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diff --git "a/39\351\231\206\345\273\272\351\224\213/2022-11-17\347\254\254\345\215\201\344\270\203\346\254\241\344\275\234\344\270\232BOM/ikun/4.jpg" "b/39\351\231\206\345\273\272\351\224\213/2022-11-17\347\254\254\345\215\201\344\270\203\346\254\241\344\275\234\344\270\232BOM/ikun/4.jpg"
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diff --git "a/39\351\231\206\345\273\272\351\224\213/2022-11-17\347\254\254\345\215\201\344\270\203\346\254\241\344\275\234\344\270\232BOM/ikun/5.jpg" "b/39\351\231\206\345\273\272\351\224\213/2022-11-17\347\254\254\345\215\201\344\270\203\346\254\241\344\275\234\344\270\232BOM/ikun/5.jpg"
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diff --git "a/39\351\231\206\345\273\272\351\224\213/2022-11-17\347\254\254\345\215\201\344\270\203\346\254\241\344\275\234\344\270\232BOM/ikun/6.jpg" "b/39\351\231\206\345\273\272\351\224\213/2022-11-17\347\254\254\345\215\201\344\270\203\346\254\241\344\275\234\344\270\232BOM/ikun/6.jpg"
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diff --git "a/39\351\231\206\345\273\272\351\224\213/2022-11-17\347\254\254\345\215\201\344\270\203\346\254\241\344\275\234\344\270\232BOM/ikun/7.jpg" "b/39\351\231\206\345\273\272\351\224\213/2022-11-17\347\254\254\345\215\201\344\270\203\346\254\241\344\275\234\344\270\232BOM/ikun/7.jpg"
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diff --git "a/39\351\231\206\345\273\272\351\224\213/2022-11-17\347\254\254\345\215\201\344\270\203\346\254\241\344\275\234\344\270\232BOM/\344\275\234\344\270\232.html" "b/39\351\231\206\345\273\272\351\224\213/2022-11-17\347\254\254\345\215\201\344\270\203\346\254\241\344\275\234\344\270\232BOM/\344\275\234\344\270\232.html"
new file mode 100644
index 0000000000000000000000000000000000000000..861d5d6d1499535f879dc67906f58e370099e41c
--- /dev/null
+++ "b/39\351\231\206\345\273\272\351\224\213/2022-11-17\347\254\254\345\215\201\344\270\203\346\254\241\344\275\234\344\270\232BOM/\344\275\234\344\270\232.html"
@@ -0,0 +1,71 @@
+<!DOCTYPE html>
+<html lang="en">
+<head>
+    <meta charset="UTF-8">
+    <meta http-equiv="X-UA-Compatible" content="IE=edge">
+    <meta name="viewport" content="width=device-width, initial-scale=1.0">
+    <title>班级点名</title>
+     <style>
+    body{
+        margin: 0 auto;
+        text-align: center;
+    }
+    .box{
+        display: block;
+        background-color:white;
+        margin: 0 auto;
+        padding-top: 50px;
+        border-radius: 10px;
+        width: 300px;
+        height: 150px;
+        box-shadow: 0px 0px 4px 4px #c3c3c3;
+    }
+    .showName{
+        background-color: #c3c3c3;
+        margin: 0 auto;
+        border-radius: 5px;
+        width: 200px;
+        height: 45px;
+        line-height:45px;
+        font-size: 18px;
+        font-weight: bolder;
+        
+    }
+    button{
+        margin-top: 30px;
+        background-color: #017515;
+        border: #c3c3c3 1px solid;
+        border-radius: 3px;
+        box-shadow:0px 0px 4px 2px #c3c3c3;
+        padding: 5px 20px;
+    }
+    </style>
+</head>
+<body>
+    <h1>四班点名器</h1>
+    <div class="box">
+        <div id="sid">
+            随机抽一位大冤种
+        </div>
+        <div id="sp" style="width: 300px; ;"></div>
+        <button id="bid" onclick="doShowName();">开始</button>
+    <script type="text/javascript">
+ var Data =["郑玮喆","庄云","廖治先","郑文源","戴俊锋","陈昊童","谢金金","占志新","张淑芳","刘永潘","廖柏成","郑宗帅","李韦峰","吴欣燕","陈梅香","陈立智","袁贵森","赵浩敏","林世涛","罗启恒","卢国建","黄柱菘","陈鹏","张耀仁","陈华伟","张正豪","韦仲晓","黄富贵","陆建锋","曾德森","吴文龙","陆利群" ,"黄雄","王世财" ,"张先杰" ,"胡基耀" ,"马鑫涛", "李涛","杨凌翔","罗此东","唐皓颖","白婉婷"]
+        var times = 0;
+        var st;
+        function fn() {
+            times++;
+            var num = parseInt(Math.random() * 41 + 1);
+            var arr = Data[num-1]
+            document.getElementById('sp').innerText = '原来大冤种是你:' +arr;
+            if (times >= 30 && num==10) {
+                clearInterval(st);
+            }
+        }
