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                <link rel="stylesheet" href="" />
<script src=""></script>

<div class="marker-position">Click/hover on polygon</div>
<div id="map"></div>


                body {
  padding: 0;
  margin: 0;
  position: relative;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Oxygen,
    Ubuntu, Cantarell, "Open Sans", "Helvetica Neue", sans-serif;

#map {
  height: 100%;

.marker-position {
  position: absolute;
  bottom: 0;
  left: 0;
  z-index: 999;
  padding: 10px;
  font-weight: 700;
  background-color: #fff;



 * geoJSON extended action

// config map
let config = {
  minZoom: 4,
  maxZomm: 18
// magnification with which the map will start
const zoom = 6;
// co-ordinates
const lat = 51.918904;
const lon = 19.1343786;

// calling map
const map ="map", config).setView([lat, lon], zoom);

// Used to load and display tile layers on the map
// Most tile servers require attribution, which you can set under `Layer`
L.tileLayer("https://{s}{z}/{x}/{y}.png", {
    '&copy; <a href="">OpenStreetMap</a> contributors'

// adding the province name to the visible div
function addTextToDiv(text) {
  const markerPlace = document.querySelector(".marker-position");
  markerPlace.textContent = text;

// showing the name of the province
function getVoivodeshipName(feature, layer) {
  if ( && {

// adding geojson by fetch
// of course you can use jquery, axios etc.
// fetch('./wojewodztwa-medium.geojson')
  .then(function (response) {
    return response.json();
  .then(function (data) {
    var layer = new L.GeoJSON(data, {
      // A Function that will be called once for each
      // created Feature, after it has been created and styled
      onEachFeature: function (feature, layer) {
        layer.on("mouseover", function (e) {
          // bindPopup
          getVoivodeshipName(feature, layer);
          // show voivodeship
          // style
            fillColor: "#eb4034",
            weight: 2,
            color: "#eb4034",
            fillOpacity: 0.7
        layer.on("mouseout", function () {
          // style
            fillColor: "#3388ff",
            weight: 2,
            color: "#3388ff",
            fillOpacity: 0.2
        layer.on("click", function () {
          // adding the province name to the visible div