vue学习笔记--我遇到的问题

在vue中使用sass？

安装依赖 cnpm install --save-dev node-sass sass-loader

vue中实现tab切换

<template>
  <div>
    <nav>
      <div class="nav-list" :class="{active:index==num}" v-for="(item ,index) in navList" @click="tab(index)">{{item}}</div>
    </nav>
    <div class="tab-main">
      <div class="tab-item" v-for="item in contList" v-show="index==num">{{item}}</div>
    </div>
  </div>
</template>
<script>
  export default {
    data () {
        return {
          num:0;
        }
    },
    methods:{
      tab(index){
        this.num = index;
      }
    }
  }
</script>

轮播图

使用vue-awesome-swiper官网链接
1.下载插件
npm install vue-awesome-swiper --save
2.全局注册main.js

var VueAwesomeSwiper = require('vue-awesome-swiper')
Vue.use(VueAwesomeSwiper)

3.模板中使用

<template>
  <swiper :options="swiperOption" ref="mySwiper">
    <!-- slides -->
    <swiper-slide>I'm Slide 1</swiper-slide>
    <swiper-slide>I'm Slide 2</swiper-slide>
    <swiper-slide>I'm Slide 3</swiper-slide>
    <swiper-slide>I'm Slide 4</swiper-slide>
    <swiper-slide>I'm Slide 5</swiper-slide>
    <swiper-slide>I'm Slide 6</swiper-slide>
    <swiper-slide>I'm Slide 7</swiper-slide>
    <!-- Optional controls -->
    <div class="swiper-pagination"  slot="pagination"></div>//
    <div class="swiper-button-prev" slot="button-prev"></div>
    <div class="swiper-button-next" slot="button-next"></div>
    <div class="swiper-scrollbar"   slot="scrollbar"></div>
  </swiper>
</template>
<script>
 import { swiper, swiperSlide } from 'vue-awesome-swiper'
  // swiper options example:
  export default {
    name: 'carrousel',
    components: {
      swiper,
      swiperSlide
   },
    data() {
      return {
        swiperOption: {//以下配置不懂的，可以去swiper官网看api，链接http://www.swiper.com.cn/api/
          // notNextTick是一个组件自有属性，如果notNextTick设置为true，组件则不会通过NextTick来实例化swiper，也就意味着你可以在第一时间获取到swiper对象，<br>　　　　　　　　假如你需要刚加载遍使用获取swiper对象来做什么事，那么这个属性一定要是true
          notNextTick: true,
          // swiper configs 所有的配置同swiper官方api配置
          autoplay: 3000,
          direction : 'vertical',
          grabCursor : true,
          setWrapperSize :true,
          autoHeight: true,
          pagination : '.swiper-pagination',
          paginationClickable :true,
          prevButton:'.swiper-button-prev',//上一张
          nextButton:'.swiper-button-next',//下一张
          scrollbar:'.swiper-scrollbar',//滚动条
          mousewheelControl : true,
          observeParents:true,
          // 如果自行设计了插件，那么插件的一些配置相关参数，也应该出现在这个对象中，如下debugger
          debugger: true,
        }
      }
    },
 
  }

子组件向父组件传值

// 子组件  src/components/search.vue
<template>
  <input type="" @keyup="query" v-model="text">
</template>
<script>
  export default {
    methods:{
      data () {
        text:''
      }
      query () {
        this.$emit('searchText',this.text);
      }
    }
  }
</script>
//父组件
<template>
  <search-box @searchText="search"></seach-box>
  {{inputText}}
</template>
<script>
  import SearchBox from "src/components/search"
  export default {
    components:{
      SearchBox
    },
    methods:{
      data () {
        inputText:''
      }
      search (data) {
        this.inputText = data;
      }
    }
  }
</script>

实现如图所示的轮播nav

轮播图第一屏 轮播图第二屏

<template>
  <swiper>
      <swiper-slide v-for="(page, index) of pages" :key="index">
        <div
          class="icon"
          v-for="item of page"
          :key="item.id"
        >
          <div class='icon-img'>
            <img class='icon-img-content' :src='item.imgUrl' />
          </div>
          <p class="icon-desc">{{item.desc}}</p>
        </div>
      </swiper-slide>
    </swiper>
</template>
<script>
export default {
  computed:{
    pages () {
      let pages = [];
      this.iconList.forEach((item, index) => {
         let page = Math.floor(index / 8) {
           if (!pages[page]) {
              pages[page] = []
            }
            pages[page].push(item)
         }
      })
      return pages
    }
  }
}

</script>

实现层级嵌套列表时，我们可以在组件中调用自身组件，

<template>
  <div>
    <div
      class="item"
      v-for="(item, index) of list"
      :key="index"
    >
      <div class="item-title border-bottom">
        <span class="item-title-icon"></span>
        {{item.title}}
      </div>
      <div v-if="item.children" class="item-chilren">
        <detail-list :list="item.children"></detail-list>
      </div>
    </div>
  </div>
</template>