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HomeWeb Front-endJS TutorialPure JS implements backgammon game compatible with all browsers (source code attached)_javascript skills

Pure JS backgammon (compatible with all browsers)
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Pure JS implements backgammon game compatible with all browsers (source code attached)_javascript skills
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五子棋




<script> <BR>$(document).ready(function() { <BR>fiveChess.init(); <BR>}); <BR>var fiveChess = { <BR>NO_CHESS: 0, <BR>BLACK_CHESS: -1, <BR>WHITE_CHESS: 1, <BR>chessArr: [], //Record chess pieces<BR>chessBoardHtml: "" , <BR>humanPlayer: "black",//Player chess color<BR>AIPlayer: "white",//AI chess color<BR>isPlayerTurn: true, //It's the player's turn to play chess<BR>totalGames: cookieHandle. getCookie("totalGames") || 0,//Total number of games<BR>winGames: cookieHandle.getCookie("winGames") || 0,//Number of games won by the player<BR>isGameStart: false,//The game has started<BR>isGameOver: false, //The game is over<BR>playerLastChess: [], //The player’s last move<BR>AILastChess: [], //The AI’s last move<BR>init: function () { <BR> this.chessBoardHtml = $("div.chessboard").html(); <BR>var _fiveChess = this; <BR>//Right operating button<BR>$(".operating-panel a").click( function (event) { <BR>event.preventDefault(); <BR>var id = $(this).attr("id"); <BR>if (_fiveChess.isGameStart && id !== "replay_btn" ) { return; }//In game and not operating <BR>switch (id) { <BR>case "black_btn": <BR>_fiveChess.humanPlayer = "black"; <BR>_fiveChess.AIPlayer = "white"; <BR> break; <BR>case "white_btn": <BR>_fiveChess.humanPlayer = "white"; <BR>_fiveChess.AIPlayer = "black"; <BR>break; <BR>case "first_move_btn": <BR>_fiveChess. isPlayerTurn = true; <BR>break; <BR>case "second_move_btn": <BR>_fiveChess.isPlayerTurn = false; >if (_fiveChess.isGameStart) {//Click to replay<BR>_fiveChess.gameOver(); <BR>} <BR>else { //Click to start<BR>_fiveChess.gameStart(); <BR>} <BR>break; <BR>} <BR>if (id !== "replay_btn") { <BR>$(this).addClass("selected").siblings().removeClass("selected"); <BR> } <BR>}); <BR>this.resetChessBoard(); <BR>$("#result_info").html("Win rate:" (this.winGames * 100 / this.totalGames | 0) "%") ; <BR>}, <BR>//Reset the chessboard<BR>resetChessBoard: function () { <BR>$("div.chessboard").html(this.chessBoardHtml); <BR>$("#result_tips ").html(""); <BR>this.isGameOver = false; <BR>this.isPlayerTurn = $("#first_move_btn").hasClass("selected"); <BR>//Initialize the chess piece state<BR>var i, j; <BR>for (i = 0; i < 15; i ) { <BR>this.chessArr[i] = []; <BR>for (j = 0; j < 15; j ) { <BR>this.chessArr[i][j] = this.NO_CHESS; <BR>} <BR>} <BR>//player chess event<BR>var _fiveChess = this; <BR>$( "div.chessboard div").click(function () { <BR>if (!_fiveChess.isPlayerTurn || _fiveChess.isGameOver) { <BR>return; <BR>} <BR>if (!