Greek to Greeklish Javascript Function by Nicolas Lagios

//Greek to Greeklish Javascript Function by Nicolas Lagios - Rocket Path P.C.
function replaceGreekCharacters(txt) {
    const greekToLatinMap = {
      //μικρά ελληνικά
      "α": "a","β": "b",
      "γ": "g","δ": "d",
      "ε": "e","ζ": "z",
      "η": "h","θ": "th",
      "ι": "i","κ": "k",
      "λ": "l","μ": "m",
      "ν": "n","ξ": "x",
      "ο": "o","π": "p",
      "ρ": "r","σ": "s",
      "τ": "t","υ": "y",
      "φ": "ph","χ": "ch",
      "ψ": "ps","ω": "w",

      //μικρά με τόνους
      "ά": "a","έ": "e",
      "ή": "h","ί": "i",
      "ό": "o","ύ": "y",
      "ώ": "w",

      //κεφαλαία ελληνικά
      "Α": "A","Β": "B",
      "Γ": "G","Δ": "D",
      "Ε": "E","Ζ": "Z",
      "Η": "H","Ρ": "TH",
      "Ι": "I","Κ": "K",
      "Λ": "L","Μ": "M",
      "Ν": "N","Ξ": "X",
      "Ο": "O","Π": "P",
      "Ρ": "R","Σ": "S",
      "Τ": "T","Υ": "Y",
      "Φ": "PH","Χ": "CH",
      "Ψ": "PS","Ω": "W",

      //κεφαλαία με τόνους
      "Ά": "A","Έ": "E",
      "Ή": "H","Ί": "I",
      "Ό": "O","Ύ": "Y",
      "Ώ": "W",
    };
    for (const greekCharacter in greekToLatinMap) {
        txt = txt.replace(greekCharacter, greekToLatinMap[greekCharacter]);
    }
    return txt;
  }