**Array reduce() Method**

The array reduce() method in JavaScript is used to reduce
the array to a single value and executes a provided function
for each value of the array (from left-to-right) and the return
value of the function is stored in an accumulator.

```js
    var  pokemon  = ["Squirtle", "Charmander", "Bulbasaur"];
    
    var  pokeLength  = pokemon.reduce(function(previous, current) {
        return  previous  +  current.length;
    }, 0);
```
**Output**

27