Vue3 实现登录跳转页面和内部跳转页面(加载组件)

点击登录按钮即跳转到新页面，而不是在当前页面加载组件

App.Vue:

<script>
export default {
  data(){
    return{}
  }
}
</script>
<template>
// 必须加上router-view，否则会显示空白页面
  <router-view></router-view>
</template>
<style>
</style>

main.js:

import './assets/main.css'
import App from './App.vue'
import { createApp } from 'vue'
import router from './router'
import ElementUI from 'element-plus'
import 'element-plus/theme-chalk/index.css'


const app = createApp(App)

app.use(router)
app.use(ElementUI)
app.mount('#app')

index.js:

import { createRouter, createWebHistory } from 'vue-router'
import HomeView from '../components/home.vue'
import IndexView from '../components/Index.vue'
import Login from '../components/Login.vue'

const router = createRouter({
  history: createWebHistory(import.meta.env.BASE_URL),
  routes: [
    {
      path:'/index',
      name:'index',
      component:IndexView
    },
    {
      path:'/',
      alias:'/login',  // 别名
      component:Login
    }
  ]
})

export default router

Login.Vue:

<!--<script>-->
<!--export default {-->
<!--  data(){-->
<!--    return {}-->
<!--  },-->
<!--  methods:{-->
<!--    login(){-->
<!--      this.$router.push('/index')-->
<!--    }-->
<!--  }-->
<!--}-->
<!--</script>-->
<script setup>

import {RouterLink, RouterView, useRouter} from 'vue-router'
const router = useRouter()
function login() {
  router.push('/index');
}
</script>
<template>
  <div>
      <button @click.prevent="login">确认</button>
  </div>
</template>
<style scoped>
</style>

index.Vue:

<script setup>
</script>
<template>
<h1>Hello world!</h1>
  <router-view></router-view>
</template>
<style scoped>
</style>

在内部跳转页面：

• 方法一：在App.vue中补充函数

// 或写为<script setup>
<script setup>
import {RouterLink, RouterView, useRouter} from 'vue-router'
const router = useRouter()
function goto() {
  router.push('/home');
}
</script>


<script>
export default {
  data(){
    return {}
  },
  methods:{
    goto(){
      this.$router.push('/home')
    }
  }
}
</script>
<template>
  <h1>首页</h1>
  <el-button @click="goto">登录</el-button>
  <!--            <router-link to="/login" tag="button">登录</router-link>-->
  <RouterView/>
</template>

路由：

    //   path:'/home',
    //   name:'home',
    //   component:HomeView