• vue中使用swiper做轮播页面,标题样式随着轮播页面改变而改变


    vue中使用swiper做轮播页面,标题样式随着轮播页面改变而改变

    知识点: 标题组件与轮播组件之间交互(vue兄弟组件之间传值)

    兄弟之间传递数据需要借助于事件车,通过事件车的方式传递数据

    1、创建一个Vue的实例,让各个兄弟共用同一个事件机制。

    2、传递数据方,通过一个事件触发bus.$emit(方法名,传递的数据)。

    3、接收数据方,通过mounted(){}触发bus.$on(方法名,function(接收数据的参数){用该组件的数据接收传递过来的数据}),此时函数中的this已经发生了改变,可以使用箭头函数。

    实例如下:

    我们可以创建一个单独的js文件eventVue.js,内容如下

    import Vue from 'vue';
     
    export default new Vue();
    

      

    整个文件这两句就够啦!!!!

    标题组件

    子组件1

    • 文件名: nav.vue
     1 <template>
     2   <div class="nav-container">
     3     <ul style="padding: 0">
     4       <li v-for="(item, index) in newBreadcrumb" 
     5       :key="index"
     6       :class="nowIndex===index ? 'selected-nav nav-title':'unselected-nav nav-title'">
     7       {{item.name}}
     8       <span class="line">/</span>
     9       </li>
    10     </ul>
    11   </div>
    12 </template>
    13 <script>
    14 import eventHub from '../../../../commonJS/eventVue.js'
    15 export default {
    16   props:['breadcrumb'],
    17   data(){
    18     return {
    19       newBreadcrumb: [],
    20       nowIndex: 0,
    21     }
    22   },
    23   created(){
    24     console.log("breadcrumb", this.breadcrumb) //父子组件传值,传过来一个标题数组
    25     //对数组进行处理,转为数组对象,给原数组成员加了key,为name
    26     for(let i in this.breadcrumb){
    27       let breadcrumbObject = {}
    28       this.$set(breadcrumbObject, 'name', this.breadcrumb[i] )
    29       this.newBreadcrumb.push(breadcrumbObject)
    30     }
    31     
    32   },
    33   mounted(){
    34     //nav组件接收swiper组件滑动时传过来的index
    35     eventHub.$on('slideTab', (index)=>{
    36       this.nowIndex = index
    37     });
    38   },
    39 }
    40 </script>
    41 <style>
    42 .nav-container {
    43   font-size: 0;
    44   padding: .2rem 0 0 .2rem;
    45 }
    46 .nav-title {
    47   font-family: "DINPro-Medium";
    48   font-size: 0.18rem;
    49 }
    50 li {
    51   display:inline-block;
    52 }
    53 .nav-title:nth-child(3) .line{
    54   display: none;
    55 }
    56 .selected-nav {
    57   color: #554344;
    58 }
    59 .unselected-nav {
    60   color: #B8B8B8;
    61 }
    62 </style>
    子组件2
    • 文件名: swiper.vue
     1 <template>
     2   <div router>
     3     <div v-for="(route, index) in $router.options.routes" :key="index">
     4           <!-- {{route.name}} -->
     5       <div v-if="route.name === 'CompetitionObjective'">
     6         <template v-for="(items, index) in route.children">
     7             <swiper
     8             :key="index"
     9             v-if="items.path === 'MRtableAssociation/'"
    10             :options="swiperOption"
    11             ref="mySwiper"
    12             >
    13             <swiper-slide
    14                 v-for="(item, index) in items.children"
    15                 :key="index"
    16                 class="mdrt-item"
    17             >
    18                 <keep-alive>
    19                 <component :is="item.component" v-bind:MDRTcompetitionCd="MDRTcompetitionCd" v-if="MDRTcompetitionCd.length>0"></component>
    20                 </keep-alive>
    21             </swiper-slide>
    22             <div class="swiper-pagination" slot="pagination"></div>
    23             </swiper>
    24         </template>
    25       </div>
    26     </div>
    27   </div>
    28 </template>
    29 <script>
    30 import eventHub from '../../../../commonJS/eventVue.js'
    31 export default {
    32   props:{
    33     MDRTcompetitionCd: {
    34       type: String,
    35       default: ""
    36     }
    37   },
    38   data(){
    39     return {
    40       swiperOption: {
    41         pagination: {
    42           el: ".swiper-pagination"
    43         },
    44       }
    45     }
    46   },
    47   mounted() {
    48       var mySwiper = this.$refs['mySwiper'][0].swiper
    49       mySwiper.on('slideChange', () => { // 监控滑动后当前页面的索引,将索引发射到导航组件
    50       // 左右滑动时将当前slide的索引发送到nav组件,eventHub是兄弟组件之间传值的桥梁
    51       eventHub.$emit('slideTab', mySwiper.activeIndex);
    52     });
    53   }
    54 }
    55 </script>
    56 <style scoped>
    57 .swiper-table {
    58   height: 3.65rem;
    59   border-top: 0.01rem solid #d8d8d8;
    60 }
    61 
    62 .swiper-table >>> .swiper-container-horizontal > .swiper-pagination-bullets {
    63   bottom: -0.2rem;
    64   left: 0;
    65    100%;
    66   z-index: 1000;
    67 }
    68 .swiper-table >>> .swiper-pagination-bullet-active {
    69   background: #d31145 !important;
    70   /*  .34rem !important; */
    71 }
    72 .mdrt-item {
    73   font-family: 'DINPro-Medium';
    74   font-size: .18rem;
    75   color: #554344 !important;
    76 } 
    77 </style>

    父组件:

    关键代码

    <v-nav :breadcrumb='breadcrumb' v-if="breadcrumb.length > 0"></v-nav>
    <v-swiper :MDRTcompetitionCd='MDRTcompetitionCd'></v-swiper>
    

      




    如有问题欢迎指正:qq: 1534147975

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  • 原文地址:https://www.cnblogs.com/sinceForever/p/12146091.html
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