diff --git a/k.txt b/k.txt
deleted file mode 100644
index e69de29bb2d1d6434b8b29ae775ad8c2e48c5391..0000000000000000000000000000000000000000
diff --git "a/\346\210\264\344\275\263\350\276\211/20230215-\346\250\241\345\235\227\347\232\204\344\275\277\347\224\250/module.js" "b/\346\210\264\344\275\263\350\276\211/20230215-\346\250\241\345\235\227\347\232\204\344\275\277\347\224\250/module.js"
new file mode 100644
index 0000000000000000000000000000000000000000..bfe359d93123b8af84fbc19702deaaa593608723
--- /dev/null
+++ "b/\346\210\264\344\275\263\350\276\211/20230215-\346\250\241\345\235\227\347\232\204\344\275\277\347\224\250/module.js"
@@ -0,0 +1,23 @@
+//作业：写个加减乘除的模块（尽量少写暴露,要考虑复用性），供外部使用. 作业每个分支要建一个目录（自己名字）
+class method  {
+    constructor(a,b){
+        this.a = a;
+        this.b = b;
+    }
+    add(){
+        return this.a + this.b;
+    }
+    subtract(){
+        return this.a - this.b;
+    }
+    multiply(){
+        return this.a * this.b;
+    }
+    divide(){
+        if(this.b==0){
+            return "除数不能为零";
+        }
+        return this.a / this.b;
+    }
+}
+module.exports = method;
\ No newline at end of file
diff --git "a/\346\242\205\346\242\246\347\224\234/\346\242\205\346\242\246\347\224\2340215/0215.js" "b/\346\210\264\344\275\263\350\276\211/20230215-\346\250\241\345\235\227\347\232\204\344\275\277\347\224\250/\344\275\234\344\270\232.js"
similarity index 31%
rename from "\346\242\205\346\242\246\347\224\234/\346\242\205\346\242\246\347\224\2340215/0215.js"
rename to "\346\210\264\344\275\263\350\276\211/20230215-\346\250\241\345\235\227\347\232\204\344\275\277\347\224\250/\344\275\234\344\270\232.js"
index ca326f02883c736d906ec63e6f9db90ae55eff58..43611eb9c172a940c2a29fb90af4d5086d76cf93 100644
--- "a/\346\242\205\346\242\246\347\224\234/\346\242\205\346\242\246\347\224\2340215/0215.js"
+++ "b/\346\210\264\344\275\263\350\276\211/20230215-\346\250\241\345\235\227\347\232\204\344\275\277\347\224\250/\344\275\234\344\270\232.js"
@@ -1,25 +1,9 @@
 //作业：写个加减乘除的模块（尽量少写暴露,要考虑复用性），供外部使用. 作业每个分支要建一个目录（自己名字）
-  
-var num1;
-var num2;
-let obj={
-    change:function(num11,num22){
-        num1=num11
-        num2=num22;
-    },
-    jia:function(){
-        return num1+num2;
-    },
-    jian:function(){
-        return num1-num2
-    },
-    cheng:function(){
-        return num1*num2
-    },
-    chu:function(){
-        return num1/num2
-    }
-}
-module.exports.obj=obj;
+let obj = require("./module");
 
+var add = new obj(10,5);
 
+console.log('加法结果为:'+add.add());
+console.log('减法结果为:'+add.subtract());
+console.log('乘法结果为:'+add.multiply());
+console.log('除法结果为:'+add.divide());
\ No newline at end of file
diff --git "a/\346\210\264\344\275\263\350\276\211/20230216-\346\226\207\344\273\266\347\232\204\345\206\231\345\205\245\344\273\245\345\217\212\350\257\273\345\217\226/file.js" "b/\346\210\264\344\275\263\350\276\211/20230216-\346\226\207\344\273\266\347\232\204\345\206\231\345\205\245\344\273\245\345\217\212\350\257\273\345\217\226/file.js"
new file mode 100644
index 0000000000000000000000000000000000000000..8c93aaf5493525f618af297f8c24b0f923258494
--- /dev/null
+++ "b/\346\210\264\344\275\263\350\276\211/20230216-\346\226\207\344\273\266\347\232\204\345\206\231\345\205\245\344\273\245\345\217\212\350\257\273\345\217\226/file.js"
@@ -0,0 +1,52 @@
+//文件读取需要使用fs模块,fs node自带的
+let fs = require("fs");
+//异步读取文件
+// fs.readFile('./weekend.txt', (error, data) => {
+//     console.log(error);
+//     console.log(data);//data 是 Buffer 类型
+//     console.log(data.toString());//1
+// });
+// console.log("我在前面还是后面输出");//
+
+//同步读取文件
+// let data = fs.readFileSync("./sports.txt");
+// console.log(data.toString());
+// console.log("会不会先输出");
+
+//假设读取文件 100毫秒，一个函数执行5毫秒，异步方式执行这个代码，总的耗时是多少 100毫秒，同步方式 105毫秒
+
+//文件写入
+
+//同步文件写入,有这个Sync就是同步
+
+// 作业：生成100个文件，每个文件存入一个1到1000的随机数字，再取出最大值的那个文件,值也要取出来,再取出最小的那个.
