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这篇文章将为大家详细讲解有关JavaScript如何实现网页版五子棋游戏，小编觉得挺实用的，因此分享给大家做个参考，希望大家阅读完这篇文章后可以有所收获。
本程序主要通过三部分实现：
1.棋盘绘制
2.鼠标交互
3.输赢判断
<!DOCTYPE html> <html> <head> <title> canvastest </title> </head> <body> <h2> canvas</h2> <canvas id="canvas"width="400"height="400"> </canvas> <script src="https://cdn.bootcdn.net/ajax/libs/jquery/3.6.0/jquery.js"></script> <script> var canv=document.getElementById("canvas"); var ctx=canv.getContext("2d"); ctx.strokeStyle="black"; var bow=0; //画出棋盘； var matrix=[ [0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0], [0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0], [0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0], [0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0], [0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0], [0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0], [0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0], [0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0], [0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0], [0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0], [0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0], [0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0], [0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0], [0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0], [0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0], [0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0], [0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0], [0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0], [0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0], ]; ctx.beginPath(); for(var i=0;i<19;i++){ ctx.moveTo(10+20*i,10); ctx.lineTo(10+i*20,370); ctx.moveTo(10,20*i+10); ctx.lineTo(370,i*20+10); } ctx.stroke(); //鼠标交互； $("#canvas").click(function(event) { console.log(event.offsetX) console.log(bow); var arcPosX,arcPosY; var mtxPosX,mtxPosY; for(var x=0;x<19;x++) { if((Math.abs(event.offsetX-(10+x*20)))<10) { arcPosX=10+x*20; mtxPosX=x; } if((Math.abs(event.offsetY-(10+x*20)))<10) { arcPosY=10+x*20; mtxPosY=x; } } if(matrix[mtxPosX][mtxPosY] == 0) { bow=!bow; ctx.beginPath(); if(bow){ ctx.fillStyle="Black"; ctx.arc(arcPosX,arcPosY,10,0,Math.PI*2,false); matrix[mtxPosX][mtxPosY]=1; } else{ ctx.fillStyle="White"; ctx.arc(arcPosX,arcPosY,10,0,Math.PI*2,false); ctx.stroke(); matrix[mtxPosX][mtxPosY]=2; } ctx.fill(); } //实现输赢判断 var winFlag=0; if(winFlag==0){ if(matrix[mtxPosX-1][mtxPosY] == matrix[mtxPosX][mtxPosY]) { if(matrix[mtxPosX-2][mtxPosY] == matrix[mtxPosX][mtxPosY]) { if(matrix[mtxPosX-3][mtxPosY] == matrix[mtxPosX][mtxPosY]) { if(matrix[mtxPosX-4][mtxPosY] == matrix[mtxPosX][mtxPosY]) { winFlag = 1; } else { if(matrix[mtxPosX+1][mtxPosY] == matrix[mtxPosX][mtxPosY]) { winFlag = 1; } else { winFlag = 0; } } } else { for(var w = 0; w < 2 ; w ++) { if(matrix[mtxPosX+w+1][mtxPosY] != matrix[mtxPosX][mtxPosY]) { winFlag = 0; break; } else { winFlag = 