Nodejs Array Contain contains(element)

Method Source Code

// Check if exists the given element in Array
Array.prototype.contains = function(element) {
    return this.lastIndexOf(element) != -1;
};

Related

1. contains(elem)

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

2. contains(elem)

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

3. contains(elem)

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

4. contains(elem)

   Array.prototype.contains = function(elem) {
     return this.indexOf(elem) >= 0
   

5. contains(element)

   Array.prototype.contains = function(element) {
     return this.indexOf(element) >= 0;  
   };
   

6. contains(element)

   Array.prototype.contains = function(element){
       return $.inArray(element, this);
   };
   

7. contains(element)

   Array.prototype.contains = function (element) {
       return this.indexOf(element) > -1;
   };
   

8. contains(element)

   'use strict';
   Array.prototype.contains = function(element) {
       return this.indexOf(element) > -1;
   };
   

9. contains(element)

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