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 ...

The Array Object in JavaScript has a built-in reduce method that iterates over each value in an array and returns a value. It is very useful when calculating sums. Write a function that takes an array ...

Built-in JavaScript objects and functions are ones you'll use all the time. Here's how to use Object, JSON, String, Math, Date, and console in your JavaScript programs.

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 ...

Arrays in JSON are surrounded by square brackets, like these [ ]. Each value in the array is separated by a comma. Users can access array values and update, delete or loop them. An array can be stored ...