vue-element-admin修改页⾯标题修改title
因为在vue-element-admin中标题是⼀个是⼀个动态路由标题，就是说你点进那个页⾯，它会显⽰对应页⾯的标题，所以当我们开发项⽬的时候需要改成我们需要的标题
1.到permission.js页⾯，这个页⾯是做权限判断的，⾥⾯有路由守卫，当我们进⼊这个页⾯的时候，它会获取我们的路由的title值，从⽽修改到浏览器标题中。
其中document.title = a.title)就是设置title
然后到getPageTitle⽅法
import router from './router'
import store from './store'
import { Message } from 'element-ui'
import NProgress from 'nprogress' // progress bar
import 'nprogress/nprogress.css' // progress bar style
import { getToken } from '@/utils/auth' // get token from cookie
import getPageTitle from '@/utils/get-page-title'
const whiteList = ['/login', '/auth-redirect'] // no redirect whitelist
router.beforeEach(async(to, from, next) => {
// start progress bar
NProgress.start()
// set page title
document.title = a.title)
// determine whether the user has logged in
const hasToken = getToken()
if (hasToken) {
if (to.path === '/login') {
// if is logged in, redirect to the home page
next({ path: '/' })
NProgress.done() // hack: github/PanJiaChen/vue-element-admin/pull/2939
} else {
// determine whether the user has obtained his permission roles through getInfo
const hasRoles = les && les.length > 0
if (hasRoles) {
next()
} else {
try {
// get user info
// note: roles must be a object array! such as: ['admin'] or ,['developer','editor']
const { roles } = await store.dispatch('user/getInfo')
// generate accessible routes map based on roles
vue element adminconst accessRoutes = await store.dispatch('permission/generateRoutes', roles)
// dynamically add accessible routes
router.addRoutes(accessRoutes)
// hack method to ensure that addRoutes is complete
// set the replace: true, so the navigation will not leave a history record
next({ ...to, replace: true })
} catch (error) {
// remove token and go to login page to re-login
await store.dispatch('user/resetToken')
<(error || 'Has Error')
next(`/login?redirect=${to.path}`)
NProgress.done()
}
}
}
} else {
/* has no token*/
if (whiteList.indexOf(to.path) !== -1) {

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