1; } } } } else { for(var w = 0; w < 3 ; w ++) { if(matrix[mtxPosX+w+1][mtxPosY] != matrix[mtxPosX][mtxPosY]) { winFlag = 0; break; } else { winFlag = 1; } } } } else { for(var w = 0; w < 4 ; w ++) { if(matrix[mtxPosX+w+1][mtxPosY] != matrix[mtxPosX][mtxPosY]) { winFlag = 0; break; } else { winFlag = 1; } } } if(matrix[mtxPosX][mtxPosY-1] == matrix[mtxPosX][mtxPosY]) { if(matrix[mtxPosX][mtxPosY-2] == matrix[mtxPosX][mtxPosY]) { if(matrix[mtxPosX][mtxPosY-3] == matrix[mtxPosX][mtxPosY]) { if(matrix[mtxPosX][mtxPosY-4] == matrix[mtxPosX][mtxPosY]) { winFlag = 1; } else { if(matrix[mtxPosX][mtxPosY+1] == matrix[mtxPosX][mtxPosY]) { winFlag = 1; } else { winFlag = 0; } } } else { for(var w = 0; w < 2 ; w ++) { if(matrix[mtxPosX][mtxPosY+w+1] != matrix[mtxPosX][mtxPosY]) { winFlag = 0; break; } else { winFlag = 1; } } } } else { for(var w = 0; w < 3 ; w ++) { if(matrix[mtxPosX][mtxPosY+w+1] != matrix[mtxPosX][mtxPosY]) { winFlag = 0; break; } else { winFlag = 1; } } } } else { for(var w = 0; w < 4 ; w ++) { if(matrix[mtxPosX][mtxPosY+w+1] != matrix[mtxPosX][mtxPosY]) { winFlag = 0; break; } else { winFlag = 1; } } } if(matrix[mtxPosX-1][mtxPosY-1] == matrix[mtxPosX][mtxPosY]) { if(matrix[mtxPosX-2][mtxPosY-2] == matrix[mtxPosX][mtxPosY]) { if(matrix[mtxPosX-3][mtxPosY-3] == matrix[mtxPosX][mtxPosY]) { if(matrix[mtxPosX-4][mtxPosY-4] == matrix[mtxPosX][mtxPosY]) { winFlag = 1; } else { if(matrix[mtxPosX+1][mtxPosY+1] == matrix[mtxPosX][mtxPosY]) { winFlag = 1; } else { winFlag = 0; } } } else { for(var w = 0; w < 2 ; w ++) { if(matrix[mtxPosX+w+1][mtxPosY+w+1] != matrix[mtxPosX][mtxPosY]) { winFlag = 0; break; } else { winFlag = 1; } } } } else { for(var w = 0; w < 3 ; w ++) { if(matrix[mtxPosX+w+1][mtxPosY+w+1] != matrix[mtxPosX][mtxPosY]) { winFlag = 0; break; } else { winFlag = 1; } } } } else { for(var w = 0; w < 4 ; w ++) { if(matrix[mtxPosX+w+1][mtxPosY+w+1] != matrix[mtxPosX][mtxPosY]) { winFlag = 0; break; } else { winFlag = 1; } } } if(matrix[mtxPosX-1][mtxPosY+1] == matrix[mtxPosX][mtxPosY]) { if(matrix[mtxPosX-2][mtxPosY+2] == matrix[mtxPosX][mtxPosY]) { if(matrix[mtxPosX-3][mtxPosY+3] == matrix[mtxPosX][mtxPosY]) { if(matrix[mtxPosX-4][mtxPosY+4] == matrix[mtxPosX][mtxPosY]) { winFlag = 1; } else { if(matrix[mtxPosX+1][mtxPosY-1] != matrix[mtxPosX][mtxPosY]) { winFlag = 0; } else { winFlag = 1; } } } else { for(var w = 0; w < 2 ; w ++) { if(matrix[mtxPosX+w+1][mtxPosY-w-1] != matrix[mtxPosX][mtxPosY]) { winFlag = 0; break; } else { winFlag = 1; } } } } else { for(var w = 0; w < 3 ; w ++) { if(matrix[mtxPosX+w+1][mtxPosY-w-1] != matrix[mtxPosX][mtxPosY]) { winFlag = 0; break; } else { winFlag = 1; } } } } else { for(var w = 0; w < 4 ; w ++) { if(matrix[mtxPosX+w+1][mtxPosY-w-1] != matrix[mtxPosX][mtxPosY]) { winFlag = 0; break; } else { winFlag = 1; } } } } if(winFlag ==1){ if(bow) alert("black win!"); else alert("white win!"); } }); </script> </body> </html>
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