allStarChallenge.js

/*
All Star Code Challenge #18

Create a function called 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.

strCount('Hello', 'o') // => 1
strCount('Hello', 'l') // => 2
strCount('', 'z')      // => 0
Notes:

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

// Answer//

strCount=(s, l)=> s.split('').filter(x=>x===l).length