【腾讯云】深入解析CloudStudio—React 快速构建点餐页面-App.js

import './App.css';
import React, { useState } from 'react'
import { NavBar, Toast, Swiper, SideBar, TabBar, Badge } from 'antd-mobile'
import {
  AppOutline,
  ExclamationShieldOutline,
  UnorderedListOutline,
  UserOutline,
} from 'antd-mobile-icons'
import BannerImg from './img/banner.png'
import HotImg from './img/hot.png'
import Food1Img from './img/food1.png'
import Food2Img from './img/food2.png'
import CartImg from './img/cart.png'
import './index.less'
import "normalize.css"

function App() {
  const [activeKey, setActiveKey] = useState('1')

  const tabbars = [    {      key: 'home',      title: '点餐',      icon: <AppOutline />,    },    {      key: 'todo',      title: '购物车',      icon: <UnorderedListOutline />,      badge: '5',    },    {      key: 'sale',      title: '餐牌预告',      icon: <ExclamationShieldOutline />,    },    {      key: '我的',      title: '我的',      icon: <UserOutline />,      badge: Badge.dot,    },  ]

  const back = () =>
    Toast.show({
      content: '欢迎进入点餐系统',
      duration: 1000,
    })


  const items = ['', '', '', ''].map((color, index) => (
    <Swiper.Item key={index}>
      <img style={{
        width: '100%'
      }} src={ BannerImg }></img>
    </Swiper.Item>
  ))

  const tabs =  [    { key: '1', title: '热销' },    { key: '2', title: '套餐' },    { key: '3', title: '米饭' },    { key: '4', title: '烧菜' },    { key: '5', title: '汤' },    { key: '6', title: '主食' },    { key: '7', title: '饮料' },  ]

  const productName = [    '小炒黄牛肉',    '芹菜肉丝炒香干',    '番茄炒鸡蛋',    '鸡汤',    '酸菜鱼',    '水煮肉片',    '土豆炒肉片',    '孜然肉片',    '宫保鸡丁',    '麻辣豆腐',    '香椿炒鸡蛋',    '豆角炒肉'  ]
  const productList = productName.map((item, key) => {
    return {
      name: item,
      img: key % 2 === 1 ? Food1Img : Food2Img
    }
  })

  return (
    <div className="App">
      <NavBar onBack={back} style={{
        background: '#F0F0F0',
        fontWeight: 'bold'
      }}>点餐</NavBar>

      <div className='head-card'>
        <Swiper
          style={{
            '--border-radius': '8px',
          }}
          autoplay
          defaultIndex={1}
        >
          {items}
        </Swiper>
      </div>

      <div className='product-box'>
        <SideBar activeKey={activeKey} onChange={setActiveKey}>
          {tabs.map(item => (
            <SideBar.Item key={item.key} title={
              item.key === '1' ? <div>
              <div className='flex-center'>
                <img style={{
                  display: 'block',
                  width: '16px',
                  marginRight: '5px'
                }} src={ HotImg }></img>
                <div>{ item.title }</div>
              </div>
            </div> : item.title
            } />
          ))}
        </SideBar>
        <div className='product-right'>
          <div className='product-title'>热销</div>
          <div className='product-list'>
            {
              productList.map((item, key) => {
                return (
                  <div className='product-item'>
                    <div className='product-item-left'>
                      <img style={{
                        display: 'block',
                        width: '76px',
                        marginRight: '5px'
                      }} src={ item.img }></img>
                      <div className='product-item-left-info'>
                        <div>
                          <div className='product-item-left-info-name'>{ item.name }</div>
                          <div className='product-item-left-info-number'>月售{key + 1}0 赞{key * 5}</div>
                        </div>
                        <div className='product-item-left-info-price'>¥10</div>
                      </div>
                    </div>
                    <div className="cart">
                      <img style={{
                        display: 'block',
                        width: '30px',
                        marginRight: '5px'
                      }} src={ CartImg } onClick = { () =>
                        Toast.show({
                          content: '添加购物车成功'
                        }) }></img>
                    </div>
                  </div>
                )
              })
            }
          </div>
        </div>
      </div>

      <TabBar>
        {tabbars.map(item => (
          <TabBar.Item
            key={item.key}
            icon={item.icon}
            title={item.title}
            badge={item.badge}
          />
        ))}
      </TabBar>
    </div>
  );
}

export default App;
在 src 目录下，创建一个 index.less 文件，将以下 less 相关的代码复制到该文件中即可。

.head-card {
  padding: 10px 20px;
  box-sizing: border-box;
}

.flex-center {
  display: flex;
  align-items: center;
}

.product-box {
  display: flex;
  align-items: center;
  width: 100%;
  height: calc(100vh - 45px - 130px - 50px);
}

.product-right {
  flex: 1;
  height: 100%;
}

.product-title {
  font-family: PingFangSC-Regular;
  font-size: 14px;
  color: #000000;
  text-align: left;
  padding-bottom: 10px;
}

.product-list {
  height: calc(100% - 24px);
  overflow-y: auto;
}

.product-item {
  position: relative;
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-left: 10px;
  box-sizing: border-box;
  margin-bottom: 10px;
  &-left {
    display: flex;
    &-info {
      padding-left: 3px;
      box-sizing: border-box;
      display: flex;
      flex-direction: column;
      justify-content: space-between;
      &-name {
        font-family: PingFangSC-Regular;
        font-size: 14px;
        color: #000000;
        text-align: left;
      }
      &-number {
        padding-top: 3px;
        font-family: PingFangSC-Regular;
        font-size: 11px;
        color: #787878;
        text-align: left;
      }
      &-price {
        font-family: PingFangSC-Regular;
        font-size: 18px;
        color: #FF1800;
        text-align: left;
      }
    }
  }
}

.cart {
  position: absolute;
  right: 10px;
  bottom: 0;
}