Take an ascii string and output possible unicode string equivalent in NFKD so that it is understood by IDNA within URLs

unicode_from_ascii.js

function conv_to_uni(st) {
    udata = 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    for (pos in st) {
        cUp = st[pos].toUpperCase().charCodeAt(0);
        cLo = st[pos].toLowerCase().charCodeAt(0);
        for (pos_uni in udata[cUp]) {
            console.log(String.fromCodePoint(udata[cUp][pos_uni]));
        }
        for (pos_uni in udata[cLo]) {
            console.log(String.fromCodePoint(udata[cLo][pos_uni]));
        }
    }
}