使用html+css+js实现弹球游戏

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 使用html+css+js实现弹球游戏

 效果图：

 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[1HTML5与Javascript 实现网页弹球游戏


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