前端框架VUE----cli脚手架（框架）

一、创建vue项目

npm install vue-cli -g   #-g全局
(sudo)npm install vue-cli -g   #mac笔记本

vue-init webpack myvue  #项目的名字
cd muvue
npm install
npm run dev

二、目录结构的说明

出现下面这样的图就说明成功了

三、import和require的区别

import一定要放在文件顶部，他相当于一个指针引用了文件，并没有吧文件包含进来，需要调用文件时才引入
require可以吧文件放在任何位置，他是吧文件直接包含进来

四、设置文件路径的流程

1）建立组件（.vue的文件）
2）配置路由（index.js文件中配置）
3）<router-link></router-link>
4)<router-view></router-view>
5)import 包名 from "组件路径"
6)comonents进行注册

五、实现异步加载

//异步
vue-resource:实现异步加载数据（已经弃用）
axios：实现异步加载数据
npm install axios --save-dev
npm install vue-axios --save-dev

六、VUE的生命周期

1、定义vue对象并实例化
2、执行created函数
3、编译模板，只会编译template的模板
4、吧HTML元素渲染到页面当中
5、执行mounted函数，（加载）相当于onload
6、如果有元素的更新，就执行update函数
7、销毁实例

六、项目实战

仿抽屉网站

ALL.vue

<template>
  <div class='box'>
    <ul>
      <li v-for='item in arr'>
        <div class='p1'>
          <router-link :to="{path:'/detail',query:{ids:item.id}}">{{item.content}} </router-link>
        </div>
        <div class="p2">
          <img :src="item.imgUrl">
        </div>
      </li>

    </ul>

  </div>
</template>

<script>
  export default {
    name: 'HelloWorld',
    data () {
      return {
        arr: []
      }
    },
    mounted () {
      var url = '../../static/news.json'
      var self=this;
      this.$axios.get(url)
        .then(function (response) {
          console.log(response.data.result.data);
          self.arr = response.data.result.data;
        })
        .catch(function (error) {
          console.log(error);
        })
    }
  }
</script>

<!-- Add "scoped" attribute to limit CSS to this component only -->
<style scoped>
  h1, h2 {
    font-weight: normal;
  }

  ul {
    list-style-type: none;
    padding: 0;
  }

  li {
    display: inline-block;
    margin: 0 10px;
  }

  a {
    color: #42b983;
  }
.box{
   980px;
}
.p1{
  float:left;
  780px;
}
 img{
  float:right;
 }
</style>

DETAIL.vue

<template>
  <div class="box">
    <h1>我是详细页面{{id}}</h1>
    <ul>
      <li>
        <div class="p1">
          {{obj.content}}
        </div>
        <div class="p2">
          <img :src="obj.imgUrl">
        </div>

      </li>
    </ul>
  </div>
</template>

<script>
  export default {
    name: 'Detail',
    data () {
      return {
          obj:{} ,
          id:this.$route.query.ids
      }
    },
    mounted(){
      var url = "../../static/news.json"
      var self =this;
      this.$axios.get(url,{
          params:{id:this.id}
      })
        .then(function (response) {
          //console.log(response.data.result.data);
          self.obj = response.data.result.data[0];
        })
        .catch(function (error) {
          console.log(error);
        })
    }
  }
</script>

<!-- Add "scoped" attribute to limit CSS to this component only -->
<style scoped>
  h1, h2 {
    font-weight: normal;
  }

  ul {
    list-style-type: none;
    padding: 0;
  }

  li {
    display: inline-block;
    margin: 0 10px;
  }

  a {
    color: #42b983;
  }
  .box{
     980px;
  }

  .p1{
    float:left;
    700px;
  }
  .p2{
    float:right;
  }
</style>

DUANZI.vue

<template>
  <div>
    <h1> 我是段子手</h1>
  </div>
</template>

<script>
export default {
  name: 'HelloWorld',
  data () {
    return {

    }
  }
}
</script>

<!-- Add "scoped" attribute to limit CSS to this component only -->
<style scoped>
h1, h2 {
  font-weight: normal;
}
ul {
  list-style-type: none;
  padding: 0;
}
li {
  display: inline-block;
  margin: 0 10px;
}
a {
  color: #42b983;
}
</style>

NaveList.vue

<template>
  <div>
    <router-link to="/">首页</router-link>
    <router-link to="/news">新闻</router-link>
    <router-link to="/duanzi">段子</router-link>
  </div>
</template>

<script>
export default {
  name: 'HelloWorld',
  data () {
    return {

    }
  }
}
</script>

<!-- Add "scoped" attribute to limit CSS to this component only -->
<style scoped>
h1, h2 {
  font-weight: normal;
}
ul {
  list-style-type: none;
  padding: 0;
}
li {
  display: inline-block;
  margin: 0 10px;
}
a {
  color: #42b983;
}
</style>

NEWS.vue

<template>
  <div>
    <h1> 我是新闻</h1>

  </div>
</template>

<script>
export default {
  name: 'HelloWorld',
  data () {
    return {

    }
  }
}
</script>

<!-- Add "scoped" attribute to limit CSS to this component only -->
<style scoped>
h1, h2 {
  font-weight: normal;
}
ul {
  list-style-type: none;
  padding: 0;
}
li {
  display: inline-block;
  margin: 0 10px;
}
a {
  color: #42b983;
}
</style>

index.js

import Vue from 'vue'
import Router from 'vue-router'
import HelloWorld from '@/components/HelloWorld'
import ALL from '@/components/All'
import NEWS from '@/components/NEWS'
import DUANZI from '@/components/duanzi'
import Detail from '@/components/Detail'

Vue.use(Router)

export default new Router({
  routes: [
    {
      path: '/hw',
      name: 'HelloWorld',
      component: HelloWorld
    },
    {
      path: '/',
      name: 'ALL',
      component: ALL
    },
    {
      path: '/news',
      name: 'NEWS',
      component: NEWS
    },
    {
      path: '/duanzi',
      name: 'duanzi',
      component: DUANZI
    },
    {
      path: '/detail',
      name: 'Detail',
      component: Detail
    },


  ]
})

App.vue

<template>
  <div id="app">
  <NavList></NavList>
    <router-view></router-view>
  </div>
</template>

<script>
import NavList from './components/NavList'
export default {
  name: 'App',
  components: {NavList}
}
</script>

<style>
#app {
  font-family: 'Avenir', Helvetica, Arial, sans-serif;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  text-align: center;
  color: #2c3e50;
  margin-top: 60px;
}
</style>

main.js

// The Vue build version to load with the `import` command
// (runtime-only or standalone) has been set in webpack.base.conf with an alias.
import Vue from 'vue'
import App from './App'
import router from './router'
import axios from 'axios'
import VueAxios from 'vue-axios'

Vue.prototype.$axios = axios;

//Vue.use(axios, VueAxios)
//Vue.config.productionTip = false

/* eslint-disable no-new */
new Vue({
  el: '#app',
  router,
  components: { App },
  template: '<App/>'
})

 项目需要注意的问题

 问题一：在手动执行webpack app/a.js publicndle.js打包时出错的解决方法需要修改为： require("style-loader!css-loader!./style.css")

 问题2：脚手架生成项目后，运行 npm run dev启动项目后，
             如果想把地址栏中的  #去掉，如：http://localhost:8080/#/news，需要在
             router文件夹下的index.js文件中，加入 mode: "history"

问题三：引入axios的2种方法：
　　　　需要在main.js中进行设置：这2种方法都可以，但引用顺序不能翻转。