关于javascript:如何用js写一个简单的迷宫和打地鼠游戏

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最近在学 JavaScript，就用学的常识写了两个充斥童年回顾的小游戏 – 迷宫和打地鼠，当初让咱们一起来看看怎么实现吧~

这是一个不能再简略的迷宫了，游戏规则：从迷宫中走到起点就赢了；碰墙就输；从地图外走到起点算舞弊。S 为终点，E 为起点。

残缺 HTML 代码

<!DOCTYPE html>
<html lang="zh-cn">
<head>
    <title>The Amazing Mouse Maze</title>
    <meta charset="utf-8">
    <script src="maze.js" type="text/javascript"></script>
    <link rel="stylesheet" type="text/css" href="maze.css">
</head>

<body>
    <h1>The Amazing Mouse Maze</h1>
    <p>
        Move your mouse over the "S" to begin.
    </p>
    <div id="result"></div>
    <div id="wholeMaze">
        <div id="firstRow" class="wall"></div>



        <div id="middle">
            <div id="one" class="wall"></div>
            <div id="two" class="wall"></div>
            <div id="three" class="wall"></div>
            <div id="start">S</div>
            <div id="end">E</div>

        </div>

        <div id="lastRow" class="wall"></div>

    </div>

    <p class="info">The object of this game is to guide the mouse cursor through the start area and get to the end
        area.Be
        sure to avoid the walls.
    </p><br /><br />
    <div id="block"></div>
    <p class="info">Good luck!</p>
</body>

</html>

css 代码

h1,p{text-align: center;}

#wholeMaze{
    position: relative;
    top: 12px;
    height: 300px;
    width: 500px;
    margin: auto;
}
#result{
    text-align: center;
    font-size: 20px;
    height: 20px;
}
#firstRow{
    width: 100%;
    height: 50px;
    margin: 0;
}
.wall{
    border: 1px solid black ;    
    float: left;
    background-color: #EEEEEE;
}


#middle{
    margin: 0;
    width: 100%;
    height: 198px;
}
#one{
    position: relative;
    top: -1px;
    width: 148px;
    height: 148px;
    margin-right: 0;
    border-top: 1px solid #EEEEEE ;   
}
#two{
    position: relative;
    left: 50px;
    width: 100px;
    height: 145px;
    top: 41px;
    margin: 0;
    border-bottom: 1px solid #EEEEEE ;   
    z-index:2;/* 用于笼罩 */
}
#three{
    position: relative;
    left: 100px;
    top: -1px;
    width: 148px;
    height: 148px;
    border: 0 1px 1px 1px;
    margin: 0;
    border-top: 1px solid #EEEEEE ;   
}
#start{
    line-height: 30px;
    text-align: center;
    position: relative;
    float: left;
    font-weight: bold;
    font-size: 20px;
    height: 30px;
    width: 30px;
    left: -402px;
    top: 152px;
    border: 1px solid black;

    background-color:#83FF82;

}
#end{
    line-height: 30px;
    text-align: center;
    position: relative;
    float: left;
    font-weight: bold;
    font-size: 20px;
    height: 30px;
    width: 30px;
    left: 36px;
    top: 152px;
    background-color: #8784FF;
    border: solid black 1px;
}
#lastRow{
    position: relative;
    top: 37px;
    width: 100%;
    height: 48px;
    margin: 0;
    z-index: 1;
}

.info{
    position: relative;
    top: 20px;
    text-align: left;
    width: 600px;
    margin: auto;
}
#block{
    width: 100px;
    height: 25px;
    margin: auto;
    background-color: #EEEEEE;
    border: 1px solid black;
}

js 代码

var isStart = false;
var isInMap = false;
window.onload = function () {var wall = document.getElementsByClassName("wall");
    /*start */
    document.getElementById("start").addEventListener("mouseover", function () {document.getElementById("result").textContent = "";
        isStart = true;
        isInMap = true;
        for (var i = 0; i < wall.length; i++) {wall[i].style.backgroundColor = "#EEEEEE"; }

    })

    /*out of the map */
    document.getElementById("wholeMaze").addEventListener("mouseleave", function () {isInMap = false;});
    /*wall */
    for (var i = 0; i < wall.length; i++)
        wall[i].addEventListener("mouseover", function (event) {if (isStart) {
                event.target.style.backgroundColor = "#FF0000";
                document.getElementById("result").textContent = "You hit the wall, lost the game!";
                isStart = false;
            }
        });
    for (var i = 0; i < wall.length; i++)
        wall[i].addEventListener("mouseleave", function (event) {event.target.style.backgroundColor = "#EEEEEE";});
    /*end */
    document.getElementById("end").addEventListener("mouseover", function () {if (isStart) {if (isInMap) {document.getElementById("result").textContent = "Congratulation! You win the game!"; }
            else {document.getElementById("result").textContent = "Oh, my friend, please don't cheat!";
                isStart = false;
            }
        }
        isStart = false;
    });
}

js 局部的关键在于给元素增加 Listener，相当于附加个触发器，一旦事件产生如“mouseleave”(鼠标来到对应元素区域) 就调用对应的函数。另外留神面向对象编程。

这个游戏比较复杂，也比拟有意思，加上了计时和计分性能，还能够管制游戏的开始和完结并显示游戏状态。游戏完结时弹出后果。
游戏规则：打中地鼠加一分，打错扣一分，不打分不变，玩家能够挑战 30 秒内能打中多少只地鼠。(拼手速的时刻到了~)

因为代码有点长，这里小编就不附上了。详见：https://gitee.com/Hometown202…

看了代码，接下来就是体验游戏了，这里小编附上本人的游戏链接，有趣味的敌人能够体验一下~