Vue学习笔记-项目开发3.2将Ajax数据展示（父子组件传值）

一、Home组件所用数据

{
  "ret": true,
  "data": {
  	"city": "北京",
    "swiperList": [{
        "id": "0001",
        "imgUrl": "http://img1.qunarzz.com/piao/fusion/1801/1a/94428c6dea109402.jpg_640x200_2cf590d8.jpg"
      },{
        "id": "0002",
        "imgUrl": "http://img1.qunarzz.com/piao/fusion/1802/42/7c92b9a381e46402.jpg_640x200_1cdce2a4.jpg"
      },{
        "id": "0003",
        "imgUrl": "http://img1.qunarzz.com/piao/fusion/1802/51/e78f936a5b404102.jpg_640x200_c14f0b3a.jpg"
      },{
        "id": "0004",
        "imgUrl": "http://img1.qunarzz.com/piao/fusion/1712/91/a275569091681d02.jpg_640x200_0519ccb9.jpg"
      }],
    "iconList": [{
        "id": "0001",
        "imgUrl": "http://img1.qunarzz.com/piao/fusion/1611/54/ace00878a52d9702.png",
        "desc": "景点门票"
      }, {
        "id": "0002",
        "imgUrl": "http://img1.qunarzz.com/piao/fusion/1711/df/86cbcfc533330d02.png",
        "desc": "滑雪季"
      }, {
        "id": "0003",
        "imgUrl": "http://img1.qunarzz.com/piao/fusion/1710/a6/83f636bd75ae6302.png",
        "desc": "泡温泉"
      }, {
        "id": "0004",
        "imgUrl": "http://img1.qunarzz.com/piao/fusion/1611/35/2640cab202c41b02.png",
        "desc": "动植园"
      }, {
        "id": "0005",
        "imgUrl": "http://img1.qunarzz.com/piao/fusion/1611/d0/e09575e66f4aa402.png",
        "desc": "游乐园"
      }, {
        "id": "0006",
        "imgUrl": "http://img1.qunarzz.com/piao/fusion/1611/59/569d3c096e542502.png",
        "desc": "必游榜单"
      }, {
        "id": "0007",
        "imgUrl": "http://img1.qunarzz.com/piao/fusion/1611/17/4bd370f3eb1acd02.png",
        "desc": "演出"
      }, {
        "id": "0008",
        "imgUrl": "http://img1.qunarzz.com/piao/fusion/1611/7f/b1ea3c8c7fb6db02.png",
        "desc": "城市观光"
      }, {
        "id": "0009",
        "imgUrl": "http://img1.qunarzz.com/piao/fusion/1611/a9/ffc620dbda9b9c02.png",
        "desc": "一日游"
      }],
    "recommendList": [{
        "id": "0001",
        "imgUrl": "http://img1.qunarzz.com/sight/p0/1409/19/adca619faaab0898245dc4ec482b5722.jpg_140x140_80f63803.jpg",
        "title": "故宫",
        "desc": "东方宫殿建筑代表，世界宫殿建筑典范"
      }, {
        "id": "0002",
        "imgUrl": "http://img1.qunarzz.com/sight/p0/1511/d2/d2aec2dfc5aa771290.water.jpg_140x140_abb362a7.jpg",
        "title": "南山滑雪场",
        "desc": "北京专业级滑雪圣地"
      }, {
        "id": "0003",
        "imgUrl": "http://img1.qunarzz.com/sight/p0/1501/f4/f467729126949c3a.water.jpg_140x140_ef235b1c.jpg",
        "title": "天安门广场",
        "desc": "我爱北京天安门，天安门上太阳升"
      }, {
        "id": "0004",
        "imgUrl": "http://img1.qunarzz.com/sight/p0/1501/40/40b2b6c951b28fdd.water.jpg_140x140_1c863e5c.jpg",
        "title": "水立方",
        "desc": "中国的荣耀，阳光下的晶莹水滴"
      }, {
        "id": "0005",
        "imgUrl": "http://img1.qunarzz.com/sight/p0/201308/23/b283071686e64dfec8d65eac.jpg_140x140_8c5a7c49.jpg",
        "title": "温都水城养生馆",
        "desc": "各种亚热带植物掩映其间仿佛置身热带雨林"
      }],
    "weekendList": [{
        "id": "0001",
        "imgUrl": "http://img1.qunarzz.com/sight/source/1510/6e/1ea71e2f04e.jpg_r_640x214_aa6f091d.jpg",
        "title": "北京温泉排行榜",
        "desc": "细数北京温泉，温暖你的冬天"
      }, {
        "id": "0002",
        "imgUrl": "http://img1.qunarzz.com/sight/source/1505/aa/7baaf8a851d221.jpg_r_640x214_1431200f.jpg",
        "title": "北京必游TOP10",
        "desc": "来北京必去的景点非这些地方莫属"
      }, {
        "id": "0003",
        "imgUrl": "http://img1.qunarzz.com/sight/source/1505/9e/21df651e19af5d.jpg_r_640x214_3ea5bb38.jpg",
        "title": "寻找北京的皇城范儿",
        "desc": "数百年的宫廷庙宇，至今依旧威严霸气"
      }, {
        "id": "0004",
        "imgUrl": "http://img1.qunarzz.com/sight/source/1505/ce/bc89bc2f0e33ea.jpg_r_640x214_3e408453.jpg",
        "title": "学生最爱的博物馆",
        "desc": "周末干嘛？北京很多博物馆已经免费开放啦"
      }, {
        "id": "0005",
        "imgUrl": "http://img1.qunarzz.com/sight/source/1505/b2/fde1bfcd057a52.jpg_r_640x214_bbf3fa44.jpg",
        "title": "儿童剧场，孩子的乐园",
        "desc": "带宝贝观看演出，近距离体验艺术的无穷魅力"
      }]
  }
}

