react-vant 使用

react-vant 是vantUI针对react的UI版本，可以帮助我们搭建react移动端页面

安装：npm install react-vant

list组件使用

import { List } from 'react-vant';

例子

/* eslint-disable react/no-array-index-key */
import React, { useState } from 'react'
import { PullRefresh, List, Tabs, Cell } from 'react-vant'
import './style.less'

// 模拟异步请求
async function getData(throwError?) {
return new Promise<number[]>((resolve, reject) => {
setTimeout(() => {
if (throwError) {
reject(new Error('error'))
}
resolve(Array.from({ length: 10 }, (_, i) => i))
}, 2000)
})
}

// 基础用法
const BaseDemo = () => {
const [list, setList] = useState<Array<number>>([])
const [finished, setFinished] = useState<boolean>(false)

const onLoad = async () => {
const data = await getData()
setList(v => [...v, ...data])
if (list.length >= 30) {
setFinished(true)
}
}
return (
<List finished={finished} onLoad={onLoad}>
{list.map((_, i) => (
<Cell key={i} title={i + 1} />
))}
</List>
)
}

// 错误提示
const ErrorDemo = () => {
const [list, setList] = useState<Array<number>>([])
const [finished, setFinished] = useState<boolean>(false)
const [count, setCount] = useState(0)

const onLoad = async () => {
setCount(v => v + 1)
const data = await getData(count === 1)
setList(v => [...v, ...data])
if (list.length >= 30) {
setFinished(true)
}
}

return (
<List
finished={finished}
errorText='请求失败，点击重新加载'
onLoad={onLoad}
>
{/* 若 onLoad 抛出错误，将显示错误提示，用户点击错误提示后会重新触发 onLoad 事件 */}
{list.map((_, i) => (
<Cell key={i} title={i + 1} />
))}
</List>
)
}

// 下拉刷新
const PullRefreshDemo = () => {
const [list, setList] = useState<Array<number>>([])
const [finished, setFinished] = useState<boolean>(false)

const onLoadRefresh = async (isRefresh?) => {
const data = await getData()
setList(v => {
const newList = isRefresh ? data : [...v, ...data]
if (newList.length >= 30) {
setFinished(true)
}
return newList
})
}

const onRefresh = async () => {
setFinished(false)
await onLoadRefresh(1)
}

return (
<PullRefresh onRefresh={onRefresh}>
{/* List 组件可以与 PullRefresh 组件结合使用，实现下拉刷新的效果 */}
<List finished={finished} onLoad={onLoadRefresh}>
{list.map((_, i) => (
<Cell key={i} title={i + 1} />
))}
</List>
</PullRefresh>
)
}

export default () => (
<div className='demo-list'>
<Tabs sticky>
<Tabs.TabPane title='基本用法'>
<BaseDemo />
</Tabs.TabPane>
<Tabs.TabPane title='错误提示'>
<ErrorDemo />
</Tabs.TabPane>
<Tabs.TabPane title='下拉刷新'>
<PullRefreshDemo />
</Tabs.TabPane>
</Tabs>
</div>
)