fix buttons

CHANGELOG.md

@@ -1,6 +1,6 @@
 ### Change Log for Node-RED Worldmap
 
- - v2.28.2 - Let button declaration be an array
+ - v2.28.3 - Let button declaration be an array
  - v2.28.1 - Fix layer command bug for non-core layers. Issue #195
  - v2.28.0 - Better Handling of sidc icons in geojson
  - v2.27.3 - Try to handle greatcircles crossing antimeridian

README.md

@@ -11,7 +11,7 @@ map web page for plotting "things" on.
 
 ### Updates
 
-- v2.28.2 - Let button declaration be an array
+- v2.28.3 - Let button declaration be an array
 - v2.28.1 - Fix layer command bug for non-core layers. Issue #195
 - v2.28.0 - Better Handling of sidc icons in geojson
 - v2.27.3 - Try to handle greatcircles crossing antimeridian

package.json

@@ -1,6 +1,6 @@
 {
     "name": "node-red-contrib-web-worldmap",
-    "version": "2.28.2",
+    "version": "2.28.3",
     "description": "A Node-RED node to provide a web page of a world map for plotting things on.",
     "dependencies": {
         "@turf/bezier-spline": "~6.5.0",

worldmap/worldmap.js

@@ -2166,7 +2166,7 @@ function doCommand(cmd) {
         }
     }
     if (cmd.hasOwnProperty("button")) {
-        if (!isArray(cmd.button)) { cmd.button = [cmd.button]; }
+        if (!Array.isArray(cmd.button)) { cmd.button = [cmd.button]; }
         cmd.button.forEach(function(b) {
             if (b.icon) {
                 if (!buttons[b.name]) {