import Vue from 'vue’
import Router from ‘vue-router’
//import Home from ‘…/pages/home/Home.vue’
//import City from ‘…/pages/city/City’
//import Detail from ‘…/pages/detail/Detail’
//Vue.use(Router)

Vue.use(Router)

export default new Router({

routes: [
{
path: ‘/’,
name: ‘Home’,
component: () => import(’…/pages/home/Home.vue’)
},
{
path: ‘/city’,
name: ‘City’,
component: () => import(’…/pages/city/City’)
},
{
path: ‘/Detail/:id’,
name: ‘Detail’,
component: () => import(’…/pages/detail/Detail’)
},
],

scrollBehavior (to ,from , savedPostition) {
return { x: 0 , y:0}
}
});

我复制了你线上的代码 还是会报 “Uncaught TypeError: Cannot read property ‘use’ of undefined” 的错