這個需求大概是這樣子：

我做的一個聊天Demo，在搜索框搜索用戶，可以滾動到指定的用戶。然后成選中狀態。

這是目前狀態，我搜索南宮仆射 ，想要下面的用戶列表直接滾動到南宮仆射并改變CSS樣式。

查詢之后是這個子：

嗯，我的思路：

在搜索框搜索到用戶之后會返回一個用戶對象，之后會調用列表的點擊事件，改變CSS樣式及做一些聊天的邏輯。然后需要獲取到列表對應的id值，直接使用 document.getElementById(it).scrollIntoView();

具體實現：

列表：使用vue的v-for指令 ，這里的id值使用的是遍歷的索引值，外層是一個自定義滾動條組件。樣式也是使用vue指令，一個語法糖。

<GeminiScrollbar class='my-scroll-bars'> <li v-for='(item,index) in hrs' ::key='index' :@click='changeCurrentSession(item)'> <img :src='http://www.hdgsjgj.cn/bcjs/item.userface'> <el-badge :is-dot='isDot[user.username+’#’+item.username]'><p class='name'>{{item.name}}</p> </el-badge> </li> </GeminiScrollbar>

搜索框：這里使用帶提示的輸入框，

<el-autocomplete v-model='SearchHr' popper-append-to-body='false' size='small' :fetch-suggestions='querySearch' placeholder='請輸入內容' @select='handleSelect' > <el-button slot='append' icon='el-icon-search' @click='SearchCurrentSession(SearchHr)'></el-button> </el-autocomplete>

JS代碼：請求為get請求的axios封裝，hr為查詢返回的對象，hrs為所有的列表對象。

SearchCurrentSession() { this.getRequest('/chat/?name=' + this.SearchHr).then(resp => { if (resp) { this.hr = resp; this.SearchHr = ’’; this.changeCurrentSession(this.hr); let it = 0; this.hrs.forEach((item, index) => { if (item.name == this.hr.name) {it = index; } }) document.getElementById(it).scrollIntoView(); // document.getElementsByClassName('active')[0].scrollIntoView(); } });

changeCurrentSession(currentSession) { this.$store.commit(’changeCurrentSession’, currentSession) },