+var arr=[];
+for(let i=1;i<=10;i++){
+    var a = Math.floor(Math.random()*1001);
+    fs.writeFileSync("./D"+i,""+a);
+    arr.push(a);
+    fs.readFile("./D"+i,(error,data)=>{
+        var num = data.toString();
+        console.log("该文件夹后缀为:"+i+",数值为："+num);
+    })
+}
+var max=arr[0];
+var maxhz=1;
+for(let ii=0;ii<arr.length;ii++){
+    if(arr[ii]>max){
+        max=arr[ii];
+        maxhz=ii+1;
+    }
+}
+
+var min=arr[0];
+var minhz=1;
+for(let iii=0;iii<arr.length;iii++){
+    if(arr[iii]<min){
+        min=arr[iii]
+        minhz=iii+1;
+    }
+}
+console.log("---最大值为:"+max+",该文件名为：D"+maxhz);
+console.log("---最小值为:"+min+",该文件名为：D"+minhz);
+
diff --git "a/\346\242\205\346\242\246\347\224\234/\346\242\205\346\242\246\347\224\2340215/result.js" "b/\346\242\205\346\242\246\347\224\234/\346\242\205\346\242\246\347\224\2340215/result.js"
deleted file mode 100644
index be3d653597aaad5a06519afdbd027d1c40c2266a..0000000000000000000000000000000000000000
--- "a/\346\242\205\346\242\246\347\224\234/\346\242\205\346\242\246\347\224\2340215/result.js"
+++ /dev/null
@@ -1,7 +0,0 @@
-let obj=require("./0215.js");
-obj.obj.change(5,5);
-console.log(obj.obj.jia());
-console.log(obj.obj.jian());
-console.log(obj.obj.cheng());
-console.log(obj.obj.chu());
-
diff --git "a/\347\216\213\351\200\270\346\260\221/\346\250\241\345\235\227/index.html" "b/\347\216\213\351\200\270\346\260\221/\346\250\241\345\235\227/index.html"
deleted file mode 100644
index b2ec421001f4412a16b9cdd94b01d17dfb0cc9a0..0000000000000000000000000000000000000000
--- "a/\347\216\213\351\200\270\346\260\221/\346\250\241\345\235\227/index.html"
+++ /dev/null
@@ -1,14 +0,0 @@
-<!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>
-    <script src="./jsq.js"></script>
-    <script src="./shuzhi.js"></script>
-</head>
-<body>
-  
-</body>
-</html>
\ No newline at end of file
diff --git "a/\347\216\213\351\200\270\346\260\221/\346\250\241\345\235\227/jsq.js" "b/\347\216\213\351\200\270\346\260\221/\346\250\241\345\235\227/jsq.js"
deleted file mode 100644
index 9304e333e8068ba9a9fccb638b778bf450b0416f..0000000000000000000000000000000000000000
--- "a/\347\216\213\351\200\270\346\260\221/\346\250\241\345\235\227/jsq.js"
+++ /dev/null
@@ -1,8 +0,0 @@
-let obj={
-  jia :function jia(shu1,shu2){
-    return shu1+shu2;
-  }   
-}
-
-
-module.exports = obj;
\ No newline at end of file
diff --git "a/\347\216\213\351\200\270\346\260\221/\346\250\241\345\235\227/shuzhi.js" "b/\347\216\213\351\200\270\346\260\221/\346\250\241\345\235\227/shuzhi.js"
deleted file mode 100644
index b45016a9e586ea11e6ce4746d468098b2ce94dda..0000000000000000000000000000000000000000
--- "a/\347\216\213\351\200\270\346\260\221/\346\250\241\345\235\227/shuzhi.js"
+++ /dev/null
@@ -1,3 +0,0 @@
-let obj= require("./jsq.js");
-
-console.log(obj.jia(10,20));
\ No newline at end of file
diff --git "a/\351\237\246\347\273\215\344\270\245/\346\250\241\345\235\227-23.02.15/index.js" "b/\351\237\246\347\273\215\344\270\245/\346\250\241\345\235\227-23.02.15/index.js"
deleted file mode 100644
index fd32dfddeab12d75d44f47af73292c20319342bd..0000000000000000000000000000000000000000
--- "a/\351\237\246\347\273\215\344\270\245/\346\250\241\345\235\227-23.02.15/index.js"
+++ /dev/null
@@ -1,35 +0,0 @@
-module.exports={
-    add:function(a,b){
-        if(typeof(a)=="number" && typeof(b)=="number"){
-            return a+b;
-        }else{
-            return "非数值"
-        }
-    },
-    sub:function(a,b){
-        if(typeof(a)=="number" && typeof(b)=="number"){
-            return a-b;
-        }else{
-            return "非数值"
-        }
-    },
-    mul:function(a,b){
-        if(typeof(a)=="number" && typeof(b)=="number"){
-            return a*b;
-        }else{
-            return "非数值"
-        }
-    },
-    div:function(a,b){
-        if(typeof(a)=="number" && typeof(b)=="number"){
-            if(b==0){
-                return "除数不能为0"
-            }else{
-                return a/b;
-            }
-            
-        }else{
-            return "非数值"
-        }
-    }
-}
\ No newline at end of file
diff --git "a/\351\237\246\347\273\215\344\270\245/\346\250\241\345\235\227-23.02.15/use.js" "b/\351\237\246\347\273\215\344\270\245/\346\250\241\345\235\227-23.02.15/use.js"
deleted file mode 100644
index c93774a348201bbd628d007050bb1c9310819fd8..0000000000000000000000000000000000000000
--- "a/\351\237\246\347\273\215\344\270\245/\346\250\241\345\235\227-23.02.15/use.js"
+++ /dev/null
@@ -1,5 +0,0 @@
-let use = require("./index.js")
-console.log(use.add(0,2));
-console.log(use.sub('p',2));
-console.log(use.mul(2,2));
-console.log(use.div(2,0));
\ No newline at end of file
diff --git "a/\351\237\246\347\273\215\344\270\245/\351\237\246\347\273\215\344\270\245.txt" "b/\351\237\246\347\273\215\344\270\245/\351\237\246\347\273\215\344\270\245.txt"
deleted file mode 100644
index e69de29bb2d1d6434b8b29ae775ad8c2e48c5391..0000000000000000000000000000000000000000