+        function doShowName(){
+            times = 0;
+            st = setInterval (fn ,100);
+        }
+    </script>
+</body>
+</html>
diff --git "a/39\351\231\206\345\273\272\351\224\213/2022-11-17\347\254\254\345\215\201\344\270\203\346\254\241\344\275\234\344\270\232BOM/\344\275\234\344\270\2322.html" "b/39\351\231\206\345\273\272\351\224\213/2022-11-17\347\254\254\345\215\201\344\270\203\346\254\241\344\275\234\344\270\232BOM/\344\275\234\344\270\2322.html"
new file mode 100644
index 0000000000000000000000000000000000000000..acc618ad0c6f4b93dc88da67dafe67f7607c8cea
--- /dev/null
+++ "b/39\351\231\206\345\273\272\351\224\213/2022-11-17\347\254\254\345\215\201\344\270\203\346\254\241\344\275\234\344\270\232BOM/\344\275\234\344\270\2322.html"
@@ -0,0 +1,40 @@
+<!DOCTYPE html>
+<html lang="en">
+
+<head>
+    <meta charset="UTF-8">
+    <meta http-equiv="X-UA-Compatible" content="IE=edge">
+    <meta name="viewport" content="width=device-width, initial-scale=1.0">
+    <title>Document</title>
+</head>
+<style>
+    div {
+        width: 700px;
+        height: 500px;
+    }
+</style>
+
+<body>
+    <div>
+        <img src="./ikun/6.jpg" style="width: 700px; height:500px">
+    </div>
+    <script>
+        var img = document.getElementsByTagName('img')[0];
+        const imgArr = ['1.jpg','2.jpg','3.jpg','4.jpg','5.jpg','6.jpg','7.jpg',];
+        var count = 0;
+        function fn() {
+            console.log(count);
+            if (count < 6) {
+                count++;
+            } else {
+                count = 0;
+            }
+
+            img.src = "./ikun/" + imgArr[count];
+            return setTimeout(fn, 500);
+        }
+        setTimeout(fn, 2000);
+    </script>
+</body>
+
+</html>
\ No newline at end of file
diff --git "a/39\351\231\206\345\273\272\351\224\213/2022-11-17\347\254\254\345\215\201\344\270\203\346\254\241\344\275\234\344\270\232BOM/\347\254\224\350\256\260.md" "b/39\351\231\206\345\273\272\351\224\213/2022-11-17\347\254\254\345\215\201\344\270\203\346\254\241\344\275\234\344\270\232BOM/\347\254\224\350\256\260.md"
new file mode 100644
index 0000000000000000000000000000000000000000..7d9354c804ddf2d292830686bc2f61ea08b6f57f
--- /dev/null
+++ "b/39\351\231\206\345\273\272\351\224\213/2022-11-17\347\254\254\345\215\201\344\270\203\346\254\241\344\275\234\344\270\232BOM/\347\254\224\350\256\260.md"
@@ -0,0 +1,27 @@
+BOMB（Browser Object Model）即浏览器对象模型，它提供了独立于内容而与浏览器窗口进行交互
+的对象，其核心 对象是 window。
+BOM 由一系列相关的对象构成，并且每个对象都提供了很多方法与属性。
+     navigator.appName //得到浏览器名称
+     location.href //当前网页地址，修改可跳转到另一个页面
+     screen.width//屏幕宽
+     screen.height//屏幕高
+     history //保存网页浏览记录
+     history.back()//跳转到上一个网页
+     history.forward()//跳转到下一个网页
+     history.go(val) //val为-1 跳转到上一个页面,val为1 跳转到下一个页面
+
+     window（顶层窗口，以上方法都属于window下）
+     confirm("内容")确认框
+     alert("内容")提示框
+     prompt("显示内容","默认值")//输入对话框
+     open("新窗口的地址","一般不写","窗口特征,宽度或高度")//打开一个新窗口
+     close()//关闭窗口
+     window.opener//得到创建这个窗口的窗口
+    定时器:
+         setInterval("js代码",毫秒数)//每几毫秒执行一次来重复调用函数或表达式；
+         clearInterval(定时器名称)//清除setInterval设置的定时器
+         setTimeout("js代码",毫秒数)//延迟多少毫秒执行
+         clearTimeout(定时器名称)//清除setTimeout设置的定时器
+
+
+    
\ No newline at end of file
diff --git "a/39\351\231\206\345\273\272\351\224\213/2022-11-18\347\254\254\345\215\201\345\205\253\346\254\241\344\275\234\344\270\232\350\212\202\347\202\271\346\226\271\346\263\225/\344\275\234\344\270\232.html" "b/39\351\231\206\345\273\272\351\224\213/2022-11-18\347\254\254\345\215\201\345\205\253\346\254\241\344\275\234\344\270\232\350\212\202\347\202\271\346\226\271\346\263\225/\344\275\234\344\270\232.html"
new file mode 100644
index 0000000000000000000000000000000000000000..f0a6a0c60c05c724e781cbb74704355be3642b01
--- /dev/null
+++ "b/39\351\231\206\345\273\272\351\224\213/2022-11-18\347\254\254\345\215\201\345\205\253\346\254\241\344\275\234\344\270\232\350\212\202\347\202\271\346\226\271\346\263\225/\344\275\234\344\270\232.html"
@@ -0,0 +1,47 @@
+<!DOCTYPE html>
+<html lang="en">
