index.js

import Vue from 'vue'
import Router from 'vue-router'
import HelloWorld from '@/components/HelloWorld'

Vue.use(Router)

export default new Router({
  routes: [{
      path: '/',
      name: 'HelloWorld',
      component: HelloWorld
    },
  ],
  // mode: 'hash', //hash模式下,浏览器地址不规整,带有#
  mode: 'history', //history模式下,浏览器地址规整,但需要后台支持
})