基于React.js实现兔兔牌九宫格翻牌抽奖组件

目录

• 基础页面结构
• 初始化数据
• 翻转逻辑
• count 为 0
• 100% 中奖
• 效果图

基础页面结构

import React, { useEffect, useState } from "react"
import './index.css'

const FlopLuckyDraw9 = () => {

  return (
    <>
      

        可抽奖
        {count}
        次
      
      

        {
          list.map((item) => {
            return (
              

                
抽奖
                
{item.name}
              
            )
          })
        }
      
    
  )
}

export default FlopLuckyDraw9

初始化数据

import React, { useEffect, useState } from "react"
import './index.css'

const data = [
  { id: 1, name: '1元优惠券' },
  { id: 2, name: '10元优惠券', },
  { id: 3, name: '谢谢惠顾' },
  { id: 4, name: '豪华电动车' },
  { id: 5, name: '1w购物券' },
  { id: 6, name: '5w购物券' },
  { id: 7, name: '豪华轿车' },
  { id: 8, name: '房子一套' },
  { id: 9, name: '顶配笔记本' }
]

const FlopLuckyDraw9 = () => {
  const [count, setCount] = useState(3)
  const [list, setList] = useState([])

  useEffect(() => {
    setList(data.map((i) => {
      return {
        ...i,
        showName: false,
        showResult: false
      }
    }))
  }, [])

  return (
    <>
  )
}

export default FlopLuckyDraw9

翻转逻辑

点击 item 时，将 showName 变为 true，改变类名，实现翻转效果。

const FlopLuckyDraw9 = () => {

  const handleClick = (item) => {
    setList(list.map((i) => {
      if (i.id === item.id) {
        return {
          ...i,
          showName: true,
        }
      } else {
        return i
      }
    }))
  }

  return (
    <>
      

        {
          list.map((item) => {
            return (
              
 handleClick(item)} key={item.id}>
                
抽奖
                
{item.name}
              
            )
          })
        }
      
    
  )
}

export default FlopLuckyDraw9

count 为 0

当 count 为 0 时，将所有的牌全部都翻转出来，同时添加未选中的类名。

const FlopLuckyDraw9 = () => {
  const [count, setCount] = useState(3)

  useEffect(() => {
    setTimeout(() => {
      // 监听 count
      if (count === 0) {
        setList(list.map((i) => {
          if (!i.showName) {
            return {
              ...i,
              showName: true,
              showResult: true
            }
          } else {
            return {
              ...i,
              showName: true,
            }
          }
        }))
      }
    }, 1000);
  }, [count])

  const handleClick = (item) => {
    if (count === 0) {
      return;
    }
    // ....
    setCount(count => count - 1)
  }

  return (
    <>
      

        可抽奖
        {count}
        次
      
      

        {
          list.map((item) => {
            return (
              

                
{item.name}
              
            )
          })
        }
      
    
  )
}

export default FlopLuckyDraw9

100% 中奖

100% 中奖？代码是自己的，改吧改吧就可以了。

const data = [
  { id: 1, name: '1元优惠券', is: true },
  { id: 2, name: '10元优惠券', },
  { id: 3, name: '谢谢惠顾', is: true },
  { id: 4, name: '豪华电动车' },
  { id: 5, name: '1w购物券' },
  { id: 6, name: '5w购物券' },
  { id: 7, name: '豪华轿车' },
  { id: 8, name: '房子一套', is: true },
  { id: 9, name: '顶配笔记本' }
].sort(v => Math.random() - 0.5)

const FlopLuckyDraw9 = () => {
  const [winAPrize, setWinAPrize] = useState([])

  const handleClick = (item) => {
    // ...
    const winAPrizeItem = winAPrize.pop()
    setList(list.map((i) => {
      if (i.id === item.id) {
        return {
          ...i,
          showName: true,
          name: winAPrizeItem.name
        }
      } else {
        return i
      }
    }))
    // ...
  }

  useEffect(() => {
    setWinAPrize(data.filter(v => v.is))
  }, [])

  return (
    <>
  )
}

export default FlopLuckyDraw9

效果图

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