Spoonerize Me.js

/*
Description:
A spoonerism is a spoken phrase in which the first letters of two of the words are swapped around, often with amusing results.

In its most basic form a spoonerism is a two word phrase in which only the first letters of each word are swapped:

"not picking" --> "pot nicking"

Your task is to create a function that takes a string of two words, separated by a space: words and returns a spoonerism of those words in a string, as in the above example.

NOTE: All input strings will contain only two words. Spoonerisms can be more complex. For example, three-word phrases in which the first letters of the first and last words are swapped: "pack of lies" --> "lack of pies" or more than one letter from a word is swapped: "flat battery --> "bat flattery" You are NOT expected to account for these, or any other nuances involved in spoonerisms.

Once you have completed this kata, a slightly more challenging take on the idea can be found here: http://www.codewars.com/kata/56dbed3a13c2f61ae3000bcd
*/
function spoonerize(words) {
   const arr=words.split(' ')
   return arr[1][0]+arr[0].slice(1)+' '+arr[0][0]+arr[1].slice(1)
}