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javascriptstring-conversiontransliteration

How to convert text into greek letters


Can anyone tell me how to convert input text into greek letters?

Explanation: I want to convert text which I type in input box into greek letters. Please help me out.

<input type="text" id="my_text">
<p id="output"></>
<button onclick="greek()">Now</button>
<script type="text/javascript">
function greek() {
    var text = document.getElementById("my_text").value;
    ?
    ?
    ?
}

Here I don't know what to do ??


Solution

  • First you need to define how your latin input text shall be transliterated into the greek alphabet. See e. g. https://en.wikipedia.org/wiki/Romanization_of_Greek for possible transliteration tables.

    You would then create a JavaScript map from the chosen table:

    let transliteration = {"a": "α", "b": "β", ... }
    

    To perform the actual transliteration, you will need to write a function

    function transliterate(string) {
      var result = "";
      for (chr of string) {
        result += (transliteration[chr] || "_");
      }
      return result;
    }
    

    For non-transliteratable characters, placeholder "_" will be returned.

    If you chose a transliteration scheme which contains bigrams ("ai") or trigrams ("nch"), you could employ a regex:

    let transliteration = {"a": "α", "ai": "αι", "av": "αυ", "v": "β", "g": "γ", ...};
    let result = string.replace(/ai|av|ng|a|v|g|.../g, chr => transliteration[chr]);