All-Star-Code-18.js

/*
This Kata is intended as a small challenge for my students

All Star Code Challenge #18

Create a function that accepts 2 string arguments and returns an integer of the count of occurrences the 2nd argument is found in the first one.

If no occurrences can be found, a count of 0 should be returned.

("Hello", "o")  ==>  1
("Hello", "l")  ==>  2
("", "z")       ==>  0
Notes:

The first argument can be an empty string
The second string argument will always be of length 1
*/

function strCount(str, letter){  
return str.split('').filter((x) => letter === x).length }