Nodejs Array Contain contains( needle )

Method Source Code

/**/*from  w w  w. j  av  a  2  s .  c  o  m*/
 * Array.prototype.[method name] allows you to define/overwrite an objects method
 * needle is the item you are searching for
 * this is a special variable that refers to "this" instance of an Array.
 * returns true if needle is in the array, and false otherwise
 */
Array.prototype.contains = function ( needle ) {
   for (i in this) {
       if (this[i] == needle) return true;
   }
   return false;
}

Related

1. contain(arg)

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

2. contain(obj)

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

3. contains( func)

   Array.prototype.contains = function( func) {
     if( $.isFunction(func) ) {
       for( var i=0; i<this.length; i++ ) {
         var item = this[i];
         if( func(item) == true ) {
           return true;
       return false;
   ...
   

4. contains( needle )

   Array.prototype.contains = function ( needle ) {
       for (i in this) {
           if (this[i] == needle) return true;
       return false;
   

5. contains( needle )

   Array.prototype.contains = function ( needle ) {
      for (i in this) {
          if (this[i] === needle) return true;
      return false;
   

6. contains( v )

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

7. contains()

   Array.prototype.contains = function() {
     var args = arguments;
     if (args.length < 1) {
       return false;
     for (var i = 0; i < args.length; i++) {
       var found = false;
       for (var aIndex = 0; aIndex < this.length; aIndex++) {
         if (this[aIndex] === args[i]) {
   ...
   

8. contains(arg)

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