Vue实战项目开发--详情页面开发

水深无声 2022-04-17 01:56 253阅读 0赞

### 详情页面动态路由及banner布局 ###

*  创建一个detail-banner的分支，在router/index.js下添加这个路由，然后在pages文件新建detail文件夹和在detail下新建components文件夹

![20181111184744999.png][]

*  Detail.vue：
    
        <template>
          <div>
            <detail-banner></detail-banner>
          </div>
        </template>
        
        <script>
        import DetailBanner from './components/Banner'
        export default {
          name: 'Datail',
          components: {
            DetailBanner
          }
        }
        </script>
        
        <style lang="stylus" scoped>
        
        </style>
    
    banner.vue：
    
        <template>
          <div class="banner">
            <img 
              class="banner-img" 
              src="//img1.qunarzz.com/sight/p0/1612/1d/1d9a740c1f9e0efaa3.img.jpg_600x330_3b0fdac5.jpg" 
              alt=""
            >
            <div class="banner-info">
              <div class="banner-title">
                成都海昌极地海洋公园(AAAA景区)
              </div>
              <div class="banner-num">
                <i class="iconfont banner-icon"></i>39
              </div>
            </div>
          </div>
        </template>
        
        <script>
        export default {
          name: 'DatailBanner'
        }
        </script>
        
        <style lang="stylus" scoped>
          .banner
            overflow hidden
            position relative
            height 0
            padding-bottom 55%
            .banner-img
              width 100%
            .banner-info
              display flex
              position absolute
              left 0
              right 0
              bottom 0
              line-height .6rem
              color #ffffff
              background-image linear-gradient(top, rgba(0, 0, 0, 0), rgba(0, 0, 0, .8))
              .banner-title
                flex 1
                font-size .28rem
                padding 0 .2rem
              .banner-num
                height .32rem
                line-height .32rem
                margin-top .14rem
                padding 0 .4rem
                border-radius .2rem
                background rgba(0, 0, 0, .8)
                font-size .24rem
                .banner-icon
                  font-size .24rem
                  margin-right .1rem
        </style>
    
    还有这里使用新的icon，需要在iconfont的项目新加上图片的icon，并下载到本地，把项目的这些替换掉![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3dvXzkyMTExMA_size_16_color_FFFFFF_t_70][]

还需要把iconfont.css中的base64那行替换成新的iconfont.css中的base64的代码 ![2018111118535816.png][]

###  公用图片画廊组件拆分 ###

新建一个detail-banner分支，并创建一个公用的公用图片画廊组件Gallary.vue

<template>
      <div class="container" @click="handleGallaryClick">
        <div class="wrapper">
          <swiper :options="swiperOptions">
              <swiper-slide
                v-for="(item,index) of imgs"
                :key="index"
              >
                <img class="gallary-img" :src="item">
              </swiper-slide>
              <div class="swiper-pagination" slot="pagination"></div>
          </swiper>
        </div>
      </div>
    </template>
    
    <script>
    export default {
      name: 'CommonGallary',
      props: {
        imgs: {
          type: Array,
          default () {
            return []
          }
        }
      },
      data () {
        return {
          swiperOptions: {
            pagination: '.swiper-pagination',
            paginationType: 'fraction',
            observeParents: true,
            observer: true
          }
        }
      },
      methods: {
        handleGallaryClick () {
          this.$emit('close')
        }
      }
    }
    </script>
    
    <style lang="stylus" scoped>
      .container >>> .swiper-container
        overflow inherit
      .container
        display flex
        flex-direction column
        justify-content center
        z-index 99
        position fixed
        left 0
        right 0
        top 0
        bottom 0
        background #000000
        .wrapper
          width 100%
          height 0
          padding-bottom 100%
          .gallary-img
            width 100%
          .swiper-pagination
            color #ffffff
            bottom -1rem
    </style>

上面的代码使用的props来实现子组件来得到父组件传来的值，使用$emit向父组件传递方法(同时也可以把值一起传到父组件)

父组件Banner.vue

<template>
      <div>
        <div class="banner" @click="handleBannerClick">
          <img 
            class="banner-img" 
            src="//img1.qunarzz.com/sight/p0/1612/1d/1d9a740c1f9e0efaa3.img.jpg_600x330_3b0fdac5.jpg" 
            alt=""
          >
          <div class="banner-info">
            <div class="banner-title">
              成都海昌极地海洋公园(AAAA景区)
            </div>
            <div class="banner-num">
              <i class="iconfont banner-icon"></i>39
            </div>
          </div>
        </div>
        <common-gallary 
          :imgs="imgs" 
          v-show="showGallary"
          @close="handleGallaryClose"
        ></common-gallary>
      </div>
    </template>
    