頁面全部代碼：

<template> <div style='display: flex;justify-content:space-between;height: 100%;width: 100%'> <div class='leftlist'> <el-menu background-color='#2e3238' router active-text-color='#67C23A' text-color='#fff' :collapse='isCollapse'> <el-menu-item index='/chat' style='padding-left: 10px;margin:10px 0px 20px 2px'> <el-tooltip effect='light' placement='right-start' popper-class='el-scrollbar'> <div slot='content'> <div style='margin-top: 5px;font-size: 13px;lineHeight:1.5;'><div>用戶名：{{user.name}}</div><div>手機號碼：{{user.phone}}</div><div>電話號碼：{{user.telephone}}</div><div>地 址：{{user.address}}</div><div>備注：{{user.remark}}</div> </div> </div> <img :src='http://www.hdgsjgj.cn/bcjs/user.userface':alt='user.name'></el-tooltip> </el-menu-item> <el-menu-item index='/chat' style='padding-left: 15px'> <i class='fa fa-weixin fa-2x'></i> </el-menu-item> <el-menu-item index='/chat' style='padding-left: 15px'> <i class='fa fa-windows fa-2x'></i> </el-menu-item> <el-menu-item index='/chat' style='padding-left: 15px'> <i class='fa fa-modx fa-2x'></i> </el-menu-item> <el-menu-item index='/chat' style='padding-left: 15px'> <i class='fa fa-share-alt fa-2x'></i> </el-menu-item> </el-menu> </div> <div id='list'> <div style='height:100%;width:100%;overflow-x: hidden'> <ul style='padding-left: 0px; overflow-x: hidden;'> <el-autocomplete v-model='SearchHr' popper-append-to-body='false' size='small' :fetch-suggestions='querySearch' placeholder='請輸入內容' @select='handleSelect' > <el-button slot='append' icon='el-icon-search' @click='SearchCurrentSession(SearchHr)'></el-button> </el-autocomplete> <GeminiScrollbar class='my-scroll-bars'> <li v-for='(item,index) in hrs' ::key='index' :@click='changeCurrentSession(item)'> <img :src='http://www.hdgsjgj.cn/bcjs/item.userface'> <el-badge :is-dot='isDot[user.username+’#’+item.username]'><p class='name'>{{item.name}}</p> </el-badge> </li> </GeminiScrollbar> </ul> </div> </div> </div></template><script> import {mapState} from ’vuex’ export default { name: ’list’, data() { return { isCollapse: true, SearchHr: ’’, hr: '', restaurants: [], user: JSON.parse(window.sessionStorage.getItem('user')) } }, computed: { ...mapState([ ’hrs’, ’isDot’, ’currentSession’ ]) }, methods: { SearchCurrentSession() { this.getRequest('/chat/?name=' + this.SearchHr).then(resp => { if (resp) { this.hr = resp; this.SearchHr = ’’; this.changeCurrentSession(this.hr); let it = 0; this.hrs.forEach((item, index) => { if (item.name == this.hr.name) {it = index; } }) document.getElementById(it).scrollIntoView(); // document.getElementsByClassName('active')[0].scrollIntoView(); } }); }, querySearch(queryString, cb) { this.restaurants = this.loadAll(); let restaurants = []; this.restaurants.forEach(value => { let {name, username} = value; let restaurant = {value: name, username: username} restaurants.push(restaurant); }); var results = queryString ? restaurants.filter(this.createFilter(queryString)) : restaurants; // 調用 callback 返回建議列表的數據 cb(results); }, createFilter(queryString) { return (SearchHr) => { return (SearchHr.value.toLowerCase().indexOf(queryString.toLowerCase()) === 0); }; }, loadAll() { return this.hrs; }, changeCurrentSession(currentSession) { this.$store.commit(’changeCurrentSession’, currentSession) }, handleSelect(item) { console.log(item); } }, mounted() { this.$store.dispatch(’initData’); } }</script><style lang='scss' scoped> .my-scroll-bars { height: 610px; } /* override gemini-scrollbar default styles */ /* vertical scrollbar track */ .gm-scrollbar.-vertical { background-color: #f0f0f0 } /* horizontal scrollbar track */ .gm-scrollbar.-horizontal { background-color: transparent; } /* scrollbar thumb */ .gm-scrollbar .thumb { background-color: rebeccapurple; } .gm-scroll-view { overflow-x: hidden; } .gm-scrollbar .thumb:hover { background-color: fuchsia; } input-with-select { margin-top: 50px; padding-top: 20px; } .el-scrollbar__wrap { width: 100%; height: 100%; overflow-x: hidden; } .el-menu-item is-active { padding-left: 10px; } .el-menu-vertical-demo { background-color: #2e3238; width: 80px; height: 100%; /*opacity:0.8;*/ } .leftlist { background-color: transparent; width: 90px; height: 700px; overflow-x: hidden; } .avatar { width: 45px; height: 45px; /*這個是圖片和文字居中對齊*/ border-radius: 5px; margin-top: 5px; } .el-scrollbar__wrap { background-color: #E4E7ED; } #el-scrollbar { background-color: #E4E7ED; } #list { background-color: #E4E7ED; width: 100%; overflow-x: hidden; li { padding: 7px 15px; border-bottom: 1px solid #E4E7ED; cursor: pointer; list-style: none; color: #505458; &:hover { background-color: rgba(0, 0, 0, 0.07); } } li.active { /*注意這個是.不是冒號:*/ background-color: rgba(0, 0, 0, 0.1); } .avatar { border-radius: 2px; width: 30px; height: 30px; vertical-align: middle; } .name { display: inline-block; margin-left: 15px; margin-top: 0px; margin-bottom: 0px; } }</style>

總結

到此這篇關于Vue列表實現滾動到指定位置樣式改變的文章就介紹到這了,更多相關Vue列表實現滾動到指定位置樣式改變內容請搜索好吧啦網以前的文章或繼續瀏覽下面的相關文章希望大家以后多多支持好吧啦網！