二、将各组件的数据全部替换成json中的数据

      1、父组件设置

<template>
  <div>
    //3.将各个变量传递给各个子组件《父传子用变量》
    <home-header :city="city"></home-header>
    <home-swiper :list="swiperList"></home-swiper>
    <home-icons :list="iconList"></home-icons>
    <home-recommend :list="recommend"></home-recommend>
    <home-weekend :list="weekendList"></home-weekend>
          <div>test</div>
  </div>
</template>
 
<script>
import HomeHeader from './components/Header'
import HomeSwiper from './components/Swiper'
import HomeIcons from './components/Icons'
import HomeRecommend from './components/Recommend'
import HomeWeekend from './components/Weekend'
import axios from 'axios'
export default {
  name: 'Home',
  components: {
    HomeHeader,
    HomeSwiper,
    HomeIcons,
    HomeRecommend,
    HomeWeekend
  },
  data () {
    //1.先定义各个组件传递数据的变量
    return {
      city: '',
      swiperList: [],
      iconList: [],
      recommend: [],
      weekendList: []
    }
  },
  methods: {
    getHomeInfo () {
      axios.get('/api/index.json')
        .then(this.getHomeInfoSucc)
    },
    getHomeInfoSucc (res) {
      //2.然后将json的数据进行分发
      res = res.data
      //如果res.ret的值为true,并且data有数据，给各组件变量赋值
      if (res.ret && res.data) {
        const data = res.data
        this.city = data.city
        this.swiperList = data.swiperList
        this.iconList = data.iconList
        this.recommend = data.recommendList
        this.weekendList = data.weekendList
      }
    }
  },
  mounted () {
    this.getHomeInfo()
  }
}
</script>
 
<style>
</style>

       2、子组件接收 子在props中定义接收变量，然后对这个数据进行使用

// header.vue
<script>
export default {
  name: 'HomeHeader',
  props: {
    city: String
  }
}
</script>
 
<div class="Header-right">
    {{this.city}}
    <span class="iconfont arrow-icon">&#xe64a;</span>
</div>
 
//swiper.vue
<script>
export default {
  name: 'HomeSwiper',
  props: {
    list: Array
  },
  data () {
    return {
      swiperOption: {
        pagination: '.swiper-pagination',
        loop: true
      }
    }
  },
//这个计算函数时为了让滚动图从第一页开始滚动。
  computed: {
    showSwiper () {
      return this.list.length
    }
  }
}
</script>
<swiper :options="swiperOption" v-if="showSwiper">
    <swiper-slide v-for="item of list" :key="item.id">
        <img class="swiper-img" :src="item.imgUrl" />
    </swiper-slide>
    <div class="swiper-pagination"  slot="pagination"></div>
    <div class="swiper-button-next" slot="button-next"></div> -->
</swiper>
 
//recommend.vue
<script>
export default {
  name: 'HomeRecommend',
  props: {
    list: Array
  }
}
</script>
<li
    class="item border-bottom"
    v-for="item of list"
    :key="item.id"
>
 
//icons.vue
<script>
export default {
  name: 'HomeIcons',
  props: {
    list: Array
  },
//这里是设置图标不要自己滚动来滚动去
  data () {
    return {
      swiperOption: {
        autoplay: false
      }
    }
  },
  computed: {
    pages () {
      const pages = []
      this.list.forEach((item, index) => {
        const page = Math.floor(index / 8)
        if (!pages[page]) {
          pages[page] = []
        }
        pages[page].push(item)
      })
      return pages
    }
  }
}
</script>
 
//weekend.vue
<script>
export default {
  name: 'HomeWeekend',
  props: {
    list: Array
  }
}
</script>
<li
  class="item border-bottom"
  v-for="item of list"
  :key="item.id"
>