van-list里面的元素不能有float样式,否则会连续触发 load 事件
原代码
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< template > < div class = "about" > < van-tabs v-model = "active" sticky @ change = "getTypeDate" > < van-tab v-for = "(tab) in typeList" :title = "tab.name" :key = "tab.id" > < div :style = "{height: contentHeight}" class = "pic-content" > < van-list :finished = "finished" :finished-text = "finishedText" v-model = "loading" :offset = "10" :immediate-check = "false" @ load = "getserviceList" > <!------------------------------------------------- 修改前代码 ---------------------------------------------> /*< div class = "pic-box" v-for = "(serve) in serviceList" :key = "serve.id" @ click = "router(serve)" > < div class = "pic-item" > < img v-if = "serve.picturePath" :src = "$BASE_PICTUREPATH_URL + serve.picturePath.split(',')[0]" > </ div > < p >{{serve.name}}</ p > < p class = "price-red" >¥{{serve.price}}</ p > </ div >*/ <!------------------------------------------------- 修改前代码 ---------------------------------------------> </ van-list > </ div > </ van-tab > </ van-tabs > </ div > </ template > |
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<script> import { Tab, Tabs, List, Cell, Row, Col } from "vant" ; import { FetchServeType, FetchServeList } from "../apis/serve.js" ; export default { data() { return { active: 0, typeList: [], serviceList: [], type: "" , finishedText: "" , finished: false , pageNum: 1, pageSize: 10, contentHeight: 0, loading: false }; }, mounted() { this .getOrderStyle(); this .contentHeight = document.documentElement.clientHeight - 66 - 40 + "px" ; }, methods: { async getOrderStyle() { let res = await FetchServeType(); if (res.data && res.data.success) { this .typeList = res.data.data; this .type = res.data.data[0].name; this .getTypeDate(); } }, getTypeDate() { this .pageNum = 1; this .type = this .typeList[ this .active].name; this .serviceList = []; this .finishedText = "" ; this .finished = false ; this .getserviceList(); }, async getserviceList() { let toast = this .$toast.loading({ mask: true , message: "加载中..." }); const { type, pageNum, pageSize } = this ; let params = { type, pageNum, pageSize }; let res = await FetchServeList(params); this .loading = false ; toast.close(); if (res.data && res.data.success) { let list = (res.data.data && res.data.data.list) || []; if (pageNum > 1) { this .serviceList = [... this .serviceList, ...list]; } else { this .serviceList = list; } // 如果当前页数 = 总页数,则已经没有数据 if (res.data.data.pageNum === res.data.data.pages) { this .finished = true ; this .finishedText = "- 没有更多了-" ; } // 如果总页数大于当前页码,页码+1 if (res.data.data.pages > pageNum) { this .pageNum++; } } console.log( "FetchServeList: " , this .serviceList); } } }; </script> |
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<style lang= "scss" scoped> .pic-content { overflow-y: scroll ; -webkit-overflow-scrolling: touch; .pic-box { /****************************修改前代码***************************/ background-color : #fff ; overflow : hidden ; break-inside: avoid ; box-sizing: border-box; margin-bottom : 0.7 rem; padding : 0.8 rem; width : 48% ; height : 16 rem; ~~ float : left ;~~ /**************不能有float样式*************/ margin : 1% ; border-radius: 4px ; /****************************修改前代码***************************/ p:nth-of-type( 1 ) { padding : 0.8 rem 0 ; } p:nth-of-type( 2 ) { color : red ; } .pic-item { height : 11 rem; flex- direction : column; justify- content : center ; overflow : hidden ; img { width : 100% ; height : auto ; border-radius: 4px ; } } } } </style> |
// 修改后代码(注释部分为修改后代码)
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< template > < div class = "about" > < van-tabs v-model = "active" sticky @ change = "getTypeDate" > < van-tab v-for = "(tab) in typeList" :title = "tab.name" :key = "tab.id" > < div :style = "{height: contentHeight}" class = "pic-content" > < van-list :finished = "finished" :finished-text = "finishedText" v-model = "loading" :offset = "10" :immediate-check = "false" @ load = "getserviceList" > <!------------------- 修改后代码 --------------------> /*< van-row > < van-col span = "12" class = "pic-box" v-for = "(serve) in serviceList" :key = "serve.id" @ click = "router(serve)" > < div class = "pic-item" > < img v-if = "serve.picturePath" :src = "$BASE_PICTUREPATH_URL + serve.picturePath.split(',')[0]" > </ div > < p >{{serve.name}}</ p > < p class = "price-red" >¥{{serve.price}}</ p > </ van-col > </ van-row >*/ <!------------------- 修改后代码 --------------------> </ van-list > </ div > </ van-tab > </ van-tabs > </ div > </ template > |
