spa-index.js

import Vue from 'vue'
import Router from 'vue-router'
import User from "@/components/User"
import Home from "@/components/Home";

Vue.use(Router)

export default new Router({
  routes: [
    {
      path: '/',
      name: 'Home',
      component: Home
    },
    {
      path: "/user/:id",
      name: "User",
      component: User
    }
  ]
})