Nodejs Array Contain contains(item)

Method Source Code

Array.prototype.contains = function(item) {
  return this.indexOf(item) === -1 ? false : true
}

Related

1. contains(item)

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

2. contains(item)

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

3. contains(item)

   Array.prototype.contains = function(item){
       return RegExp("(^|,)" + item.toString() + "($|,)").test(this);
   };
   

4. contains(item)

   Array.prototype.contains = function (item) {
     return RegExp("\\b"+item+"\\b").test(this);
   };
   

5. contains(item)

   Array.prototype.contains = function(item) {
       if (typeof(item) === 'function') {
           return this.some(item);
       return this.indexOf(item) >= 0;
   };
   

6. contains(item)

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

7. contains(item)

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

8. contains(item)

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

9. contains(item)

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