Checks if two letters are anagrams.

anagramChecker.js

function isAnagram(stringA, stringB) {

  function createCharMap(text) {
    let charMap = {}

    for (let char of text) {
      if (charMap.hasOwnProperty(char)) {
        charMap[char]++
      } else {
        charMap[char] = 1
      }
    }

    return charMap
  }

  if (stringA.length === stringB.length) {
    let stringAMap = createCharMap(stringA)
    let stringBMap = createCharMap(stringB)
    for (let char in stringAMap) {
      if (stringAMap[char] !== stringBMap[char]) {
        return false
      }
    }
    return true
  } else {
    return false
  }
}