_fiveChess.isGameStart) { <BR>_fiveChess.gameStart(); <BR>} <BR>var index = $(this).index(), <BR>i = index / 15 | 0, <BR>j = index % 15; <BR>if (_fiveChess.chessArr[i][j] === _fiveChess.NO_CHESS) { <BR>_fiveChess.playChess(i, j, _fiveChess.humanPlayer); <BR>if (i === 0 && j == = 0) { <BR>$(this).removeClass("hover-up-left"); <BR>} <BR>else if (i === 0 && j === 14) { <BR>$ (this).removeClass("hover-up-right"); <BR>} <BR>else if (i === 14 && j === 0) { <BR>$(this).removeClass("hover -down-left"); <BR>} <BR>else if (i === 14 && j === 14) { <BR>$(this).removeClass("hover-down-right"); <BR>} <BR>else if (i === 0) { <BR>$(this).removeClass("hover-up"); <BR>} <BR>else if (i === 14) { <BR>$(this).removeClass("hover-down"); <BR>} <BR>else if (j === 0) { <BR>$(this).removeClass("hover-left") ; <BR>} <BR>else if (j === 14) { <BR>$(this).removeClass("hover-right"); <BR>} <BR>else { <BR>$(this ).removeClass("hover"); <BR>} <BR>_fiveChess.playerLastChess = [i, j]; <BR>_fiveChess.playerWinOrNot(i, j); <BR>} <BR>}); <BR>//The effect of mouse movement on the chessboard <BR>$("div.chessboard div").hover( <BR>function () { <BR>if (!_fiveChess.isPlayerTurn || _fiveChess.isGameOver) { return; } <BR>var index = $(this).index(), <BR>i = index / 15 | 0, <BR>j = index % 15; <BR>if (_fiveChess.chessArr[i][j] = == _fiveChess.NO_CHESS) { <BR>if (i === 0 && j === 0) { <BR>$(this).addClass("hover-up-left"); <BR>} <BR>else if (i === 0 && j === 14) { <BR>$(this).addClass("hover-up-right"); <BR>} <BR>else if (i === 14 && j === 0) { <BR>$(this).addClass("hover-down-left"); <BR>} <BR>else if (i === 14 && j === 14) { <BR>$(this).addClass("hover-down-right"); <BR>} <BR>else if (i === 0) { <BR>$(this).addClass("hover- up"); <BR>} <BR>else if (i === 14) { <BR>$(this).addClass("hover-down"); <BR>} <BR>else if (j = == 0) { <BR>$(this).addClass("hover-left"); <BR>} <BR>else if (j === 14) { <BR>$(this).addClass(" hover-right"); <BR>} <BR>else { <BR>$(this).addClass("hover"); <BR>} <BR>} <BR>}, <BR>function () { <BR>if (!_fiveChess.isPlayerTurn || _fiveChess.isGameOver) { return; } <BR>var index = $(this).index(), <BR>i = index / 15 | 0, <BR>j = index % 15; <BR>if (i === 0 && j === 0) { <BR>$(this).removeClass("hover-up-left"); <BR>} <BR>else if (i === 0 && j === 14) { <BR>$(this).removeClass("hover-up-right"); <BR>} <BR>else if (i === 14 && j === 0) { <BR>$(this).removeClass("hover-down-left"); <BR>} <BR>else if (i === 14 && j === 14) { <BR>$(this).removeClass("hover-down-right"); <BR>} <BR>else if (i === 0) { <BR>$(this).removeClass("hover-up") ; <BR>} <BR>else if (i === 14) { <BR>$(this).removeClass("hover-down"); <BR>}<BR>else if (j === 0) { <BR>$(this).removeClass("hover-left"); <BR>} <BR>else if (j === 14) { <BR>$(this).removeClass("hover-right"); <BR>} <BR>else { <BR>$(this).removeClass("hover"); <BR>} <BR>} <BR>); <BR>}, <BR>gameStart: function () { <BR>this.totalGames ; <BR>cookieHandle.setCookie({ name: "totalGames", value: this.totalGames, expiresHours: 365 * 24 }); <BR>//AI先手 <BR>if (!this.isPlayerTurn) { <BR>this.AImoveChess(); <BR>} <BR>this.isGameStart = true; <BR>$(".operating-panel p