vue-路由精讲

1.我们继续上一个案例 vue -- 路由精讲制作导航 -- 从无到有 ，在 about文件夹下 创建一些文件夹。如下：

 

2.  编写about.vue代码。当我们点击导航中 “关于我们” ，就会显示该部分内容。代码中写了四个可供点击后可以跳转的模块。和   <router-view></router-view> 表示你点击了哪个组件，哪个组件就会渲染到这里来。

其中注意：css样式,我们直接引入bootstrap中的导航的样式，在标签中直接添加class属性的值就可以了。

about.vue代码

<template>
    <div>
        <div class="row mb-5">   //row 代表行， mb-5 表示margin-bottom距离下面5
            <!-- 导航 -->
            <div class="col-4">  //四列
                <div class="list-group mb-5">
                    <router-link tag="li" class="nav-link" :to="{name:'historyLink'}">
                        <a class="list-group-item list-group-item-action">历史订单</a>    
                    </router-link>
                    <router-link tag="li" class="nav-link" :to="{name:'contactLink'}">
                        <a class="list-group-item list-group-item-action">联系我们</a>    
                    </router-link>
                    <router-link tag="li" class="nav-link" :to="{name:'orderingGuideLink'}">
                        <a class="list-group-item list-group-item-action">点餐文档</a>    
                    </router-link>
                    <router-link tag="li" class="nav-link" :to="{name:'deliveryLink'}">
                        <a class="list-group-item list-group-item-action">快递信息</a>    
                    </router-link>
                </div>
            </div>
            <!-- 导航所对应的内容 -->
            <div class="col-8">  //8列
                <router-view></router-view>
            </div>
        </div>
    </div>
</template>

3.配置二级路由和三级路由

注意：我们要在about页面下添加四个路由，用到 children 属性,  而且还用到 redirect 属性，默认跳转到指定路由，具体操作看代码和注释。

main.js代码

import Vue from 'vue'
import VueRouter from 'vue-router'
import App from './App.vue'
import Home from './components/Home.vue'
import Menu from './components/Menu.vue'
import Admin from './components/Admin.vue'
import About from './components/about/About.vue'
import Login from './components/Login.vue'
import Register from './components/Register.vue'

//二级路由
import Contact from './components/about/Contact.vue'
import Delivery from './components/about/Delivery.vue'
import History from './components/about/History.vue'
import OrderingGuide from './components/about/OrderingGuide.vue'

//三级路由
import Phone from './components/about/contact/Phone.vue'
import PersonName from './components/about/contact/PersonName.vue'




Vue.use(VueRouter)
核心代码  二级路由和三级路由的跳转
const routes = [
    {path:'/',      name:'homeLink',   component:Home},
    {path:'/menu',  name:'menuLink',   component:Menu},
    {path:'/admin', name:'adminLink',  component:Admin},
    {path:'/about', name:'aboutLink', redirect:'/about/contact', component:About, children:[            
　　　　　　　　　　　　　　　　　　　　　　　//表示about页面中默认跳转到/about/contact 这个路由页面下。
        {path:'/about/contact', name:'contactLink', redirect:'/personName', component:Contact, children:[
　　　　　　　　　　　　　　　　　　　　　　　//在/about/contact页面中默认展现三级路由personName 的内容。
            {path:'/phone', name:"phoneNumber", component:Phone},
            {path:'/personName', name:"personName", component:PersonName},
        ]},
        {path:'/history',name:'historyLink',component:History},
        {path:'/delivery',name:'deliveryLink',component:Delivery},
        {path:'/orderingGuide',name:'orderingGuideLink',component:OrderingGuide},
    ]},
    {path:'/login', name:'loginLink',  component:Login},
    {path:'/register', name:'registerLink', component:Register},
    // {path:'*',redirect:'/'},
]

const router = new VueRouter({
    routes,
    mode:'history'
})

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

Contact.vue代码

<template>
    <div class="card text-dark bg-light mb-3">
        <div class="card-header">联系我们</div>
        <div class="card-body">
            <h4 class="card-title">联系我们</h4>
            <p class="card-text">1623487989@qq.com</p>

            <router-link :to="{name:'phoneNumber'}">电话</router-link>
            <router-link :to="{name:'personName'}">联系人</router-link>

            <router-view></router-view>
        </div>
    </div>
</template>

Delivery.vue代码

<template>
    <div class="card text-dark bg-light mb-3">
        <div class="card-header">快递信息</div>
        <div class="card-body">
            <h4 class="card-title">快递信息</h4>
            <p class="card-text">1623487989@qq.com</p>
        </div>
    </div>
</template>

History.vue代码

<template>
    <div class="card text-dark bg-light mb-3">
        <div class="card-header">历史订单</div>
        <div class="card-body">
            <h4 class="card-title">历史订单</h4>
            <p class="card-text">1623487989@qq.com</p>
        </div>
    </div>
</template>

OrderingGuide.vue代码

<template>
    <div class="card text-dark bg-light mb-3">
        <div class="card-header">点餐文档</div>
        <div class="card-body">
            <h4 class="card-title">点餐文档</h4>
            <p class="card-text">1623487989@qq.com</p>
        </div>
    </div>
</template>

Phone.vue代码

 <template> <h1>400040040404404</h1> </template> 

PersonName.vue代码

 <template> <h1>小劭</h1> </template>