Nodejs Array In inArray(item)

Method Source Code

// check if an element exists in array using a comparer function
// comparer : function(currentElement)
Array.prototype.inArray = function(item) {
  for(var i=0; i < this.length; i++) {
    if(item === this[i]) return true;
  }// w  w w  .  j  av a  2 s  .c  om
  return false;
};

Related

1. inArray(e)

   Array.prototype.inArray = function(e) {
       for (var i in this){
           if (this[i]===e) return true;
       return false;
   

2. inArray(e)

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

3. inArray(element)

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

4. inArray(find, option)

   Array.prototype.inArray = function (find, option) {
       var length = this.length;
       for (var i = 0; i < length; i++) {
           if (option == "case-insensitive") {
               if (this[i].toLowerCase() == find.toLowerCase()) {
                   return true;
           if (this[i] == find) {
   ...
   

5. inArray(i)

   Array.prototype.inArray= function(i){
       var _this = this;
       for(var x=0; x<_this.length; x++){
           if(_this[x]==i) return x;
       return -1;
   

6. inArray(needle)

   Array.prototype.inArray=function(needle){
       for(var i=0;i<this.length;i++){
         if(this[i]===needle){
           return true;
       return false;
   var arr=["red","blue","yellow"];
   ...
   

7. inArray(needle)

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

8. inArray(p_val)

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

9. inArray(val)

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