对于没有匹配到的路由,咱们通常会匹配到某个固定的页面,如404页面,在vue3中,咱们通常通过pathMatch来设置。如下:

 // 办法一:    {        path: '/:pathMatch(.*)',        component: () => import ('../views/notFound.vue')    },    // 办法二    {        path: '/:pathMatch(.*)*',        component: () => import ('../views/notFound.vue')    },

办法二比办法一前面多了个“*”,他们的区别在于是否解析“/”。
如:当我拜访一个不存在的路由 “http://127.0.0.1:5173/#/homef...”时,

办法一

<template>  <div class=''>404 页面找不到了</div>  <!-- path: '/:pathMatch(.*)' -->  <!-- 输入为: homefdfsd/fesdfsd -->  <h1>{{$route.params.pathMatch}}</h1> </template>

办法二

<template>  <div class=''>404 页面找不到了</div>  <!-- path: '/:pathMatch(.*)*' -->  <!-- 输入为: [ "homefdfsd", "fesdfsd" ] -->  <h1>{{$route.params.pathMatch}}</h1></template>

残缺代码如下

import {    createRouter,    createWebHashHistory} from 'vue-router'const routes = [    {         path: "/",        redirect: '/home'      },{        path: '/home',        component: () => import('../views/home.vue')    },    {        path: '/about',        component: () => import ('../views/about.vue')    },    // 办法一:    {        path: '/:pathMatch(.*)',        component: () => import ('../views/notFound.vue')    },    // 办法二    {        path: '/:pathMatch(.*)*',        component: () => import ('../views/notFound.vue')    },]const router = createRouter({    routes,    history:createWebHashHistory()})export default router