使用html+css+js实现弹球游戏

代码如下，复制即可使用：

!doctyPE html>
    head>
        style type="text/css">
        .panel{
                posITion: relative;
                z-index: 0;
                top:0px;
                left: 400px;
                width: 300px;
                height: 500px;
        }
        .console{
                position: absolute;
                z-index: 1;
                top:0;
                left:0;
                width:100%;
                height: 40px;
                background-color: #bbb;
        }
        .message{
                position: absolute;
                z-index: 1;
                top:40px;
                left:0;
                width:100%;
                height: 460px;
                color: white;
                font-Size: 50px;
                text-align: center;
                line-height: 460px;
                background-color: #999;
        }
        .start,.score,.pause{
                position: absolute;
                z-index: 2;
                top: 0;
                width: 100px;
                height: 100%;
                font-size: large;
                color: white;
                text-align: center;
                line-height: 40px;
                background: -webkit-linear-gradient(top,#4ca8ff,yellow);
        }
        .start{
                left: 0px;
        }
        .score{
                left:100px;
                background-color: red;
        }
        .pause{
                left:200px;
        }
        .start:after,.pause:before{
                content: "";
                position: absolute;
                z-index: 2;
                top: 0;
                width: 3px;
                height: 100%;
                background: -webkit-linear-gradient(top,#666,#999);
        }
        .start:after{
                left: 97px;
        }
        .pause:before{
                left: 0px;
        }
        .start:hover,.pause:hover{
                cursor: pointer;
                background: -webkit-linear-gradient(top,#4ca8ff,red);
        }
        .panel span{
                position: absolute;
                z-index: 0;
                top:50%;
                left: 50%;
                font-size: 50px;
                color: blue;
        }
        .ball,.secondBall{
                position:absolute;
                z-index: 2;
                border-radius:50%;
                width: 20px;
                height: 20px;
        }
        .ball{
                top: 460px;
                left:140px;
                background-color: red;
        }
        .secondBall{
                top: 40px;
                left:140px;
                background-color: red;
        }
        .plate{
                position: absolute;
                top:480px;
                left: 100px;
                z-index: 2;
                width: 100px;
                height: 20px;
                background-color: #e5e5e5;
        }
        .promte{
                margin-top: 20px;
                text-align: center;
        }
        /style>
    /head>
    body>
        div id="panel" class="panel">
            div class="console">
                div id="start" class="start">
    开始/div>
                div id="score" class="score">
    0/div>
                div id="pause" class="pause">
    暂停/div>
            /div>
            div id="message" class="message">
    /div>
            div id="ball" class="ball">
    /div>
            div id="plate" class="plate">
    /div>
        /div>
        div class="PRomte">
    提示：键盘左右箭头控制滑板/div>
        script     type="text/javascript">
        (function(){
            document.onkeydown = function(e){
                    VAR e = e || window.event;
                if(e.keyCode == 37){
                        //键盘向左键                    plateMove("left");
                }
else if(e.keyCode == 39){
                        //键盘向右键                    plateMove("right");
                }
            }
        }
    )();
            var panel = document.getElementById("panel"),            message = document.getElementById("message"),            plate = document.getElementById("plate"),            ball = document.getElementById("ball"),            start = document.getElementById("start"),            score = document.getElementById("score"),            pause = document.getElementById("pause"),            secondBall;
            var startGame, x = x2 = -1, y = y2 = -1, speed = 1, positionArr = [], pauseActive = false,            //一个标志：表示难度是否还能增加            flag = true,            //球的起始位置            ballX, ballY, secondBallX, secondBallY,            //边界            minX = 0,            maxX = panel.offsetWidth - ball.offsetWidth,            minY = 40;
                maxY = panel.offsetHeight - ball.offsetHeight - plate.offsetHeight;
        window.onload = function(){
            if(window.addEventListener){
                    start.addEventListener("click",startClick,false);
