Uses an overlay to create a popup.

Click on the map to get a popup. The popup is composed of a few basic elements: a container, a close button, and a place for the content. To anchor the popup to the map, an ol/Overlay is created with the popup container. A listener is registered for the map's click event to display the popup, and another listener is set as the click handler for the close button to hide the popup.

index.html<!DOCTYPE html>
<html lang="en">
    <!-- The line below is only needed for old environments like Internet Explorer and Android 4.x -->
    <script src="https://cdn.polyfill.io/v2/polyfill.min.js?features=requestAnimationFrame,Element.prototype.classList,URL"></script>
      .map {
        width: 100%;
      .ol-popup {
        position: absolute;
        background-color: white;
        -webkit-filter: drop-shadow(0 1px 4px rgba(0,0,0,0.2));
        filter: drop-shadow(0 1px 4px rgba(0,0,0,0.2));
        padding: 15px;
        border-radius: 10px;
        border: 1px solid #cccccc;
        bottom: 12px;
        left: -50px;
        min-width: 280px;
      .ol-popup:after, .ol-popup:before {
        top: 100%;
        border: solid transparent;
        content: " ";
        height: 0;
        width: 0;
        position: absolute;
        pointer-events: none;
      .ol-popup:after {
        border-top-color: white;
        border-width: 10px;
        left: 48px;
        margin-left: -10px;
      .ol-popup:before {
        border-top-color: #cccccc;
        border-width: 11px;
        left: 48px;
        margin-left: -11px;
      .ol-popup-closer {
        text-decoration: none;
        position: absolute;
        top: 2px;
        right: 8px;
      .ol-popup-closer:after {
        content: "✖";
    <div id="map" class="map"></div>
    <div id="popup" class="ol-popup">
      <a href="#" id="popup-closer" class="ol-popup-closer"></a>
      <div id="popup-content"></div>
    <script src="index.js"></script>
index.jsimport 'ol/ol.css';
import Map from 'ol/Map';
import Overlay from 'ol/Overlay';
import View from 'ol/View';
import {toStringHDMS} from 'ol/coordinate';
import TileLayer from 'ol/layer/Tile';
import {toLonLat} from 'ol/proj';
import TileJSON from 'ol/source/TileJSON';

var key = 'Your Mapbox access token from https://mapbox.com/ here';

 * Elements that make up the popup.
var container = document.getElementById('popup');
var content = document.getElementById('popup-content');
var closer = document.getElementById('popup-closer');

 * Create an overlay to anchor the popup to the map.
var overlay = new Overlay({
  element: container,
  autoPan: true,
  autoPanAnimation: {
    duration: 250

 * Add a click handler to hide the popup.
 * @return {boolean} Don't follow the href.
closer.onclick = function() {
  return false;

 * Create the map.
var map = new Map({
  layers: [
    new TileLayer({
      source: new TileJSON({
        url: 'https://api.tiles.mapbox.com/v4/mapbox.natural-earth-hypso-bathy.json?access_token=' + key,
        crossOrigin: 'anonymous'
  overlays: [overlay],
  target: 'map',
  view: new View({
    center: [0, 0],
    zoom: 2

 * Add a click handler to the map to render the popup.
map.on('singleclick', function(evt) {
  var coordinate = evt.coordinate;
  var hdms = toStringHDMS(toLonLat(coordinate));

  content.innerHTML = '<p>You clicked here:</p><code>' + hdms +
  "name": "popup",
  "dependencies": {
    "ol": "6.1.1"
  "devDependencies": {
    "parcel": "1.11.0"
  "scripts": {
    "start": "parcel index.html",
    "build": "parcel build --experimental-scope-hoisting --public-url . index.html"