WFS

Example of using WFS with a BBOX strategy.

This example loads new features from GeoServer WFS when the view extent changes.

<!DOCTYPE html>
<html>
  <head>
    <title>WFS</title>
    <link rel="stylesheet" href="https://openlayers.org/en/v5.3.0/css/ol.css" type="text/css">
    <!-- 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>

  </head>
  <body>
    <div id="map" class="map"></div>
    <script>
      import Map from 'ol/Map.js';
      import View from 'ol/View.js';
      import GeoJSON from 'ol/format/GeoJSON.js';
      import {Tile as TileLayer, Vector as VectorLayer} from 'ol/layer.js';
      import {bbox as bboxStrategy} from 'ol/loadingstrategy.js';
      import BingMaps from 'ol/source/BingMaps.js';
      import VectorSource from 'ol/source/Vector.js';
      import {Stroke, Style} from 'ol/style.js';


      var vectorSource = new VectorSource({
        format: new GeoJSON(),
        url: function(extent) {
          return 'https://ahocevar.com/geoserver/wfs?service=WFS&' +
              'version=1.1.0&request=GetFeature&typename=osm:water_areas&' +
              'outputFormat=application/json&srsname=EPSG:3857&' +
              'bbox=' + extent.join(',') + ',EPSG:3857';
        },
        strategy: bboxStrategy
      });


      var vector = new VectorLayer({
        source: vectorSource,
        style: new Style({
          stroke: new Stroke({
            color: 'rgba(0, 0, 255, 1.0)',
            width: 2
          })
        })
      });

      var raster = new TileLayer({
        source: new BingMaps({
          imagerySet: 'Aerial',
          key: 'Your Bing Maps Key from http://www.bingmapsportal.com/ here'
        })
      });

      var map = new Map({
        layers: [raster, vector],
        target: document.getElementById('map'),
        view: new View({
          center: [-8908887.277395891, 5381918.072437216],
          maxZoom: 19,
          zoom: 12
        })
      });
    </script>
  </body>
</html>