Edit

Bing Maps

bing2 bing-maps1

Example of a Bing Maps layer.

When the Bing Maps tile service doesn't have tiles for a given resolution and region it returns "placeholder" tiles indicating that. Zoom the map beyond level 19 to see the "placeholder" tiles. If you want OpenLayers to display stretched tiles in place of "placeholder" tiles beyond zoom level 19 then set maxZoom to 19 in the options passed to ol/source/BingMaps.

main.js
import 'ol/ol.css';
import BingMaps from 'ol/source/BingMaps';
import Map from 'ol/Map';
import TileLayer from 'ol/layer/Tile';
import View from 'ol/View';

const styles = [
  'RoadOnDemand',
  'Aerial',
  'AerialWithLabelsOnDemand',
  'CanvasDark',
  'OrdnanceSurvey',
];
const layers = [];
let i, ii;
for (i = 0, ii = styles.length; i < ii; ++i) {
  layers.push(
    new TileLayer({
      visible: false,
      preload: Infinity,
      source: new BingMaps({
        key: 'Your Bing Maps Key from https://www.bingmapsportal.com/ here',
        imagerySet: styles[i],
        // use maxZoom 19 to see stretched tiles instead of the BingMaps
        // "no photos at this zoom level" tiles
        // maxZoom: 19
      }),
    })
  );
}
const map = new Map({
  layers: layers,
  target: 'map',
  view: new View({
    center: [-6655.5402445057125, 6709968.258934638],
    zoom: 13,
  }),
});

const select = document.getElementById('layer-select');
function onChange() {
  const style = select.value;
  for (let i = 0, ii = layers.length; i < ii; ++i) {
    layers[i].setVisible(styles[i] === style);
  }
}
select.addEventListener('change', onChange);
onChange();
index.html
<!DOCTYPE html>
<html lang="en">
  <head>
    <meta charset="UTF-8">
    <title>Bing Maps</title>
    <!-- Pointer events polyfill for old browsers, see https://caniuse.com/#feat=pointer -->
    <script src="https://unpkg.com/elm-pep"></script>
    <!-- The line below is only needed for old environments like Internet Explorer and Android 4.x -->
    <script src="https://cdn.polyfill.io/v3/polyfill.min.js?features=fetch,requestAnimationFrame,Element.prototype.classList,URL,TextDecoder,Number.isInteger"></script>
    <style>
      .map {
        width: 100%;
        height:400px;
      }
    </style>
  </head>
  <body>
     <div id="map" class="map"></div>
     <select id="layer-select">
       <option value="Aerial">Aerial</option>
       <option value="AerialWithLabelsOnDemand" selected>Aerial with labels</option>
       <option value="RoadOnDemand">Road</option>
       <option value="CanvasDark">Road dark</option>
       <option value="OrdnanceSurvey">Ordnance Survey</option>
     </select>
    <script src="main.js"></script>
  </body>
</html>
package.json
{
  "name": "bing-maps",
  "dependencies": {
    "ol": "6.9.0"
  },
  "devDependencies": {
    "parcel": "^2.0.0-beta.1"
  },
  "scripts": {
    "start": "parcel index.html",
    "build": "parcel build --public-url . index.html"
  }
}