Switch2OSM

Take back control of your maps

Getting started with Leaflet


Introduction

Leaflet is a lightweight JavaScript library for embedding maps. It uses a permissive BSD open-source license so can be incorporated into any site without legal worries. Its source code is available on GitHub.

Here, we restrict ourselves to a small, self-contained example and refer to the official tutorials and documentation for elaborate usages.

Getting started

Copy the following content to a file leaflet.html and open it in your browser:

<!DOCTYPE HTML>
<html lang="en">
  <head>
    <meta charset="utf-8" />
    <meta name="viewport" content="width=device-width, initial-scale=1.0, maximum-scale=1.0, user-scalable=no">
    <script src="http://cdn.leafletjs.com/leaflet/v0.7.7/leaflet.js"></script>
    <link rel="stylesheet" href="http://cdn.leafletjs.com/leaflet/v0.7.7/leaflet.css" />
    <style>
      html, body {
        height: 100%;
        padding: 0;
        margin: 0;
      }
      #map {
        /* configure the size of the map */
        width: 100%;
        height: 100%;
      }
    </style>
  </head>
  <body>
    <div id="map"></div>
    <script>
      // initialize Leaflet
      var map = L.map('map').setView({lon: 0, lat: 0}, 2);

      // add the OpenStreetMap tiles
      L.tileLayer('https://{s}.tile.openstreetmap.org/{z}/{x}/{y}.png', {
        maxZoom: 19,
        attribution: '&copy; <a href="https://openstreetmap.org/copyright">OpenStreetMap contributors</a>'
      }).addTo(map);

      // show the scale bar on the lower left corner
      L.control.scale().addTo(map);

      // show a marker on the map
      L.marker({lon: 0, lat: 0}).bindPopup('The center of the world').addTo(map);
    </script>
  </body>
</html>

Further links

You want to …

  • use a different background? → Leaflet natively supports TMS and WMS. See there which options are supported in Leaflet.
  • add all of your company’s locations? → Provide them as GeoJSON and include them in the map.
  • use a different map projection? → Use the Proj4Leaflet plugin.