JSFiddle - React, Tailwind, and code Playground

HTML

<label for="kraj">Kraj:</label>
<input type="text" id="kraj" name="kraj">
<br>
<label for="ulica">Ulica:</label>
<input type="text" id="ulica" name="ulica">
<br>
<label for="hisnaStevilka">Hišna št.:</label>
<input type="text" id="hisnaStevilka" name="hisnaStevilka">
<br>
<a href="" target="_blank" id="clickly">Poglej na HERE maps</a>

JavaScript

document.getElementById('clickly').onclick = function () {
    console.log('bambi');
    var _naslov = document.getElementById('ulica').value + ' ' + document.getElementById('hisnaStevilka').value + ', ' + document.getElementById('kraj').value;

    var _link = 'http://here.com/?plcsDl=search&q=' + encodeURIComponent(_naslov);

    document.getElementById('clickly').setAttribute('href', _link);
};