    <script>
    import CommonGallary from 'common/gallary/Gallary'
    export default {
      name: 'DatailBanner',
      components: {
        CommonGallary
      },
      data () {
        return {
          showGallary: false,
          imgs:['http://img1.qunarzz.com/sight/p0/1612/ca/cae19b693b872602a3.img.jpg_350x240_8c2c93d2.jpg',
            'http://img1.qunarzz.com/sight/p0/1612/4c/4c8c800abd2e8aafa3.img.jpg_350x240_360ff6aa.jpg']
        }
      },
      methods: {
        handleBannerClick () {
          this.showGallary = true;
        },
        handleGallaryClose () {
          this.showGallary = false;
        }
      }
    }
    </script>
    
    <style lang="stylus" scoped>
      .banner
        overflow hidden
        position relative
        height 0
        padding-bottom 55%
        .banner-img
          width 100%
        .banner-info
          display flex
          position absolute
          left 0
          right 0
          bottom 0
          line-height .6rem
          color #ffffff
          background-image linear-gradient(top, rgba(0, 0, 0, 0), rgba(0, 0, 0, .8))
          .banner-title
            flex 1
            font-size .28rem
            padding 0 .2rem
          .banner-num
            height .32rem
            line-height .32rem
            margin-top .14rem
            padding 0 .4rem
            border-radius .2rem
            background rgba(0, 0, 0, .8)
            font-size .24rem
            .banner-icon
              font-size .24rem
              margin-right .1rem
    </style>

上面的代码有两个主要的方法handleBannerClick()和handleGallaryClose()，分别实现的是使公用画廊组件显示和隐藏，handleGallaryClose()是通过子组件向父组件发送信息和方法

### 实现header渐隐渐显效果 ###

Header.vue代码：

<template>
      <div>
        <router-link 
          tag='div' 
          to="/" 
          class="header-abs"
          v-show="showAbs"
        > 
          <i class="iconfont header-abs-back"></i>
        </router-link>
        <div 
          class="header-fixed"
          v-show="!showAbs"
          :style="opacityStyle"
        >
          <router-link to='/'>
            <div class="iconfont header-fixed-back"></div>
          </router-link>
          景点详情
        </div>
      </div>
    </template>
    
    <script>
    export default {
      name: 'DatailHeader',
      data () {
        return {
          showAbs: true,
          opacityStyle: {
            opacity: 0
          }
        }
      },
      activated () {
        window.addEventListener('scroll',this.handleScroll)
      },
      methods: {
        handleScroll () {
          const top = document.documentElement.scrollTop
          if(top > 60 ) {
            let opacity = top /140
            opacity = opacity > 1 ? 1 : opacity
            this.opacityStyle = { opacity}
            this.showAbs = false
          } else {
            this.showAbs = true
          }
        }
      }
    }
    </script>
    <style lang="stylus" scoped>
      @import '~styles/varibles.styl'
      .header-abs
        position absolute
        left .2rem
        top .2rem
        width .8rem
        height .8rem
        line-height .8rem
        border-radius .4rem
        text-align center
        background rgba(0, 0, 0, .6)
        .header-abs-back
          color #ffffff
          font-size .4rem
      .header-fixed
        position fixed
        top 0
        left 0
        right 0
        height $headerHeight
        line-height $headerHeight
        text-align center
        color #fff
        background $bgColor
        font-size .32rem
        .header-fixed-back
          position absolute
          top 0
          left 0
          width .64rem
          text-align center
          font-size .4rem
          color #ffffff
    </style>

实现的效果：在顶部是这样的样式

![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3dvXzkyMTExMA_size_16_color_FFFFFF_t_70 1][]

下滑超过60高时样式：

![20181205222725693.png][]

下拉时，下面的样式是逐渐显示出来的，使用:style动态样式实现的，通过window.addEventListener('scroll',this.handleScroll)来监听窗口的滑动，使用document.documentElement.scrollTop来判断滑动距顶部的距离

### 对全局事件的解绑 ###

在上面的Header.vue组件中使用了全局事件

activated () {
        window.addEventListener('scroll',this.handleScroll)
    }

上面的代码不止在详情页面中会触发，而且在其他页面也会触发，因为这是一个全局事件，所以这里我们需要使用对这个全局事件进行解绑

// 页面被隐藏或者页面被替换成新的组件时触发的
      deactivated () {
        window.removeEventListener('scroll',this.handleScroll)
      }

上面这段代码就实现了对全局事件的解绑

### 使用递归组件实现详情页列表 ###

首先创建一个detail-list分支，并创建一个detail-list.vue的组件

<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-children">
            <detail-list :list="item.children"></detail-list>
          </div>
        </div>
      </div>
    </template>
    
