timesize / letter-count

Functions & iterators practice drill.

Letter Frequency Counter

Start coding by opening index.html.

Write a function that counts the number of times each letter occurs in a given string. It should return an object containing the count for each letter.

For example, given the word "apple", letterCount("apple") should return:

{
  "a": 1,
  "p": 2,
  "l": 1,
  "e": 1
}

Bonus: Make sure that lower case letters and upper case letters count for the same character. Also, ignore spaces and punctuation.

Super Bonus: Utilize filter, map and reduce in your solution.

Beyond: Try out this CodeWars challenge.