最近，孩子的幼儿园让家长体验“半日助教活动”，每个家长需要讲授15-20分钟的课程。作为一名程序员，实在没有能教的课程，只能做了一个小游戏，带着小朋友们熟悉数字。
效果大致是这样的。九宫格的左上角是一只小猫图片，右下角是小老鼠图片，其他7个方框都是数字。方框被点击时背景图片就会变成小猫，每次点击都相当于小猫移动了一步，直到点击老鼠，老鼠的图片被替换，相当于猫捉到老鼠了。
废话不多说，直接上代码。
html：
<!DOCTYPE html>
<html lang="en">
<head><meta charset="UTF-8"><meta name="viewport" content="width=device-width, initial-scale=1.0"><meta http-equiv="X-UA-Compatible" content="ie=edge"><!-- 引入bootstrap --><link rel="stylesheet" href="https://cdn.staticfile.org/twitter-bootstrap/3.3.7/css/bootstrap.min.css"> <link rel="stylesheet" href="./css/d1g.css"><title>九宫格图片</title>
</head>
<body><!-- 操作区 --><div id="imgInfo"><button id="fileBtn" class="btn btn-info">当前为第1关</button><br><button id="updateUrl"class="btn btn-info">第2关</button><button id="clearInput"class="btn btn-primary">第3关</button><button id="tsBtn"class="btn btn-warning">提示</button><button id="resetBtn"class="btn btn-success">重新开始</button><br></div><!-- 九宫格图片 --><div class="wrap" id="wrap"><div class="box" id="box1"></div><div class="box" id="box2"></div><div class="box" id="box3"></div><div class="box" id="box4"></div><div class="box" id="box5"></div><div class="box" id="box6"></div><div class="box" id="box7"></div><div class="box" id="box8"></div><div class="box" id="box9"></div></div>
</body>
<!-- 引入js文件 -->
<script src="./js/d1g.js"></script>
</html>css：
/* 按钮容器 */
#imgInfo{margin: 20px;text-align: center;width: 100%;height: 20%;
}
#fileBtn{margin-bottom: 3.125rem;
}#updateBtn{padding-right: 3.125rem;
}/* 九宫格 */
.wrap{width: 1806px;height: 1806px;margin: 0 auto;display: flex;flex-wrap: wrap;justify-content: space-between;align-content: space-between;
}
.wrap > .box{width: 600px;height: 600px;background-repeat: no-repeat;background-size: cover;
}js：
window.onload = function(xh){var intNum = 1;// 获取视口宽度var screenWidth = window.innerWidth;// 获取视口高度var screenHeight = window.innerHeight;var wrap = document.querySelector('#wrap');var wrapWidth = screenHeight*0.78 + 'px'var btnWidth = screenWidth*0.2 + 'px'var btnHeight = screenHeight*0.06 + 'px'var fontHeight = screenHeight*0.06/2 + 'px'wrap.style.width =wrapWidth;wrap.style.height =wrapWidth;//获取元素var fileBtn = document.querySelector('#fileBtn')fileBtn.style.width = btnWidth;fileBtn.style.height = btnHeight;fileBtn.style.fontSize = fontHeight; // 将字体大小设置var updateBtn = document.querySelector('#updateUrl')//第2关var clearBtn = document.querySelector('#clearInput')//第3关var tsBtn = document.querySelector('#tsBtn')//提示var resetBtn = document.querySelector('#resetBtn')//重新开始/*设置按钮属性*/updateBtn.style.width = screenWidth*0.1 + 'px';updateBtn.style.height = screenHeight*0.04 + 'px';updateBtn.style.fontSize = screenHeight*0.04/2 + 'px';clearBtn.style.width = screenWidth*0.1 + 'px';clearBtn.style.height = screenHeight*0.04 + 'px';clearBtn.style.fontSize = screenHeight*0.04/2 + 'px';tsBtn.style.width = screenWidth*0.1 + 'px';tsBtn.style.height = screenHeight*0.04 + 'px';tsBtn.style.fontSize = screenHeight*0.04/2 + 'px';resetBtn.style.width = screenWidth*0.1 + 'px';resetBtn.style.height = screenHeight*0.04 + 'px';resetBtn.style.fontSize = screenHeight*0.04/2 + 'px';resetBtn.onclick = function(){window.onload(2)}var maskBox = document.querySelector("#mask")//监听 更新 按钮的点击updateBtn.onclick = function(){window.open('./d2g.html');}//监听 清空 按钮的点击clearBtn.onclick = function(){window.open('./d3g.html');}if(xh!=2){//开始配音var audio = new Audio('./audio/py7.MP3');// 播放音频audio.play();}//加载图片//获取所有格子var box = document.getElementsByClassName('box')//为每个容器设置背景图的urlfor(var i=0;i<box.length;i++){box[i].style.width =screenHeight*0.26 + 'px';box[i].style.height =screenHeight*0.26 + 'px';box[i].style.border = '1.5px solid white'var j = i+1;let selector = `#box${j}`;if(i==0){document.querySelector(selector).style.backgroundImage = `url('./img/xm1.png')`}if(i>0&i<8){document.querySelector(selector).style.backgroundImage = `url('./img/sz${j}.jpg')`}if(i==8){document.querySelector(selector).style.backgroundImage = `url('./img/ls1.png')`}}tsBtn.onclick = function(){audio = new Audio('./audio/py1.MP3');// 播放音频audio.play();}//选中点击数字图片事件document.querySelectorAll('.box').forEach(function(element) {element.addEventListener('click', function(event) {var kjId = this.idconst numbers = kjId.match(/\d+/g);for(var i=1;i<9;i++){if(i!=numbers){let selector = `#box${i}`;document.querySelector(selector).style.backgroundImage = `url('./img/sz${i}.jpg')`}}document.querySelector(`#${this.id}`).style.backgroundImage = `url('./img/xm1.png')`audio = new Audio('./audio/py13.MP3');// 播放音频audio.play();if(numbers==9){document.querySelector(`#${this.id}`).style.backgroundImage = `url('./img/xm2.png')`pauseSeconds(0.5, () => {audio = new Audio('./audio/py3.MP3');// 播放音频audio.play();})}});})function pauseSeconds(seconds, callback) {setTimeout(callback, seconds * 1000);}
}图片我就不上传了，读者自行放几张就OK~快去试试吧~~~
-查询优化(1)-WHERE子句)
