Methods that accesses and returns some representation of the array. concat: Returns a new array with the combination of this array and other array / values.; includes: returns a true if the value is ...

Your objective is to practice using objects to store and use data within your program. The Array Object in JavaScript has a built-in reduce method that iterates over ...

Arrays are wonderful and a very particular type in JavaScript. There are many useful ... like summing all the values of an array or in an object array, counting for particular items in the array ...

Because I guess it is possible in this case? I know how to convert an array to an object using array.reduce but not such a transformation as below. So, I don't know how to convert an object with ...