OpenLayers 3 Beginner’s Guide

Basic styling

<!doctype html>
<html>
  <head>
    <title>Vector Style Examples</title>
    <link rel="stylesheet" href="../assets/ol3/css/ol.css" type="text/css" />
    <link rel="stylesheet" href="../assets/css/samples.css" type="text/css" />
  </head>
  <body>
    <div id="map" class="map"></div>
    <script src="../assets/ol3/js/ol-debug.js"></script>
    <script>
      // a basic style for the country layer
      var countryStyle = new ol.style.Style({
        fill: new ol.style.Fill({
          color: [203, 194, 185, 1]
        }),
        stroke: new ol.style.Stroke({
          color: [177, 163, 148, 0.5],
          width: 2,
          lineCap: 'round'
        })
      });

      // a style for the timezones, adding some text
      var timezoneStyle = new ol.style.Style({
        stroke: new ol.style.Stroke({
          color: [64, 200, 200, 0.5],
          width: 1
        }),
        text: new ol.style.Text({
          font: '20px Verdana',
          text: 'TZ',
          fill: new ol.style.Fill({
            color: [64, 64, 64, 0.75]
          })
        })
      });

      var countries = new ol.layer.Vector({
        source: new ol.source.GeoJSON({
          projection: 'EPSG:3857',
          url: '../assets/data/countries.geojson'
        }),
        style: countryStyle
      });

      // make sure we don't use the styles in the KML layer
      var timezones = new ol.layer.Vector({
        source: new ol.source.KML({
          projection: 'EPSG:3857',
          url: '../assets/data/timezones.kml',
          extractStyles: false
        }),
        style: timezoneStyle
      });
      var center = ol.proj.transform([0, 0], 'EPSG:4326', 'EPSG:3857');
      var view = new ol.View({
        center: center,
        zoom: 1
      });
      var map = new ol.Map({
        target: 'map',
        layers: [countries, timezones],
        view: view
      });
    </script>
  </body>
</html>