vant 中van-list的用法说明

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

<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>

<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>

<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: 0.7rem;

padding: 0.8rem;

width: 48%;

height: 16rem;

~~float: left;~~ /**************不能有float样式*************/

margin: 1%;

border-radius: 4px;

/****************************修改前代码***************************/

p:nth-of-type(1) {

padding: 0.8rem 0;

}

p:nth-of-type(2) {

color: red;

}

.pic-item {

height: 11rem;

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)

<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>

<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>

<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: 0.7rem;

padding: 0.8rem;

height: 16rem;

border-radius: 4px;

/************************ 修改后代码************************ **/

p:nth-of-type(1) {

padding: 0.8rem 0;

}

p:nth-of-type(2) {

color: red;

}

.pic-item {

height: 11rem;

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

// 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

// 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。

以上是 vant 中van-list的用法说明 的全部内容, 来源链接: utcz.com/p/218696.html

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