单选组件下拉项可和名称相同

src/components/RadioDrop/index.jsx

@@ -40,7 +40,7 @@ class RadioDrop extends Component{
     if(hideTag){
       return style['no-tag'];
     }
-    if(value&&value!=placeholder){
+    if(value){
       return style['selected-tag'];
     }
     return style['tag'];