vue-router 基本使用

const routes = [
  { path: '/home', component: Home },
  { path: '/about', component: About }
]

const router = new VueRouter({
      routes // routes: routes 的简写
})

const app = new Vue({
  router
}).$mount('#app')

<template>
    <div>
        <h1>home</h1>
        <p>{{msg}}</p>
    </div>
</template>
<script>
    export default {
        data () {
            return {
                msg: "我是home 组件"
            }
        }
    }
</script>

<template>
    <div>
        <h1>about</h1>
        <p>{{aboutMsg}}</p>
    </div>
</template>
<script>
    export default {
        data () {
            return {
                aboutMsg: '我是about组件'
            }
        }
    }
</script>

<template>
  <div id="app">
    <img src="./assets/logo.png">
    <header>
    <!-- router-link 定义点击后导航到哪个路径下 -->
      <router-link to="/home">Home</router-link>
      <router-link to="/about">About</router-link>
    </header>
    <!-- 对应的组件内容渲染到router-view中 -->
    <router-view></router-view>   
  </div>
</template>

<script>
export default {
  
}
</script>

import Vue from "vue";
import VueRouter from "vue-router";

// 引入组件
import home from "./home.vue";
import about from "./about.vue";

// 要告诉 vue 使用 vueRouter
Vue.use(VueRouter);

const routes = [
    {
        path:"/home",
        component: home
    },
    {
        path: "/about",
        component: about
    }
]

var router =  new VueRouter({
    routes
})
export default router;

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

// 引入路由
import router from "./router.js"    // import router 的router 一定要小写， 不要写成Router, 否则报 can't match的报错
new Vue({
  el: '#app',
  router,  // 注入到根实例中
  render: h => h(App)
})

const routes = [
    {
        path:"/home",
        component: home
    },
    {
        path: "/about",
        component: about
    },
    // 重定向
    {
        path: '/', 
        redirect: '/home' 
    }
]

<template>
  <div id="app">
    <img src="./assets/logo.png">
    <header>
      <router-link to="/home">Home</router-link>
      <router-link to="/about">About</router-link>
     <!--  增加两个到user组件的导航，可以看到这里使用了不同的to属性 -->
      <router-link to="/user/123">User123</router-link>
      <router-link to="/user/456">User456</router-link>
    </header>
    <router-view></router-view>   
  </div>
</template>

const routes = [
    {
        path:"/home",
        component: home
    },
    {
        path: "/about",
        component: about
    },
    /*新增user路径，配置了动态的id*/
    {
        path: "/user/:id",
        component: user
    },
    {
        path: '/', 
        redirect: '/home' 
    }
]

<template>
    <div>
        <h1>User</h1>
        <div>我是user组件</div>
    </div>
</template>
<script>
    export default {

    }
</script>

<template>
    <div>
        <h1>User</h1>
        <div>我是user组件, 动态部分是{{dynamicSegment}}</div>
    </div>
</template>
<script>
    export default {
        computed: {
            dynamicSegment () {
                return this.$route.params.id
            }
        }
    }
</script>

<script>
    export default {
        data () {
            return {
                dynamicSegment: ''
            }
        },
        watch: {
            $route (to,from){
                // to表示的是你要去的那个组件，from 表示的是你从哪个组件过来的，它们是两个对象，你可以把它打印出来，它们也有一个param 属性
                console.log(to);
                console.log(from);
                this.dynamicSegment = to.params.id
            }
        }
    }
</script>

<template>
    <div>
        <h1>home</h1>
<!-- router-link 的to属性要注意，路由是先进入到home,然后才进入相应的子路由如 phone,所以书写时要把 home 带上 -->
        <p>
            <router-link to="/home/phone">手机</router-link>
            <router-link to="/home/tablet">平板</router-link>
            <router-link to="/home/computer">电脑</router-link>
        </p>
        <router-view></router-view>
    </div>
</template>

const routes = [
    {
        path:"/home",
　　　　　// 下面这个属性也不少，因为，我们是先进入home页面，才能进入子路由
        component: home,
　　　　 // 子路由
        children: [
            {
                path: "phone",
                component: phone
            },
            {
                path: "tablet",
                component: tablet
            },
            {
                path: "computer",
                component: computer
            }
        ]
    },
    {
        path: "/about",
        component: about
    },
    {
        path: "/user/:id",
        component: user
    },
    {
        path: '/', 
        redirect: '/home' 
    }
]

children: [
    {
        path: "phone",
        component: phone
    },
    {
        path: "tablet",
        component: tablet
    },
    {
        path: "computer",
        component: computer
    },
    // 当进入到home时，下面的组件显示
    {
        path: "",
        component: phone
    }
]

{
        path: "/user/:id",
        name: "user",
        component: user
}

 <router-link to="/user/123">User123</router-link> // 和下面等价 

 <router-link :to="{ name: 'user', params: { userId: 123 }}">User</router-link>   // 当使用对象作为路由的时候，to前面要加一个冒号,表示绑定