主路由
AppRouter.js

import IndexRouter from './index/IndexRouter.js';
import RegisterRouter from './Register/RegisterRouter.js';

const router = new VueRouter({
routes: [{
path: '/',
component: IndexPage,
redirect: '/index',
children: [
IndexRouter,
RegisterRouter,
]
}]
});
export default router;

子路由
export default {
path: '/register',
component: register,
name: 'register',
meta: {
backRouter: 'index'
}
};