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React 實(shí)現(xiàn)井字棋的示例代碼

更新時(shí)間：2024年07月09日 08:34:37 作者：卡卡舅舅

本文主要介紹了React 實(shí)現(xiàn)井字棋,文中通過示例代碼介紹的非常詳細(xì),對(duì)大家的學(xué)習(xí)或者工作具有一定的參考學(xué)習(xí)價(jià)值,需要的朋友們下面隨著小編來一起學(xué)習(xí)學(xué)習(xí)吧

一、簡介

這篇文章會(huì)基于React 實(shí)現(xiàn)井字棋小游戲功能。

二、效果演示

三、技術(shù)實(shí)現(xiàn)

import {useEffect, useState} from "react";

export default (props) => {
  return <Board/>
}


const Board = () => {
  let initialState = [['', '', ''], ['', '', ''], ['', '', '']];
  const [squares, setSquares] = useState(initialState);
  const [times, setTimes] = useState(0);
  useEffect(()=>{
      // 判斷每行是否相同
      for (let i = 0; i < 3; i++) {
        if (squares[i][0] === squares[i][1] && squares[i][1] === squares[i][2] && squares[i][0] !== '') {
          alert(squares[i][0] + ' win');
          setTimes(0)
          setSquares(initialState)
          return;
        }
      }
      // 判斷每列是否相同
      for (let i = 0; i < 3; i++) {
        if (squares[0][i] === squares[1][i] && squares[1][i] === squares[2][i] && squares[0][i] !== '') {
          alert(squares[0][i] + ' win')
          setTimes(0)
          setSquares(initialState)
          return;
        }
      }
      // 判斷對(duì)角線是否相同
      if (squares[0][0] === squares[1][1] && squares[1][1] === squares[2][2] && squares[0][0] !== '') {
        alert(squares[0][0] + ' win');
        setTimes(0)
        setSquares(initialState)
        return;
      }
      if (squares[0][2] === squares[1][1] && squares[1][1] === squares[2][0] && squares[0][2] !== ''){
        alert(squares[0][2] + ' win');
        setTimes(0)
        setSquares(initialState)
        return;
      }


  },[times])
  return <div style={{width:'130px', margin: '0 auto'}}>
    <table style={{borderCollapse: 'collapse'}}>
      {squares.map((row, rowIdx) => {
        return <tr key={rowIdx}>
          {
            row.map((col, colIdx) => {
                return <td key={rowIdx + '-' + colIdx} style={{border: '1px solid #000', width: '40px', height: '40px'}}>
                  <div style={{width: '40px', height: '40px', textAlign: 'center', lineHeight:'40px'}} onClick={
                    () => {
                      const newSquares = [...squares];
                      if (newSquares[rowIdx][colIdx] !== '') {
                          return;
                      }
                      newSquares[rowIdx][colIdx] = times % 2 === 0 ? 'X' : 'O';
                      setSquares(newSquares);
                      setTimes(times + 1);

                    }
                  }>{col}</div>
                </td>
              }
            )
          }
        </tr>
      })}

    </table>
  </div>
}

1.布局

基于table實(shí)現(xiàn)，3行，3列。

2.表格元素點(diǎn)擊

更新cell內(nèi)容，更新次數(shù)。

     const newSquares = [...squares];
     if (newSquares[rowIdx][colIdx] !== '') {
         return;
     }
     newSquares[rowIdx][colIdx] = times % 2 === 0 ? 'X' : 'O';
     setSquares(newSquares);
     setTimes(times + 1);

3.判斷游戲是否結(jié)束

判斷每行，每列，斜線是否相等。

 useEffect(()=>{
      // 判斷每行是否相同
      for (let i = 0; i < 3; i++) {
        if (squares[i][0] === squares[i][1] && squares[i][1] === squares[i][2] && squares[i][0] !== '') {
          alert(squares[i][0] + ' win');
          setTimes(0)
          setSquares(initialState)
          return;
        }
      }
      // 判斷每列是否相同
      for (let i = 0; i < 3; i++) {
        if (squares[0][i] === squares[1][i] && squares[1][i] === squares[2][i] && squares[0][i] !== '') {
          alert(squares[0][i] + ' win')
          setTimes(0)
          setSquares(initialState)
          return;
        }
      }
      // 判斷對(duì)角線是否相同
      if (squares[0][0] === squares[1][1] && squares[1][1] === squares[2][2] && squares[0][0] !== '') {
        alert(squares[0][0] + ' win');
        setTimes(0)
        setSquares(initialState)
        return;
      }
      if (squares[0][2] === squares[1][1] && squares[1][1] === squares[2][0] && squares[0][2] !== ''){
        alert(squares[0][2] + ' win');
        setTimes(0)
        setSquares(initialState)
        return;
      }


  },[times])

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