Nodejs Array Contain contains(k)

Method Source Code

/**//from  www . j  a va 2 s.com
 * Extend Array prototype with method to detect excistence of value in array
 * @param k
 * @returns {boolean}
 */
Array.prototype.contains = function (k) {
    'use strict';

    var p;

    for (p in this) {
        if (this.hasOwnProperty(p) && this[p] === k) {
            return true;
        }
    }

    return false;
};

Related

1. contains(item)

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

2. contains(item)

   Array.prototype.contains = function(item)
     return this.indexOf(item) != -1;
   };
   

3. contains(item)

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

4. contains(item, from)

   Array.prototype.contains = function (item, from) {
       return this.indexOf(item, from) !== -1;
   };
   

5. contains(item, from)

   Array.prototype.contains = function(item, from){
     return this.indexOf(item, from) != -1;
   

6. contains(k)

   function my_max(arr){
       var max = arr[0];
       for (var i = 0; i < arr.length; i++){
           if (arr[i] > max){
               max = arr[i];
       return max;
   };
   ...
   

7. contains(key, array)

   Array.prototype.contains = function(key, array){
     var toReturn = false
     $.each(this, function(i, object){
       if(array.indexOf(object[key]) > -1){
         toReturn = true
         return false
     })
     return toReturn
   ...
   

8. contains(key, value)

   Array.prototype.contains = function(key, value) {
       var i = this.length;
       while (i--) {
           if (this[i][key] === value){
               return true;
       return false;
   

9. contains(mxd,strict)

   Array.prototype.contains = function(mxd,strict) {
       for(i in this) {
       if(this[i] == mxd && !strict) return true;
         else if(this[i] === mxd) return true;
       return false;