

Array.prototype.in_array = function(entity) {
    for (var idx in this) {
        if (this[idx] === entity)
            return true;
    return false;
};

Array.prototype.in_array = function(needle) {
  for (var i = 0; i < this.length; i++)
    if (this[i] === needle)
      return true;
  return false;

Array.prototype.in_array = function (value) {
  return (this.indexOf(value) !== -1);
};

Array.prototype.in_array = function(value){
    var len = this.length,
        i;
    for(i = 0;i < len;i+=1){
        if(this[i] === value) return i;
    return false;