Stuff

main.go

@@ -8,7 +8,7 @@ import (
 	"net/http"
 )
 
-var lastData interface{}
+var lastData map[string]interface{}
 
 //go:embed notfall.tmpl
 var templateContent []byte
@@ -38,5 +38,20 @@ func main()  {
 		})
 	})
 
+	http.HandleFunc("/json", func(writer http.ResponseWriter, request *http.Request) {
+		var data map[string]interface{}
+
+		data["lat"] = lastData["lat"]
+		data["lon"] = lastData["lon"]
+		data["tst"] = lastData["tst"]
+
+		r, err := json.Marshal(data)
+		if err != nil {
+			panic(err)
+		}
+
+		writer.Write(r)
+	})
+
 	http.ListenAndServe(":8080", nil)
 }

notfall.tmpl

@@ -19,5 +19,12 @@
     L.tileLayer('https://{s}.tile.openstreetmap.org/{z}/{x}/{y}.png', {
         attribution: '&copy; <a href="https://www.openstreetmap.org/copyright">OpenStreetMap</a> contributors'
     }).addTo(map);
+
+    function update() {
+        fetch('/json')
+            .then(response => response.json())
+            .then(data => console.log(data));
+    }
+    update()
 </script>
 </body>