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<script> import { Tab, Tabs, List, Cell, Row, Col } from "vant" ; import { FetchServeType, FetchServeList } from "../apis/serve.js" ; export default { data() { return { active: 0, typeList: [], serviceList: [], type: "" , finishedText: "" , finished: false , pageNum: 1, pageSize: 10, contentHeight: 0, loading: false }; }, mounted() { this .getOrderStyle(); this .contentHeight = document.documentElement.clientHeight - 66 - 40 + "px" ; }, methods: { async getOrderStyle() { let res = await FetchServeType(); if (res.data && res.data.success) { this .typeList = res.data.data; this .type = res.data.data[0].name; this .getTypeDate(); } }, getTypeDate() { this .pageNum = 1; this .type = this .typeList[ this .active].name; this .serviceList = []; this .finishedText = "" ; this .finished = false ; this .getserviceList(); }, async getserviceList() { let toast = this .$toast.loading({ mask: true , message: "加载中..." }); const { type, pageNum, pageSize } = this ; let params = { type, pageNum, pageSize }; let res = await FetchServeList(params); this .loading = false ; toast.close(); if (res.data && res.data.success) { let list = (res.data.data && res.data.data.list) || []; if (pageNum > 1) { this .serviceList = [... this .serviceList, ...list]; } else { this .serviceList = list; } // 如果当前页数 = 总页数,则已经没有数据 if (res.data.data.pageNum === res.data.data.pages) { this .finished = true ; this .finishedText = "- 没有更多了-" ; } // 如果总页数大于当前页码,页码+1 if (res.data.data.pages > pageNum) { this .pageNum++; } } console.log( "FetchServeList: " , this .serviceList); } } }; </script> |
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<style lang= "scss" scoped> .pic-content { overflow-y: scroll ; -webkit-overflow-scrolling: touch; .pic-box { /************************ 修改后代码**************************/ background-color : #fff ; overflow : hidden ; box-sizing: border-box; margin-bottom : 0.7 rem; padding : 0.8 rem; height : 16 rem; border-radius: 4px ; /************************ 修改后代码************************ **/ p:nth-of-type( 1 ) { padding : 0.8 rem 0 ; } p:nth-of-type( 2 ) { color : red ; } .pic-item { height : 11 rem; flex- direction : column; justify- content : center ; overflow : hidden ; img { width : 100% ; height : auto ; border-radius: 4px ; } } } } </style> |
补充知识:vant里 List 组件可以与 PullRefresh 组件结合使用的一个小提示与小坑坑
小提示
List 组件可以与 PullRefresh 组件结合使用,可以实现列表下拉刷新的效果,但是当下拉刷新后更新的数据展示在页面上不能撑满 List 列表中的内容的时候,他并不会主动触发列表刷新,以至于来填满列表。
可以给list组件添加ref属性,然后在下拉刷新后,在下拉刷新的事件里手动调用this.$refs.listRef(你的list的ref名称).check()来触发列表加载后续的数据
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// list组件 <van-list v-model= "loading" ref= "listRef" // 1. 绑定ref :finished= "finished" finished-text= "没有更多了" :error.sync= "error" error-text= "请求失败,点击重新加载" @load= "onLoad" > // 下拉刷新的事件 onRefresh() { ...刷新成功后 // 2.手动去让下拉刷新后,去执行list列表的load事件 this .$refs.listRef.check() } |
小坑坑
如果你把List 组件可以与 PullRefresh 组件结合使用封装成一个组件,然后在父组件中使用的时候,需要给封装的这个组件传list组件的v-model的值来控制list是否处于加载状态。
然后在父组件传 v-moel=“loading” 或者 :is-loading.sync=“loading” 传给子组件让他来控制子组件的list的v-model的控制load加载状态,按理说v-model 默认是 value 属性和 input 事件的组合,但是list组件的文件默认修改了,把传过去的value用 model: { prop: ‘loading' }修改了,所以我们在子组件接收的时候不能用value 要用loading
此图为vant的源码
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// 父组件 给子组件传list的v-model的值 :is-loading.sync= "loading" // 或写成 v-model= "loading" // 子组件 list组件 // 子组件不能用value接收 // :value="isLoading" // 应该写成loading :loading= "isLoading" |
以上这篇vant 中van-list的用法说明就是小编分享给大家的全部内容了,希望能给大家一个参考,也希望大家多多支持服务器之家。
原文链接:https://blog.csdn.net/ddengjiayao/article/details/94027270