页面路由跳转返回后数据回显，记住原先的状态

src/router/index.js

@@ -304,9 +304,11 @@ Router.prototype.push = function push(location) {
   return routerPush.call(this, location).catch(err => err)
 }
 
-export default new Router({
+const router = new Router({
   base: process.env.VUE_APP_APP_NAME ? process.env.VUE_APP_APP_NAME : "/",
   mode: 'hash', // 去掉url中的#
   scrollBehavior: () => ({ y: 0 }),
   routes: constantRoutes
-})
+});
+
+export default router;