将组件名称传递到Vue应用程序中的标题字段

import Vue from 'vue'
import VueRouter from 'vue-router'

Vue.use(VueRouter)

const routes = [
  {
    path: '/',
    name: 'Home',
    component: Home,
    meta: { title: '首页' }
  },
  {
    path: '/about',
    name: 'About',
    component: About,
    meta: { title: '关于我们' }
  },
  // 其他路由配置...
]

const router = new VueRouter({
  mode: 'history',
  base: process.env.BASE_URL,
  routes
})

export default router

import Vue from 'vue'
import App from './App.vue'
import router from './router'

Vue.config.productionTip = false

router.beforeEach((to, from, next) => {
  const pageTitle = to.meta.title || '默认标题' // 如果路由meta中没有定义title，则使用默认标题
  document.title = pageTitle
  next()
})

new Vue({
  router,
  render: h => h(App)
}).$mount('#app')