+<head>
+    <meta charset="UTF-8">
+    <meta http-equiv="X-UA-Compatible" content="IE=edge">
+    <meta name="viewport" content="width=device-width, initial-scale=1.0">
+    <title>Document</title>
+    
+</head>
+<body>
+    <p id='sourceTxt'>这是将要复制的文本</p>
+    <textarea id="copyTxt" cols="30" rows="10"></textarea>
+    <button id='btn'>点击复制</button>
+    <script>
+    btn.onclick = function () {
+        copyTxt.value = sourceTxt.innerText		
+        copyTxt.select()						
+      
+    }
+ </script>
+</body>
+<script type="text/javascript">
+    let a=true
+    function show() {
+        var div= document.getElementById('div')
+        if (a) {
+        a=!a
+        var newH2=document.createElement('h2')
+        var text =document.createTextNode('封校三天 快乐无边')
+        newH2.appendChild(text)
+        div.appendChild(newH2);
+        }
+        
+        var newButtom=document.getElementById('button')
+        if (newButtom.value==='展开') {
+            div.style.display=''
+            newButtom.value='收起'
+        }else{
+            div.style.display='none'
+            newButtom.value='展开'
+        }          
+    }
+</script>
+<input type="button" value="展开" onclick="show()"id="button" >
+<div id="div"style="display: none"></div>
+</body>
+</html>
diff --git "a/39\351\231\206\345\273\272\351\224\213/2022-11-18\347\254\254\345\215\201\345\205\253\346\254\241\344\275\234\344\270\232\350\212\202\347\202\271\346\226\271\346\263\225/\347\254\224\350\256\260.md" "b/39\351\231\206\345\273\272\351\224\213/2022-11-18\347\254\254\345\215\201\345\205\253\346\254\241\344\275\234\344\270\232\350\212\202\347\202\271\346\226\271\346\263\225/\347\254\224\350\256\260.md"
new file mode 100644
index 0000000000000000000000000000000000000000..18a28e0c00fdd9d86354accc74f0d16fccfc79d2
--- /dev/null
+++ "b/39\351\231\206\345\273\272\351\224\213/2022-11-18\347\254\254\345\215\201\345\205\253\346\254\241\344\275\234\344\270\232\350\212\202\347\202\271\346\226\271\346\263\225/\347\254\224\350\256\260.md"
@@ -0,0 +1,57 @@
+    节点类型:
+        节点类型为1：元素节点
+        节点类型3：文本节点
+        节点类型2: 属性节点
+        // 元素(elements)
+        //查看bod  // console.log(document.body.childElementCount);
+        console.log(document.body.children);
+        //查看子节点
+        console.log(document.body.firstChild);//所有节点中的第一个节点
+        console.log(document.body.firstElementChild);//找第一个元素节点
+        //查看父节点
+        console.log(document.body.children[0].parentElement);
+        //上一个元素节点
+        console.log(document.body.children[1].previousElementSibling);
+        //下一个元素节点
+        console.log(document.body.children[1].nextElementSibling);
+
+
+    节点方法:
+        根据class获取元素: 返回: HTMLCollection (数组)
+        console.log(document.getElementsByClassName('H2'));
+        根据name属性获取元素对象: NodeList(伪数组)：只能获取下标和长度
+        console.log(document.getElementsByName('username'));
+        根据标签名获取元素对象:返回 HTMLCollection
+        console.log(document.getElementsByTagName('input'));
+        根据id属性获取元素对象，返回当前元素对象
+        console.log(document.getElementById('thirdH2'));
+        DOM2 
+        找class=H2的元素对象，如果不止一个，返回第一个元素对象
+        根据class :  ('.className')
+        根据Id  ： ('#id')
+        根据标签名:  ('div')
+        console.log(document.querySelector('div'));
+        找全部
+        console.log(document.querySelectorAll('.H2'));
+
+    节点的增删改查:
+        创建元素节点
+        var newH2 = document.createElement('h2');
+        var txt = document.createTextNode('我是新添加的H2');
+        newH2.appendChild(txt);
+        // 添加子元素节点
+        div.appendChild(newH2);
+
+        删除子节点:removeChild(元素对象:h2)
+        var h2 = document.getElementById('h2');
+        div.removeChild(h2);
+
+        var newH3 = document.createElement('h3');
+        var txt = document.createTextNode('替换的h3');
+        var h2 = document.getElementById('h2');
+        newH3.appendChild(txt);
+
+        //改:replaceChild
+        // div.replaceChild(newH3,h2);
+        //在...之前插入一个节点
+        div.insertBefore(newH3,h2);
\ No newline at end of file