a").addClass("disable"); <BR>$("#replay_btn").html("重玩"); <BR>}, <BR>gameOver: function () { <BR>this.isGameStart = false; <BR>$(".operating-panel a").removeClass("disable"); <BR>$("#replay_btn").html("开始"); <BR>$("#result_info").html("胜率:" (this.winGames * 100 / this.totalGames | 0) "%"); <BR>}, <BR>//下棋 i行,j列,color颜色 <BR>playChess: function (i, j, color) { <BR>this.chessArr[i][j] = color === "black" ? this.BLACK_CHESS : this.WHITE_CHESS; <BR>if (color === this.AIPlayer) { <BR>$("div.chessboard div." color "-last").addClass(color).removeClass(color "-last"); <BR>$("div.chessboard div:eq(" (i * 15 j) ")").addClass(color "-last"); <BR>} <BR>else { <BR>$("div.chessboard div:eq(" (i * 15 j) ")").addClass(color); <BR>} <BR>}, <BR>//玩家是否取胜 <BR>playerWinOrNot: function (i, j) { <BR>var nums = 1, //连续棋子个数 <BR>chessColor = this.humanPlayer === "black" ? this.BLACK_CHESS : this.WHITE_CHESS, <BR>m, n; <BR>//x方向 <BR>for (m = j - 1; m >= 0; m--) { <BR>if (this.chessArr[i][m] === chessColor) { <BR>nums ; <BR>} <BR>else { <BR>break; <BR>} <BR>} <BR>for (m = j 1; m < 15; m ) { <BR>if (this.chessArr[i][m] === chessColor) { <BR>nums ; <BR>} <BR>else { <BR>break; <BR>} <BR>} <BR>if (nums >= 5) { <BR>this.playerWin(); <BR>return; <BR>} <BR>else { <BR>nums = 1; <BR>} <BR>//y方向 <BR>for (m = i - 1; m >= 0; m--) { <BR>if (this.chessArr[m][j] === chessColor) { <BR>nums ; <BR>} <BR>else { <BR>break; <BR>} <BR>} <BR>for (m = i 1; m < 15; m ) { <BR>if (this.chessArr[m][j] === chessColor) { <BR>nums ; <BR>} <BR>else { <BR>break; <BR>} <BR>} <BR>if (nums >= 5) { <BR>this.playerWin(); <BR>return; <BR>} <BR>else { <BR>nums = 1; <BR>} <BR>//左斜方向 <BR>for (m = i - 1, n = j - 1; m >= 0 && n >= 0; m--, n--) { <BR>if (this.chessArr[m][n] === chessColor) { <BR>nums ; <BR>} <BR>else { <BR>break; <BR>} <BR>} <BR>for (m = i 1, n = j 1; m < 15 && n < 15; m , n ) { <BR>if (this.chessArr[m][n] === chessColor) { <BR>nums ; <BR>} <BR>else { <BR>break; <BR>} <BR>} <BR>if (nums >= 5) { <BR>this.playerWin(); <BR>return; <BR>} <BR>else { <BR>nums = 1; <BR>} <BR>//右斜方向 <BR>for (m = i - 1, n = j 1; m >= 0 && n < 15; m--, n ) { <BR>if (this.chessArr[m][n] === chessColor) { <BR>nums ; <BR>} <BR>else { <BR>break; <BR>} <BR>} <BR>for (m = i 1, n = j - 1; m < 15 && n >= 0; m , n--) { <BR>if (this.chessArr[m][n] === chessColor) { <BR>nums ; <BR>} <BR>else { <BR>break; <BR>} <BR>} <BR>if (nums >= 5) { <BR>this.playerWin(); <BR>return; <BR>} <BR>this.AImoveChess(); <BR>}, <BR>playerWin: function () { <BR>this.winGames ; <BR>cookieHandle.setCookie({ name: "winGames", value: this.winGames, expiresHours: 365 * 24 }); <BR>this.showResult(true); <BR>this.gameOver(); <BR>}, <BR>//AI下棋 <BR>AImoveChess: function () { <BR>this.isPlayerTurn = false; <BR>var maxX = 0, <BR>maxY = 0, <BR>maxWeight = 0, <BR>i, j, tem; <BR>for (i = 14; i >= 0; i--) { <BR>for (j = 14; j >= 0; j--) { <BR>if (this.chessArr[i][j] !