    <script>
    export default {
      name: 'DetailList',
      props: {
        list: Array
      }
    }
    </script>
    <style lang="stylus" scoped>
      .item-title-icon
        position relative
        left .06rem
        top .06rem
        display: inline-block
        width .36rem
        height .36rem
        background url(http://s.qunarzz.com/piao/image/touch/sight/detail.png) 0 -.45rem no-repeat
        margin-right .1rem
        background-size .4rem 3rem
      .item-title
        line-height .8rem
        font-size .32rem
        padding .2rem
      .item-children
        padding 0 .2rem
    </style>

上面的这段代码实现了递归实现，使用v-if判断是否有children数据，有就把这个children中的数据传到自身上，通过name来调用本身，从而实现了递归

在Deatil.vue中引入这个组件，并向子组件Lits.vue传入数据list

<template>
      <div>
        <detail-banner></detail-banner>
        <detail-header></detail-header>
        <div class="content">
          <detail-list :list="list"></detail-list>
        </div>
      </div>
    </template>
    
    <script>
    import DetailBanner from './components/Banner'
    import DetailHeader from './components/Header'
    import DetailList from './components/List'
    export default {
      name: 'Datail',
      components: {
        DetailBanner,
        DetailHeader,
        DetailList
      },
      data () {
        return {
          list: [
            {
              title: '成人票',
              children: [{
                title: '成人三馆联票',
                children: [{
                  title: '成人三馆联票- 某一连锁店销售'
                }]
              },{
                title: '成人五馆联票'
              }]
            },
            {
              title: '学生票'
            },
            {
              title: '儿童票'
            },
            {
              title: '特惠票'
            }
          ]
        }
      }
    }
    </script>
    
    <style lang="stylus" scoped>
    .content{
      height 50rem
    }
    </style>

### 使用Ajax获取动态数据 ###

新建一个分支detail-ajax，并引用一个detail.json来模拟数据  
Detail.vue修改：

<template>
      <div>
        <detail-banner
          :sightName="sightName"
          :bannerImg = "bannerImg"
          :bannerImgs ="gallaryImgs"
        ></detail-banner>
        <detail-header></detail-header>
        <div class="content">
          <detail-list :list="list"></detail-list>
        </div>
      </div>
    </template>
    
    <script>
    import DetailBanner from './components/Banner'
    import DetailHeader from './components/Header'
    import DetailList from './components/List'
    import axios from 'axios'
    export default {
      name: 'Datail',
      components: {
        DetailBanner,
        DetailHeader,
        DetailList
      },
      data () {
        return {
          sightName: '',
          bannerImg: '',
          gallaryImgs: [],
          list: []
        }
      },
      mounted () {
        this.getDetailInfo ()
      },
      methods: {
        getDetailInfo () {
          axios.get('/api/detail.json',{
            params: {
              id: this.$route.params.id
            }
          }).then(this.handeGetDataSucc)
        },
        handeGetDataSucc (res) {
          res = res.data
          if (res.ret && res.data) {
            const data = res.data
            this.sightName = data.sightName
            this.bannerImg = data.bannerImg
            this.gallaryImgs = data.gallaryImgs
            this.list = data.categoryList
          }
        }
      }
    }
    </script>
    
    <style lang="stylus" scoped>
    .content{
      height 50rem
    }
    </style>

Banner.vue修改：

<template>
      <div>
        <div class="banner" @click="handleBannerClick">
          <img class="banner-img" :src="bannerImg">
          <div class="banner-info">
            <div class="banner-title">
              {
       {this.sightName}}
            </div>
            <div class="banner-num">
              <i class="iconfont banner-icon"></i>
              {
       {this.bannerImgs.length}}
            </div>
          </div>
        </div>
        <common-gallary 
          :imgs="bannerImgs" 
          v-show="showGallary"
          @close="handleGallaryClose"
        ></common-gallary>
      </div>
    </template>
    
    <script>
    import CommonGallary from 'common/gallary/Gallary'
    export default {
      name: 'DatailBanner',
      components: {
        CommonGallary
      },
      props: {
        sightName: String,
        bannerImg: String,
        bannerImgs: Array
      },
      data () {
        return {
          showGallary: false,
        }
      },
      methods: {
        handleBannerClick () {
          this.showGallary = true;
        },
        handleGallaryClose () {
          this.showGallary = false;
        }
      }
    }
    </script>
    
