How to check if 2 strings are anagrams in JavaScript?

etqai3t.js

function isAnagram (a, b) {
    var y = a.split("").sort().join(""),
        z = b.split("").sort().join("");
    return (z === y)
}

console.log(isAnagram("marek", "kemra")) // --> true
console.log(isAnagram("sautter", "sautrra")) // --> false

// https://stackoverflow.com/questions/23785465/javascript-anagram-comparison