                    pause.addEventListener("click",pauseClick,false);
            }
else if(window.attachEvent){
                    start.attachEvent("onclik",startClick);
                    pause.attachEvent("onclik",pauseClick);
            }
else{
                    start.onclik = startClick;
                    pause.onclik = pauseClick;
            }
        }
                function plateMove(direction){
            if(direction == "left"){
                    if(plate.offsetLeft >
 0){
                        plate.style.left = (plate.offsetLeft-30  0? 0 : plate.offsetLeft-30)+"px";
                }
            }
            if(direction == "right"){
                if(plate.offsetLeft  200){
                        plate.style.left = (plate.offsetLeft+30 >
     200? 200 : plate.offsetLeft+30)+"px";
                }
            }
        }
        function startClick(){
            if(!pauseActive){
                    resetGame();
            }
else{
                    pauseActive = !pauseActive;
            }
            startGame = setInterval(function(){
                    //console.LOG(ballX+"======"+ballY);
                    positionArr = setPosition(ballX,ballY,true);
                if(positionArr == "GAMEOVER"){
                        return;
                }
                    ballX = positionArr[0];
                    ballY = positionArr[1];
                    //设置球的位置                ball.style.left = ballX+"px";
                    ball.style.top = ballY+"px";
                if(!flag){
                        positionArr = setPosition(secondBallX,secondBallY,false);
                        secondBallX = positionArr[0];
                        secondBallY = positionArr[1];
                        secondBall.style.left = secondBallX+"px";
                        secondBall.style.top = secondBallY+"px";
                }
else{
                        addDifficulty();
                }
            }
    ,30);
        }
        function pauseClick(){
                pauseActive = true;
                clearInterval(startGame);
        }
        function resetGame(){
                clearInterval(startGame);
                message.innerHTML="";
                score.innerHTML="0";
                ball.style.left = "140px";
                ball.style.top = "460px";
                plate.style.left = "100px";
                plate.style.top = "480px";
                ballX = ball.offsetLeft;
                ballY = ball.offsetTop;
                speed = 1;
                flag = true;
            //第二个球设置隐藏            if(secondBall){
                    secondBall.style.display="none";
                    secondBall.style.left = "140px";
                    secondBall.style.top = "40px";
            }
        }
        function addDifficulty(){
                if(parseInt(score.innerHTML) >
     500 &
    &
 parseInt(score.innerHTML)  2000){
                    speed = 1.2;
            }
    else if(parseInt(score.innerHTML) >
     2000 &
    &
 parseInt(score.innerHTML)  5000){
                    speed = 1.5;
            }
    else if(parseInt(score.innerHTML) >
 5000){
                if(typeof secondBall != "undefined"){
                        secondBall.style.display="";
                }
else{
                        secondBall = document.createElement('div');
                }
                                    secondBall.classname = 'secondBall';
                    panel.appendChild(secondBall);
                    secondBallX = secondBall.offsetLeft;
                    secondBallY = secondBall.offsetTop;
                    flag = false;
            }
        }
        function setPosition(_x,_y,Firstball){
            if(_x == minX || _x == maxX){
                    //x*=-1;
                    firstball? x*=-1 : x2*=-1;
            }
            if(_y == minY || _y == maxY){
                    //y*=-1;
                    firstball? y*=-1 : y2*=-1;
            }
            if(_y == maxY){
                    //判断挡板的位置是不是在球的范围内                if(plate.offsetLeft >
 _x || (plate.offsetLeft + plate.offsetWidth)  _x){
                        clearInterval(startGame);
                        message.innerHTML="GAMEOVER";
                        return "GAMEOVER";
                }
            }
            if(firstball){
                    _x+=4*x*speed;
                    _y+=5*y*speed;
            }
else{
                    _x+=4*x2*speed;
                    _y+=5*y2*speed;
            }
                            //边界处理            _x = _x  minX? minX : _x;
                _x = _x >
     maxX? maxX : _x;
                            _y = _y  minY? minY : _y;
                _y = _y >
     maxY? maxY : _y;
                //设置分数            score.innerHTML=parseInt(score.innerHTML)+10*speed;
                return [_x,_y];
        }
        /script>
    /body>
    /html>
    

如果您有更好的方法或更多的功能，可以和我们大家一起分享哦，如有错误，欢迎联系我改正，非常感谢！！！

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