The reduce method accepts two arguments: a reducer function for the array that is used as a callback, and an optional initialValue argument. The reducer function takes four arguments: accumulator ...

Arrays are wonderful and a very particular type in JavaScript. There are many useful built-in properties and methods that will help you resolve any task which involves this kind of type. Today, we ...

A second no-frills method allows you to display numbers as currency so they display a specific number of digits. In this case, however, the method looks at the entire number rather than just its ...