Element 导航栏禁止折叠

     <el-menu
        ref="menu"
        :show-timeout="200"
        :collapse="isCollapse"
        :unique-opened="$store.state.settings.uniqueOpened"
        active-text-color="#4979FF"
        :default-active="onRoutes"
        @close="closeMenu"
        @open="chooseMenu"
      >
    </el-menu>

    closeMenu(){
         this.$refs.menu.open(indexPath);
    }