Random alphabetical string with JavaScript

random.js

/**
* @see {@url https://stackoverflow.com/questions/30452263/is-there-a-mechanism-to-loop-x-times-in-es6-ecmascript-6-without-mutable-varia#answer-30452949}
*/
const times = x => f => {
  if (x > 0) {
    f()
    times (x - 1) (f)
  }
}

let hash = ''
times (3) (() => hash += String.fromCharCode(97 + Math.floor(Math.random() * 25)))

console.log(hash) // e. g. fkq