examples/button/base: throws a JS error #6660

Author: tobiu

examples/button/base/MainContainer.mjs

@@ -147,7 +147,7 @@ class MainContainer extends ConfigurationViewport {
             module        : ComboBox,
             forceSelection: true,
             labelText     : 'ui',
-            listeners     : {change: me.onConfigChange.bind(me, 'ui')},
+            listeners     : {change: me.onConfigRecordChange.bind(me, 'ui')},
             style         : {marginTop: '10px'},
             value         : me.exampleComponent.ui,
 
@@ -241,6 +241,14 @@ class MainContainer extends ConfigurationViewport {
             }]*/
         })
     }
+
+    /**
+     * @param {String} config
+     * @param {Object} opts
+     */
+    onConfigRecordChange(config, opts) {
+        this.exampleComponent[config] = opts.value['id']
+    }
 }
 
 export default Neo.setupClass(MainContainer);

src/component/Base.mjs

@@ -1029,7 +1029,9 @@ class Component extends Base {
         let me  = this,
             cls = me.cls;
 
-        NeoArray.remove(cls, `neo-${me.ntype}-${oldValue}`);
+        if (oldValue) {
+            NeoArray.remove(cls, `neo-${me.ntype}-${oldValue}`)
+        }
 
         if (value && value !== '') {
             NeoArray.add(cls, `neo-${me.ntype}-${value}`)