Nodejs Array Contain Key containsKey(key)

Method Source Code

Array.prototype.containsKey = function(key) {
   return typeof this[key] !== 'undefined';
}

Related

1. containsKey(aName)

   Array.prototype.containsKey = function(aName) {
       var i = this.length - 1;
       while(i >= 0) {
           if(this[i].getKey() === aName)
               return true;
           i--;
       return false;
   };
   ...