fix 一些问题

web-react/src/store/reducer/nav.js

@@ -1,9 +1,13 @@
-const nav = (state = { nav: [] }, action) => {
+const defaultState = { nav: [] }
+
+const nav = (state = defaultState, action) => {
     // 写入各种action对应的操作
     switch (action.type) {
-        case 'SET_ANV':
+        case 'SET_NAV':
             const _state = { ...state, nav: action.nav }
             return _state
+        case 'RESET_NAV':
+            return defaultState
         default:
             return state
     }