Leaflet.ActiveLayers/example.html at master · vogdb/Leaflet.ActiveLayers · GitHub

1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
<!DOCTYPE html>
<html>
<head>
  <meta charset="utf-8">
  <title>Example</title>
  <link rel="stylesheet" href="node_modules/leaflet/dist/leaflet.css"/>
  <script src="node_modules/leaflet/dist/leaflet.js"></script>

  <script src="src/ActiveLayers.js"></script>
  <script src="test/TestLayers.js"></script>

  <style>
    #map {
      width: 640px;
      height: 480px;
    }
  </style>

</head>
<body>
<div id="map"></div>
<button id="showActiveOverlayLayers">Console Active Overlay layers</button>

</body>

<script>
  (function () {

    var map = L.map('map', {
      center:new L.LatLng(39.73, -104.99),
      zoom:10,
      layers:testLayers.map
    })

    map.on('overlayadd', function () {
        console.log(Object.keys(control.getActiveOverlayLayers()).length);
    });

    var control = L.control.activeLayers(testLayers.base, testLayers.overlay)

    control.addTo(map)

    document.getElementById('showActiveOverlayLayers').onclick = function () {
      var currentActiveLayers = control.getActiveOverlayLayers()
      var currentLayerList = [];
      for (var layer in currentActiveLayers) {
        if (currentActiveLayers.hasOwnProperty(layer)) {
          currentLayerList.push(currentActiveLayers[layer])
        }
      }
      console.log(currentLayerList)
    }
  })()
</script>
</html>