== this.NO_CHESS) { <BR>continue; <BR>} <BR>tem = this.computeWeight(i, j); <BR>if (tem > maxWeight) { <BR>maxWeight = tem; <BR>maxX = i; <BR>maxY = j; <BR>} <BR>} <BR>} <BR>this.playChess(maxX, maxY, this.AIPlayer); <BR>this.AILastChess = [maxX, maxY]; <BR>if ((maxWeight >= 100000 && maxWeight < 250000) || (maxWeight >= 500000)) { <BR>this.showResult(false); <BR>this.gameOver(); <BR>} <BR>else { <BR>this.isPlayerTurn = true; <BR>} <BR>}, <BR>showResult: function(isPlayerWin) { <BR>if (isPlayerWin) { <BR>$("#result_tips").html("恭喜你获胜!"); <BR>} <BR>else { <BR>$("#result_tips").html("哈哈,你输咯!"); <BR>} <BR>this.isGameOver = true; <BR>this.showWinChesses(isPlayerWin); <BR>}, <BR>//标记显示获胜棋子 <BR>showWinChesses: function (isPlayerWin) { <BR>var nums = 1, //连续棋子个数 <BR>lineChess = [],//连续棋子位置 <BR>i, <BR>j, <BR>chessColor, <BR>m, n; <BR>if (isPlayerWin) { <BR>chessColor = this.humanPlayer === "black" ? this.BLACK_CHESS : this.WHITE_CHESS; <BR>i = this.playerLastChess[0]; <BR>j = this.playerLastChess[1]; <BR>} <BR>else { <BR>chessColor = this.AIPlayer === "black" ? this.BLACK_CHESS : this.WHITE_CHESS; <BR>i = this.AILastChess[0]; <BR>j = this.AILastChess[1]; <BR>} <BR>$("div.chessboard div." this.AIPlayer "-last").addClass(this.AIPlayer).removeClass(this.AIPlayer "-last"); <BR>//x方向 <BR>lineChess[0] = [i]; <BR>lineChess[1] = [j]; <BR>for (m = j - 1; m >= 0; m--) { <BR>if (this.chessArr[i][m] === chessColor) { <BR>lineChess[0][nums] = i; <BR>lineChess[1][nums] = m; <BR>nums ; <BR>} <BR>else { <BR>break; <BR>} <BR>} <BR>for (m = j 1; m < 15; m ) { <BR>if (this.chessArr[i][m] === chessColor) { <BR>lineChess[0][nums] = i; <BR>lineChess[1][nums] = m; <BR>nums ; <BR>} <BR>else { <BR>break; <BR>} <BR>} <BR>if (nums >= 5) { <BR>for (k = nums - 1; k >= 0; k--) { <BR>this.markChess(lineChess[0][k] * 15 lineChess[1][k], isPlayerWin ? this.humanPlayer : this.AIPlayer); <BR>} <BR>return; <BR>} <BR>//y方向 <BR>nums = 1; <BR>lineChess[0] = [i]; <BR>lineChess[1] = [j]; <BR>for (m = i - 1; m >= 0; m--) { <BR>if (this.chessArr[m][j] === chessColor) { <BR>lineChess[0][nums] = m; <BR>lineChess[1][nums] = j; <BR>nums ; <BR>} <BR>else { <BR>break; <BR>} <BR>} <BR>for (m = i 1; m < 15; m ) { <BR>if (this.chessArr[m][j] === chessColor) { <BR>lineChess[0][nums] = m; <BR>lineChess[1][nums] = j; <BR>nums ; <BR>} <BR>else { <BR>break; <BR>} <BR>} <BR>if (nums >= 5) { <BR>for (k = nums - 1; k >= 0; k--) { <BR>this.markChess(lineChess[0][k] * 15 lineChess[1][k], isPlayerWin ? this.humanPlayer : this.AIPlayer); <BR>} <BR>return; <BR>} <BR>//左斜方向 <BR>nums = 1; <BR>lineChess[0] = [i]; <BR>lineChess[1] = [j]; <BR>for (m = i - 1, n = j - 1; m >= 0 && n >= 0; m--, n--) { <BR>if (this.chessArr[m][n] === chessColor) { <BR>lineChess[0][nums] = m; <BR>lineChess[1][nums] = n; <BR>nums ; <BR>} <BR>else { <BR>break; <BR>} <BR>} <BR>for (m = i 1, n = j 1; m < 15 && n < 15; m , n ) { <BR>if (this.chessArr[m][n] === chessColor) { <BR>lineChess[0][nums] = m; <BR>lineChess[1][nums] = n; <BR>nums ; <BR>} <BR>else { <BR>break; <BR>} <BR>} <BR>if (nums >= 5) { <BR>for (k = nums - 1; k >= 0; k--) { <BR>this.markChess(lineChess[0][k] * 15 lineChess[1][k], isPlayerWin ? this.humanPlayer : this.AIPlayer); <BR>} <BR>return; <BR>} <BR>//右斜方向 <BR>nums = 1; <BR>lineChess[0] = [i]; <BR>lineChess[1] = [j]; <BR>for (m = i - 1, n = j 1; m >= 0 && n < 15; m--, n ) { <BR>if (this.chessArr[m][n] === chessColor) { <BR>lineChess[0][nums] = m; <BR>lineChess[1][nums] = n; <BR>nums ; <BR>} <BR>else { <BR>break; <BR>} <BR>} <BR>for (m = i 1, n = j - 1; m < 15 && n >= 0; m , n--) { <BR>if (this.chessArr[m][n] === chessColor) { <BR>lineChess[0][nums] = m; <BR>lineChess[1][nums] = n; <BR>nums ; <BR>} <BR>else { <BR>break; <BR>} <BR>} <BR>if (nums >= 5) { <BR>for (k = nums - 1; k >= 0; k--) { <BR>this.markChess(lineChess[0][k] * 15 lineChess[1][k], isPlayerWin ? this.humanPlayer : this.AIPlayer); <BR>} <BR>} <BR>}, <BR>markChess: function (pos, color) { <BR>$("div.chessboard div:eq(" pos ")").removeClass(color).addClass(color "-last"); <BR>}, <BR>//下子到i,j X方向 结果: 多少连子 两边是否截断 <BR>putDirectX: function (i, j, chessColor) { <BR>var m, n, <BR>nums = 1, <BR>side1 = false, <BR>side2 = false; <BR>for (m = j - 1; m >= 0; m--) { <BR>if (this.chessArr[i][m] === chessColor) { <BR>nums ; <BR>} <BR>else { <BR>if (this.chessArr[i][m] === this.NO_CHESS) { <BR>side1 = true; <BR>} <BR>break; <BR>} <BR>} <BR>for (m = j 1; m < 15; m ) { <BR>if (this.chessArr[i][m] === chessColor) { <BR>nums ; <BR>} <BR>else { <BR>if (this.chessArr[i][m] === this.NO_CHESS) { <BR>side2 = true; <BR>} <BR>break; <BR>} <BR>} <BR>return {"nums": nums, "side1": side1, "side2": side2}; <BR>}, <BR>//下子到i,j Y方向 结果 <BR>putDirectY: function (i, j, chessColor) { <BR>var m, n, <BR>nums = 1, <BR>side1 = false, <BR>side2 = false; <BR>for (m = i - 1; m >= 0; m--) { <BR>if (this.chessArr[m][j] === chessColor) { <BR>nums ; <BR>} <BR>else { <BR>if (this.chessArr[m][j] === this.NO_CHESS) { <BR>side1 = true; <BR>} <BR>break; <BR>} <BR>} <BR>for (m = i 1; m < 15; m ) { <BR>if (this.chessArr[m][j] === chessColor) { <BR>nums ; <BR>} <BR>else { <BR>if (this.chessArr[m][j] === this.NO_CHESS) { <BR>side2 = true; <BR>} <BR>break; <BR>} <BR>} <BR>return {"nums": nums, "side1": side1, "side2": side2}; <BR>}, <BR>//下子到i,j XY方向 结果 <BR>putDirectXY: function (i, j, chessColor) { <BR>var m, n, <BR>nums = 1, <BR>side1 = false, <BR>side2 = false; <BR>for (m = i - 1, n = j - 1; m >= 0 && n >= 0; m--, n--) { <BR>if (this.chessArr[m][n] === chessColor) { <BR>nums++; <BR>} <BR>else { <BR>if (this.chessArr[m][n] === this.NO_CHESS) { <BR>side1 = true; <BR>} <BR>break; <BR>} <BR>} <BR>for (m = i + 1, n = j + 1; m < 15 && n < 15; m++, n++) { <BR>if (this.chessArr[m][n] === chessColor) { <BR>nums++; <BR>} <BR>else { <BR>if (this.chessArr[m][n] === this.NO_CHESS) { <BR>side2 = true; <BR>} <BR>break; <BR>} <BR>} <BR>return {"nums": nums, "side1": side1, "side2": side2}; <BR>}, <BR>putDirectYX: function (i, j, chessColor) { <BR>var m, n, <BR>nums = 1, <BR>side1 = false, <BR>side2 = false; <BR>for (m = i - 1, n = j + 1; m >= 0 && n < 15; m--, n++) { <BR>if (this.chessArr[m][n] === chessColor) { <BR>nums++; <BR>} <BR>else { <BR>if (this.chessArr[m][n] === this.NO_CHESS) { <BR>side1 = true; <BR>} <BR>break; <BR>} <BR>} <BR>for (m = i + 1, n = j - 1; m < 15 && n >= 0; m++, n--) { <BR>if (this.chessArr[m][n] === chessColor) { <BR>nums++; <BR>} <BR>else { <BR>if (this.chessArr[m][n] === this.NO_CHESS) { <BR>side2 = true; <BR>} <BR>break; <BR>} <BR>} <BR>return {"nums": nums, "side1": side1, "side2": side2}; <BR>}, <BR>//计算下子至i,j的权重 <BR>computeWeight: function (i, j) { <BR>var weight = 14 - (Math.abs(i - 7) + Math.abs(j - 7)), //基于棋盘位置权重 <BR>pointInfo = {},//某点下子后连子信息 <BR>chessColor = this.AIPlayer === "black" ? this.BLACK_CHESS : this.WHITE_CHESS; <BR>//x方向 <BR>pointInfo = this.putDirectX(i, j, chessColor); <BR>weight += this.weightStatus(pointInfo.nums, pointInfo.side1, pointInfo.side2, true);//AI下子权重 <BR>pointInfo = this.putDirectX(i, j, -chessColor); <BR>weight += this.weightStatus(pointInfo.nums, pointInfo.side1, pointInfo.side2, false);//player下子权重 <BR>//y方向 <BR>pointInfo = this.putDirectY(i, j, chessColor); <BR>weight += this.weightStatus(pointInfo.nums, pointInfo.side1, pointInfo.side2, true);//AI下子权重 <BR>pointInfo = this.putDirectY(i, j, -chessColor); <BR>weight += this.weightStatus(pointInfo.nums, pointInfo.side1, pointInfo.side2, false);//player下子权重 <BR>//左斜方向 <BR>pointInfo = this.putDirectXY(i, j, chessColor); <BR>weight += this.weightStatus(pointInfo.nums, pointInfo.side1, pointInfo.side2, true);//AI下子权重 <BR>pointInfo = this.putDirectXY(i, j, -chessColor); <BR>weight += this.weightStatus(pointInfo.nums, pointInfo.side1, pointInfo.side2, false);//player下子权重 <BR>//右斜方向 <BR>pointInfo = this.putDirectYX(i, j, chessColor); <BR>weight += this.weightStatus(pointInfo.nums, pointInfo.side1, pointInfo.side2, true);//AI下子权重 <BR>pointInfo = this.putDirectYX(i, j, -chessColor); <BR>weight += this.weightStatus(pointInfo.nums, pointInfo.side1, pointInfo.side2, false);//player下子权重 <BR>return weight; <BR>}, <BR>//权重方案 独:两边为空可下子,单:一边为空 <BR>weightStatus: function (nums, side1, side2, isAI) { <BR>var weight = 0; <BR>switch (nums) { <BR>case 1: <BR>if (side1 && side2) { <BR>weight = isAI ? 15 : 10;//独一 <BR>} <BR>break; <BR>case 2: <BR>if (side1 && side2) { <BR>weight = isAI ? 100 : 50;//独二 <BR>} <BR>else if (side1 || side2) { <BR>weight = isAI ? 10 : 5;//单二 <BR>} <BR>break; <BR>case 3: <BR>if (side1 && side2) { <BR>weight = isAI ? 500 : 200;//独三 <BR>} <BR>else if (side1 || side2) { <BR>weight = isAI ? 30 : 20;//单三 <BR>} <BR>break; <BR>case 4: <BR>if (side1 && side2) { <BR>weight = isAI ? 5000 : 2000;//独四 <BR>} <BR>else if (side1 || side2) { <BR>weight = isAI ? 400 : 100;//单四 <BR>} <BR>break; <BR>case 5: <BR>weight = isAI ? 100000 : 10000;//五 <BR>break; <BR>default: <BR>weight = isAI ? 500000 : 250000; <BR>break; <BR>} <BR>return weight; <BR>} <BR>}; <BR></script>























































































































































































































































