jquery实现井字格游戏

<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>tic-tac-toe</title>
    <script type="text/javascript" src="jquery.js"></script>
    <script type="text/javascript" src="jquery-1.7.2.js"></script>
    <script type="text/javascript" src="jquery-1.7.2.min.js"></script>
    <style>
        body{
            color:#FA6766;
            font-family:Trebuchet MS,Arial,Verdana;
            margin:20px;
            padding:0pt;
        }
        h3{
            margin:0pt;padding: 0pt;
        }
        div{float:left;}
        #table{width:100%;}
        .row{width:100%;}
        .col{width: 75px;float:left;
            height: 75px;cursor: pointer;}
        .hr{
            border: 2px solid #FA6766;
        }
        .vr{
            border: 2px solid #FA6766;
        }
        .cross{background-image: url("cross.png");}
        .round{background-image: url("round.png");}
        #log{clear:both;margin:0pt;padding:0pt;}
        .reset{cursor: pointer;display:none;text-decoration: underline;}
    </style>
    <script type="text/javascript">
        $(document).ready(function()
        {
            function game(){};
            game.num;
            game.init=function(size)
            {
                if(parseInt(size,10)<=0) return;
               // alert(size);
                this.gridSize=size;
                this.player=0;
                this.num;
                this.marker;
                this.createGrid();
                $('.col').hover(function(){$(this).css('background-color','#FBF9EA');},
                        function(){$(this).css('background-color','#FFF');});
                $('.col').click(function()
                {
                    if($(this).hasClass('cross')||$(this).hasClass('round'))return;
                    game.num++;
                    var who=(game.player==0)?"player 1":"player 2";
                    game.marker=(game.player==0)?"cross":"round";
                    $(this).addClass(game.marker);
                    var won=game.checkForWin(this);
                    if(!won&&game.num!=size*size)
                    {
                        game.player=(game.player==0)?1:0;
                        var player=(game.player==0)?"player 1":"player 2";
                        $('#log').html('waiting for '+player);
                    }
                    else if(!won&&game.num==size*size)$('#log').html('tie');
                    else
                    {
                            $('.col').unbind('click');
                            $('#log').html(who+'wins!!!');
                            $('h2').show('slow');
                    }
                });
            }
            game.checkForWin=function(current)
            {
                var size=this.gridSize;
                var row=$(current).attr('i');
                var col=$(current).attr('j');
                var hDone=true,vDone=true;
                for(var i=0;i<size;i++)
                {
                    if($('#'+(row+i)).hasClass(this.marker)!=true)
                        hDone=false;
                    if($('#'+(i+col)).hasClass(this.marker)!=true)
                        vDone=false;
                }
                if(hDone==true||vDone==true) return true;
                if(row==col||((parseInt(row)+parseInt(col))==(this.gridSize)-1))
                {
                    var ldDone=true,rdDone=true;
                    for(var i=0,j=size-1;i<size;i++,j--)
                    {
                        if($('#'+i+i).hasClass(this.marker)!=true)
                            ldDone=false;
                        if($('#'+i+j).hasClass(this.marker)!=true)
                            rdDone=false;
                    }
                    if(ldDone==true||rdDone==true) return true;
                }
                return false;
            }
            game.createGrid=function()
            {
                var size=this.gridSize;
                game.num=0;
                var str='<div id="table">';
                for(var i=0;i<size;i++)
                {
                    str+='<div class="row">';
                    for(var j=0;j<size;j++)
                    {
                        var cssClass='col';
                        if(j<size)cssClass+=" hr";
                        if(j<size)cssClass+=" vr";
                        str+='<div id="'+i+j+'" class="' +cssClass+'" i="'+i+'" j="'+j+'"></div>';
                    }
                    str+= '</div>';
                }
                $('#container').html(str);
               // alert(str);
            }
            $('#size').change(function()
            {
                game.init($(this).val());
                $('#log').html('waiting for player 1');
            });
            $('h2').click(function()
            {
                game.init($('#size').val());
                $('#log').html('waiting for player 1');
                $(this).hide('slow');
            });
            game.init(getElementsByClassName(choose));
        });
    </script>
</head>
<body>
    <div>
        <strong>grid size:</strong><select id="size">
        <option value="3" class="choose">3*3</option>
        <option value="4" class="choose">4*4</option>
        <option value="5" class="choose">5*5</option>
        <option value="6" class="choose">6*6</option>
    </select>
    </div>
    <p> </p>
    <h2 id="log">waiting for player 1</h2>
    <h2 class="reset">reset</h2>
    <p> </p>
    <div id="container"></div>

</body>
</html>