    <style lang="stylus" scoped>
      .banner
        overflow hidden
        position relative
        height 0
        padding-bottom 55%
        .banner-img
          width 100%
        .banner-info
          display flex
          position absolute
          left 0
          right 0
          bottom 0
          line-height .6rem
          color #ffffff
          background-image linear-gradient(top, rgba(0, 0, 0, 0), rgba(0, 0, 0, .8))
          .banner-title
            flex 1
            font-size .28rem
            padding 0 .2rem
          .banner-num
            height .32rem
            line-height .32rem
            margin-top .14rem
            padding 0 .4rem
            border-radius .2rem
            background rgba(0, 0, 0, .8)
            font-size .24rem
            .banner-icon
              font-size .24rem
              margin-right .1rem
    </style>

还有存在一个问题就是拖动在多个页面会相互影响：

在router/index.js中加入这段代码：

scrollBehavior (to, from, savedPosition) {
      return { x: 0, y: 0 }
    }

上面这段代码的作用是每次切换路由时，对应的页面的x轴，y轴都为0

总结一下，组件中name的作用：

1.  递归组件的时候可以使用name来调用自身
2.  当我们在页面上对某个页面取消缓存的时候
3.  在浏览器的vue插件中展开的组件的名字就是name

![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3dvXzkyMTExMA_size_16_color_FFFFFF_t_70 2][]

### 在项目中加入基础动画 ###

新建一个detail-animation分支，并在common/fade下新建一个Fade.vue文件

<template>
      <transition>
        <slot>
        </slot>
      </transition>
    </template>
    <script>
    export default {
      name: 'Fade'
    }
    </script>
    <style lang="stylus" scoped>
      .v-enter, .v-leave-to
        opacity 0
      .v-enter-active, .v-leave-active
        transition opacity  .5s
    </style>

然后在Banner.vue中使用（要先引用对应的组件并注册，然后就可以使用了，还有其他动画效果可以看我之前的博客：[Vue实战项目开发--Vue中的动画特效][Vue_--Vue]）：

<template>
      <div>
        <div class="banner" @click="handleBannerClick">
          <img class="banner-img" :src="bannerImg">
          <div class="banner-info">
            <div class="banner-title">
              {
       {this.sightName}}
            </div>
            <div class="banner-num">
              <i class="iconfont banner-icon"></i>
              {
       {this.bannerImgs.length}}
            </div>
          </div>
        </div>
        <fade-animation>
          <common-gallary 
            :imgs="bannerImgs" 
            v-show="showGallary"
            @close="handleGallaryClose"
          ></common-gallary>
        </fade-animation>
      </div>
    </template>
    
    <script>
    import CommonGallary from 'common/gallary/Gallary'
    import FadeAnimation from 'common/fade/FadeAnimation'
    export default {
      name: 'DatailBanner',
      components: {
        CommonGallary,
        FadeAnimation
      },
      props: {
        sightName: String,
        bannerImg: String,
        bannerImgs: Array
      },
      data () {
        return {
          showGallary: false,
        }
      },
      methods: {
        handleBannerClick () {
          this.showGallary = true;
        },
        handleGallaryClose () {
          this.showGallary = false;
        }
      }
    }
    </script>
    
    <style lang="stylus" scoped>
      .banner
        overflow hidden
        position relative
        height 0
        padding-bottom 55%
        .banner-img
          width 100%
        .banner-info
          display flex
          position absolute
          left 0
          right 0
          bottom 0
          line-height .6rem
          color #ffffff
          background-image linear-gradient(top, rgba(0, 0, 0, 0), rgba(0, 0, 0, .8))
          .banner-title
            flex 1
            font-size .28rem
            padding 0 .2rem
          .banner-num
            height .32rem
            line-height .32rem
            margin-top .14rem
            padding 0 .4rem
            border-radius .2rem
            background rgba(0, 0, 0, .8)
            font-size .24rem
            .banner-icon
              font-size .24rem
              margin-right .1rem
    </style>

[20181111184744999.png]: /images/20220417/64c5d99609264f26bf3280ea6b5d0ec9.png
[watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3dvXzkyMTExMA_size_16_color_FFFFFF_t_70]: /images/20220417/8858f37bf5e24729b1fe03f2e21b7c2b.png
[2018111118535816.png]: /images/20220417/6be762abfd1d41d1a4eddb3ea8f4ecac.png
[watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3dvXzkyMTExMA_size_16_color_FFFFFF_t_70 1]: /images/20220417/bd41336d4c0545d190d050135bd9e8a1.png
[20181205222725693.png]: /images/20220417/697bf9bd3df246509eaee7e65635bef1.png
[watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3dvXzkyMTExMA_size_16_color_FFFFFF_t_70 2]: /images/20220417/977d9b4d35c34670b3724a822e816c93.png
[Vue_--Vue]: https://blog.csdn.net/wo_921110/article/details/80638167