黑子
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先手
后手


开始

胜率:100%






Pure JS implements backgammon game compatible with all browsers (source code attached)_javascript skills
Pure JS implements backgammon game compatible with all browsers (source code attached)_javascript skills
Pure JS implements backgammon game compatible with all browsers (source code attached)_javascript skills
Pure JS implements backgammon game compatible with all browsers (source code attached)_javascript skills
Pure JS implements backgammon game compatible with all browsers (source code attached)_javascript skills
Pure JS implements backgammon game compatible with all browsers (source code attached)_javascript skills
Pure JS implements backgammon game compatible with all browsers (source code attached)_javascript skills
Pure JS implements backgammon game compatible with all browsers (source code attached)_javascript skills
Pure JS implements backgammon game compatible with all browsers (source code attached)_javascript skills
Pure JS implements backgammon game compatible with all browsers (source code attached)_javascript skills
Pure JS implements backgammon game compatible with all browsers (source code attached)_javascript skills
Pure JS implements backgammon game compatible with all browsers (source code attached)_javascript skills
Pure JS implements backgammon game compatible with all browsers (source code attached)_javascript skills




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Understanding the JavaScript Engine: Implementation DetailsUnderstanding the JavaScript Engine: Implementation DetailsApr 17, 2025 am 12:05 AM

Understanding how JavaScript engine works internally is important to developers because it helps write more efficient code and understand performance bottlenecks and optimization strategies. 1) The engine's workflow includes three stages: parsing, compiling and execution; 2) During the execution process, the engine will perform dynamic optimization, such as inline cache and hidden classes; 3) Best practices include avoiding global variables, optimizing loops, using const and lets, and avoiding excessive use of closures.

Python vs. JavaScript: The Learning Curve and Ease of UsePython vs. JavaScript: The Learning Curve and Ease of UseApr 16, 2025 am 12:12 AM

Python is more suitable for beginners, with a smooth learning curve and concise syntax; JavaScript is suitable for front-end development, with a steep learning curve and flexible syntax. 1. Python syntax is intuitive and suitable for data science and back-end development. 2. JavaScript is flexible and widely used in front-end and server-side programming.

Python vs. JavaScript: Community, Libraries, and ResourcesPython vs. JavaScript: Community, Libraries, and ResourcesApr 15, 2025 am 12:16 AM

Python and JavaScript have their own advantages and disadvantages in terms of community, libraries and resources. 1) The Python community is friendly and suitable for beginners, but the front-end development resources are not as rich as JavaScript. 2) Python is powerful in data science and machine learning libraries, while JavaScript is better in front-end development libraries and frameworks. 3) Both have rich learning resources, but Python is suitable for starting with official documents, while JavaScript is better with MDNWebDocs. The choice should be based on project needs and personal interests.

From C/C   to JavaScript: How It All WorksFrom C/C to JavaScript: How It All WorksApr 14, 2025 am 12:05 AM

The shift from C/C to JavaScript requires adapting to dynamic typing, garbage collection and asynchronous programming. 1) C/C is a statically typed language that requires manual memory management, while JavaScript is dynamically typed and garbage collection is automatically processed. 2) C/C needs to be compiled into machine code, while JavaScript is an interpreted language. 3) JavaScript introduces concepts such as closures, prototype chains and Promise, which enhances flexibility and asynchronous programming capabilities.

JavaScript Engines: Comparing ImplementationsJavaScript Engines: Comparing ImplementationsApr 13, 2025 am 12:05 AM

Different JavaScript engines have different effects when parsing and executing JavaScript code, because the implementation principles and optimization strategies of each engine differ. 1. Lexical analysis: convert source code into lexical unit. 2. Grammar analysis: Generate an abstract syntax tree. 3. Optimization and compilation: Generate machine code through the JIT compiler. 4. Execute: Run the machine code. V8 engine optimizes through instant compilation and hidden class, SpiderMonkey uses a type inference system, resulting in different performance performance on the same code.

Beyond the Browser: JavaScript in the Real WorldBeyond the Browser: JavaScript in the Real WorldApr 12, 2025 am 12:06 AM

JavaScript's applications in the real world include server-side programming, mobile application development and Internet of Things control: 1. Server-side programming is realized through Node.js, suitable for high concurrent request processing. 2. Mobile application development is carried out through ReactNative and supports cross-platform deployment. 3. Used for IoT device control through Johnny-Five library, suitable for hardware interaction.

Building a Multi-Tenant SaaS Application with Next.js (Backend Integration)Building a Multi-Tenant SaaS Application with Next.js (Backend Integration)Apr 11, 2025 am 08:23 AM

I built a functional multi-tenant SaaS application (an EdTech app) with your everyday tech tool and you can do the same. First, what’s a multi-tenant SaaS application? Multi-tenant SaaS applications let you serve multiple customers from a sing

How to Build a Multi-Tenant SaaS Application with Next.js (Frontend Integration)How to Build a Multi-Tenant SaaS Application with Next.js (Frontend Integration)Apr 11, 2025 am 08:22 AM

This article demonstrates frontend integration with a backend secured by Permit, building a functional EdTech SaaS application using Next.js. The frontend fetches user permissions to control UI visibility and ensures API requests adhere to role-base

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