Dispaying a route with WrldRouteView

Using the WrldNavigation widget to find a route and display that route using the WrldRouteView widget.
<!DOCTYPE HTML>
<html>
  <head>
    <script src="https://unpkg.com/wrld.js@1.x.x"></script>
    <link href="https://cdnjs.cloudflare.com/ajax/libs/leaflet/1.0.1/leaflet.css" rel="stylesheet" />
    
    <link href="https://cdn-webgl.wrld3d.com/wrldjs/addons/resources/v1/latest/css/wrld.css" rel="stylesheet"/>
    <script src="https://cdn-webgl.wrld3d.com/wrldjs/addons/navigation/v1/latest/navigation.js"></script>
    <script src="https://cdn-webgl.wrld3d.com/wrldjs/addons/routeview/v1/latest/routeview.js"></script>

  </head>
  
  <body>
  <div style="position: relative">
    <div id="map" style="height: 500px"></div>
    <div style="position: absolute; top: 0; left: 0; display: flex; flex-direction: column; z-index: 20;">
      <button onclick="findRoute()">Find Route</button>
      <button onclick="clearRoute()">Clear Route</button>
    </div>
    <script>
      var apiKey = "your_api_key_here";

      var map = Wrld.map("map", apiKey, {
        center: [56.461762, -2.975963],
        zoom: 16
      });
      
      var navigation = new WrldNavigation(null, map, apiKey);
      
      var routeView = new WrldRouteView(map);

      function clearRoute() {
        routeView.clearDirections();
      }

      function findRoute() {
        var startLocation = WrldNavigation.buildLocation("Westport House", 56.4600344, -2.9783117);
        var endLocation = WrldNavigation.buildLocation("Abertay", 56.463008, -2.974135);
        navigation.findRoute(startLocation, endLocation, findRouteCallback);
      }

      function findRouteCallback(result) {
        if (result.route) {
          navigation.buildDirectionsForRoute(result.route, buildDirectionsCallback);
        }
      }

      function buildDirectionsCallback(result) {
        if (result.directions) {
          routeView.setDirections(result.directions);
        }
      }

    </script>
  </div>
  </body>
</html>