初试Vue Router

https://v3.router.vuejs.org/zh/guide/

一个简单例子

先用脚手架创建一个原始项目，然后cd到项目根目录下

①npm install vue-router@3（对应Vue2）

②准备几个简单的组件备用（这种组件叫做路由组件，可以进一步和一般组件区分一下）

Page1.vue：

<template>
  <div>
    <h1>这是页面1</h1>
    <p>路径参数测试</p>
    <p>该组件是否会重复创建?</p>
    <p>name:{{$route.params.name}}</p>
  </div>  
</template>

<script>
export default {
  name: 'Page1',
  beforeCreate() {
    console.log('beforeCreate被调用')
  },
  created() {
    console.log('created被调用')
  },
  mounted() {
    console.log('mounted被调用')
    console.log(this.$route)
  },
}
</script>

③写配置

./router/index.js：

import Vue from 'vue'
import VueRouter from 'vue-router'
import Page1 from '../components/Page1.vue'
import Page2 from '../components/Page2.vue'
import Page3 from '../components/Page3.vue'

Vue.use(VueRouter)

export default new VueRouter({
  routes: [
    {
      path: '/p1',
      component: Page1,
    },
    {
      path: '/p2',
      component: Page2,
    },
    {
      path: '/p3',
      component: Page3,
    },
  ],
})
  

④启用配置

main.js：

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

Vue.config.productionTip = false

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

⑤应用到页面

<template>
  <div>
    <router-link to="/p1">Go to P1</router-link>
    <router-link to="/p2">Go to P2</router-link>
    <router-link to="/p3">Go to P3</router-link>
    <router-view></router-view>
  </div>
</template>

<script>

export default {
  name: 'App',
}
</script>

<style>
  a {
    margin: 10px;
    background-color: aquamarine;
  }
</style>