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Discussion on: Daily Challenge #244 - Search for Letters

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mattymaloney profile image
mattymaloney • • Edited 
const countEm = (str) => {
  str = str.toLowerCase();
  return 'abcdefghijklmnopqrstuvwxyz'.split('').map((letter) => {
    return str.indexOf(letter) === -1 ? '0' : '1';
  }).join('')
};

Thanks for the challenge!

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qm3ster profile image
Mihail Malo •

There's also String.prototype.includes

const letters = "abcdefghijklmnopqrstuvwxyz".split("")
const countEm = str => {
  str = str.toLowerCase()
  return letters.map(letter => str.includes(letter) ? "0" : "1").join("")
}