文档解释

router.addRoutes
函数签名：
router.addRoutes(routes: Array<RouteConfig>)
动态添加更多的路由规则。参数必须是一个符合 routes 选项要求的数组。

基本使用:

const routes = [
  {
    path: '/',
    name: 'Home',
    component: Home
  }
]
const router = new VueRouter({
  routes
})
export default router

上面为普通路由配置

使用router.addRoutes改造上面的配置,实现动态添加pageA，如下:

const router = new VueRouter({
  {
    path: '/',
    name: 'Home',
    component: Home
  },})

  let route=[
  {
    path: '/pageA',
    name: 'pageA',
    component: pageA,
  }]

router.addRoutes(route);
export default router

添加之后等效于:

const routes = [
  {
    path: '/',
    name: 'Home',
    component: Home
  },
{
  path: '/pageA',
  name: 'pageA',
  component: pageA,
}
]
const router = new VueRouter({
  routes
})
export default router

这样的好处就可以做路由的权限验证:

设置一个路由数组，设置用户权限commonUser = ['pageA','pageB']]，这样就可以访问pageA，pageB路由了

let route=[
{
  path: '/pageA',
  name: 'pageA',
  component: pageA,
},
{
  path: '/pageB',
  name: 'pageB',
  component: pageB,
},
{
  path: '/pageC',
  name: 'pageC',
  component: pageC,
}
]
let commonUser=['pageA','pageB']
let commonUserRoute=route.filter(function(page){
    return commonUser.includes(page.name)
})
console.log(commonUserRoute);
router.addRoutes(commonUserRoute);
//结果
// (2) [{…}, {…}]
// 0: {path: "/pageA", name: "pageA", component: pageA}
// 1: {path: "/pageB", name: "pageB", component: pageB}
// length: 2
// __proto__: Array(0)