vue路由跳转如何改变title的值

在index.js页面中设置路由跳转中加上meta，然后利用vue的beforeEach遍历设置每个页面的title
亲测有效

const router=new Router({
  routes: [
    {
      path: '/',
      name: 'goods',
      component: goods,
      meta: {
 title: '首页入口'
      }
    },{
 path:'/ratings',
 name:'ratings',
 component:ratings,
 meta: {
 title: '评论'
      }
    },{
 path:'/seller',
 name:'seller',
 component:seller,
 meta: {
 title: '售卖'
      }
    }
  ]
})

router.beforeEach((to,form,next) =>{
    
    if(to.meta.title){
 document.title=to.meta.title
    }
    next();
})
export default router