vue—顶部选项卡功能的组件封装
效果图:
页面可以左右滑动,上面选项卡主题也会跟着动
功能实现:
子组件:
<template> <view> <!-- 顶部选项卡功能 --> <view class="uni-tab-bar"> <scroll-view scroll-x="true" class="uni-swiper-tab"> <block v-for="(tab,index) in tabBars" :key="tab.id"> <view class="swiper-tab-list" :class="{'active':(tabIndex==index)}" @tap="tabtap(index)"> {{tab.name}} <!-- 分割线 --> <view class="swiper-tab-line"></view> </view> </block> </scroll-view> </view> </view> </template> <script> export default { props:{ tabBars:Array, tabIndex:Number }, methods: { // tabbar点击事件 tabtap(index){ // this.tabIndex=index; this.$emit('tabtap',index) } } } </script> <style scoped> .uni-swiper-tab{ border-bottom: 1rpx solid #EEEEEE; } .swiper-tab-list{ color: #969696; font-weight: bold; } .uni-tab-bar .active{ color: #343434; } .active .swiper-tab-line{ border-bottom: 6rpx solid #FEDE33; width: 80rpx; margin: auto; border-top: 6rpx solid #FEDE33; border-radius: 20rpx; } </style>
父组件:
<template> <view> <!-- 引入顶部选项卡组件 --> <swiper-top-tab :tabBars="tabBars" :tabIndex="tabIndex" @tabtap="tabtap"></swiper-top-tab> <view class="uni-tab-bar"> <!-- 页面滑动功能(选项卡也会跟着变化) --> <!-- swiper时进行左右滚动的,scroll-view来进行上下的滚动 --> <swiper class="swiper-box" :style="{height:(swiperheight+'px')}" :current="tabIndex" @change="tabChange"> <swiper-item v-for="(items,index) in newslist" :key="index"> <scroll-view scroll-y="true" class="list"> <!--图文、列表样式 --> <block v-for="(item,index1) in items.list" :key="index1"> <!-- 引入图文列表组件 --> <index-list :item="item" :index="index1"></index-list> </block> </scroll-view> </swiper-item> </swiper> </view> </view> </template> <script> import indexList from "../../components/index/index-list.vue"; import swiperTopTab from "../../components/index/swiper-top-tab.vue"; export default { components:{ indexList, swiperTopTab }, data() { return { // 实际应用中接收后端传来的数据 swiperheight:550, //默认页面窗口高度 tabIndex:0, //默认选中第一个 tabBars:[ {name:"关注",id:"guanzhu"}, {name:"推荐",id:"tuijian"}, {name:"体育",id:"tiyu"}, {name:"热点",id:"redian"}, {name:"财经",id:"caijing"}, {name:"娱乐",id:"yule"}, ], newslist:[ { // 关注 list:[ { userpic:"../../static/demo/userpic/12.jpg", username:"昵称", isguanzhu:false, title:"我是标题", type:"img", //img:图文 video:视频 titlepic:"../../static/demo/datapic/11.jpg", playnum:"20w", long:"2:47", //播放时长 infonum:{ index:0, //0:没有操作 1:顶 2:踩 dingnum:11, cainum:11, }, commentnum:10, sharenum:10, }, { userpic:"../../static/demo/userpic/12.jpg", username:"昵称", isguanzhu:true, title:"我是标题", type:"video", //img:图文 video:视频 titlepic:"../../static/demo/datapic/11.jpg", playnum:"20w", long:"2:47", //播放时长 infonum:{ index:1, //0:没有操作 1:顶 2:踩 dingnum:11, cainum:11, }, commentnum:10, sharenum:10, } ], }, { // 推荐 list:[ { userpic:"../../static/demo/userpic/12.jpg", username:"昵称", isguanzhu:true, title:"我是标题", type:"video", //img:图文 video:视频 titlepic:"../../static/demo/datapic/11.jpg", playnum:"20w", long:"2:47", //播放时长 infonum:{ index:1, //0:没有操作 1:顶 2:踩 dingnum:11, cainum:11, }, commentnum:10, sharenum:10, } ], }, { // 体育 list:[ { userpic:"../../static/demo/userpic/12.jpg", username:"昵称", isguanzhu:true, title:"我是标题", type:"video", //img:图文 video:视频 titlepic:"../../static/demo/datapic/11.jpg", playnum:"20w", long:"2:47", //播放时长 infonum:{ index:1, //0:没有操作 1:顶 2:踩 dingnum:11, cainum:11, }, commentnum:10, sharenum:10, } ], }, { list:[], }, ] } }, onLoad() { // 注意这里的this指向不是全局的,仅在这个方法中生效(如果使用箭头函数就不会出现这种情况) // let that = this; uni.getSystemInfo({ success: (res)=> { // 这里是为了上下滚动时候不会出现顶部选项卡内容被隐藏的问题 let height=res.windowHeight-50; //res.windowHeight获取的值单位是px this.swiperheight=height; //这里记住不能使用ES5的书写方式,而是使用箭头函数来写(否则会出现this指向问题) // console.log(res.windowHeight); // console.log(height); console.log(this.swiperheight); } }); }, methods: { // tabbar点击事件 tabtap(index){ this.tabIndex=index; }, // 页面滑动事件 tabChange(e){ // console.log(JSON.stringify(e.detail)); this.tabIndex=e.detail.current; } } } </script> <!-- uniapp在编译的时候会把子组件和父组件合并成同一个文件,一个组件的CSS可能会污染另一个组件的CSS,所以这时候需要使用scoped限制样式的作用域 --> <style scoped> </style>
一个小小后端的爬行痕迹