diff --git "a/\345\215\242\346\231\223\344\270\275/20220225/dome1.js" "b/\345\215\242\346\231\223\344\270\275/20220225/dome1.js"
new file mode 100644
index 0000000000000000000000000000000000000000..385f9d1b0bd36256d712fb489258a469b4387056
--- /dev/null
+++ "b/\345\215\242\346\231\223\344\270\275/20220225/dome1.js"
@@ -0,0 +1,65 @@
+//第二次作业
+
+let fs =require("fs");
+
+let createFile=
+{  
+    //创建目录
+    createDir:function() 
+    {   
+
+        //检查目录是否存在
+        // fs.existsSync (path)方法用于同步检查给定路径中是​​否已存在文件。
+        //括号里的path：是将要检查的目录路径；
+
+        //用法：fs.mkdirSync( path, options )
+        //path:要在其中创建目录的路径。它可以是字符串，缓冲区等。
+        //options:它是一个可选参数，用于确定如何像递归地创建目录等。
+        //fs.mkdirSync()方法用于同步创建目录。
+
+        if(fs.existsSync(dirname))
+        return;
+        fs.mkdirSync(dirname);
+    },
+
+
+    //根据个数去创建内容
+   createConent:function(num)
+   {
+   return num + '';   //未考虑异常 todo number 转成 string 
+   },
+
+   //创建文件名
+   createFilename:function(dir,num)
+   {
+    return dir + '20220224'+num+'.txt'
+   },
+
+
+   createFile:function(filename,content)
+   {
+
+     /**
+         * flags:标识 r 只读 w 可写  a(apppend) 追加 不会删除原有的数据
+     */
+    
+     //打开创建文件
+     let fd=fs.openSync(filename,'a');
+
+     fs.writeSync(fd,content);
+     fs.closeSync(fd);
+   },
+   //业务处理
+   handle:function(dir,num){
+       this.createDir
+       for(let i=1;i<=num;i++){
+
+        let filename = this.createFilename(dir,i)
+        let content = this.createConent(i);
+        this.createFile(filename,content);
+       }
+   }
+}
+
+createFile.handle('./files',10)
+
diff --git "a/\345\215\242\346\231\223\344\270\275/20220225/files202202241.txt" "b/\345\215\242\346\231\223\344\270\275/20220225/files202202241.txt"
new file mode 100644
index 0000000000000000000000000000000000000000..56a6051ca2b02b04ef92d5150c9ef600403cb1de
--- /dev/null
+++ "b/\345\215\242\346\231\223\344\270\275/20220225/files202202241.txt"
@@ -0,0 +1 @@
+1
\ No newline at end of file
diff --git "a/\345\215\242\346\231\223\344\270\275/20220225/files2022022410.txt" "b/\345\215\242\346\231\223\344\270\275/20220225/files2022022410.txt"
new file mode 100644
index 0000000000000000000000000000000000000000..9a037142aa3c1b4c490e1a38251620f113465330
--- /dev/null
+++ "b/\345\215\242\346\231\223\344\270\275/20220225/files2022022410.txt"
@@ -0,0 +1 @@
+10
\ No newline at end of file
diff --git "a/\345\215\242\346\231\223\344\270\275/20220225/files202202242.txt" "b/\345\215\242\346\231\223\344\270\275/20220225/files202202242.txt"
new file mode 100644
index 0000000000000000000000000000000000000000..d8263ee9860594d2806b0dfd1bfd17528b0ba2a4
--- /dev/null
+++ "b/\345\215\242\346\231\223\344\270\275/20220225/files202202242.txt"
@@ -0,0 +1 @@
+2
\ No newline at end of file
diff --git "a/\345\215\242\346\231\223\344\270\275/20220225/files202202243.txt" "b/\345\215\242\346\231\223\344\270\275/20220225/files202202243.txt"
new file mode 100644
index 0000000000000000000000000000000000000000..e440e5c842586965a7fb77deda2eca68612b1f53
--- /dev/null
+++ "b/\345\215\242\346\231\223\344\270\275/20220225/files202202243.txt"
@@ -0,0 +1 @@
+3
\ No newline at end of file
diff --git "a/\345\215\242\346\231\223\344\270\275/20220225/files202202244.txt" "b/\345\215\242\346\231\223\344\270\275/20220225/files202202244.txt"
new file mode 100644
index 0000000000000000000000000000000000000000..bf0d87ab1b2b0ec1a11a3973d2845b42413d9767
--- /dev/null
+++ "b/\345\215\242\346\231\223\344\270\275/20220225/files202202244.txt"
@@ -0,0 +1 @@
+4
\ No newline at end of file
diff --git "a/\345\215\242\346\231\223\344\270\275/20220225/files202202245.txt" "b/\345\215\242\346\231\223\344\270\275/20220225/files202202245.txt"
new file mode 100644
index 0000000000000000000000000000000000000000..7813681f5b41c028345ca62a2be376bae70b7f61
--- /dev/null
+++ "b/\345\215\242\346\231\223\344\270\275/20220225/files202202245.txt"
@@ -0,0 +1 @@
+5
\ No newline at end of file
diff --git "a/\345\215\242\346\231\223\344\270\275/20220225/files202202246.txt" "b/\345\215\242\346\231\223\344\270\275/20220225/files202202246.txt"
new file mode 100644
index 0000000000000000000000000000000000000000..62f9457511f879886bb7728c986fe10b0ece6bcb
--- /dev/null
+++ "b/\345\215\242\346\231\223\344\270\275/20220225/files202202246.txt"
@@ -0,0 +1 @@
+6
\ No newline at end of file
diff --git "a/\345\215\242\346\231\223\344\270\275/20220225/files202202247.txt" "b/\345\215\242\346\231\223\344\270\275/20220225/files202202247.txt"
new file mode 100644
index 0000000000000000000000000000000000000000..c7930257dfef505fd996e1d6f22f2f35149990d0
--- /dev/null
+++ "b/\345\215\242\346\231\223\344\270\275/20220225/files202202247.txt"
@@ -0,0 +1 @@
+7
\ No newline at end of file
diff --git "a/\345\215\242\346\231\223\344\270\275/20220225/files202202248.txt" "b/\345\215\242\346\231\223\344\270\275/20220225/files202202248.txt"
new file mode 100644
index 0000000000000000000000000000000000000000..301160a93062df23030a69f4b5e4d9bf71866ee9
--- /dev/null
+++ "b/\345\215\242\346\231\223\344\270\275/20220225/files202202248.txt"
@@ -0,0 +1 @@
+8
\ No newline at end of file
diff --git "a/\345\215\242\346\231\223\344\270\275/20220225/files202202249.txt" "b/\345\215\242\346\231\223\344\270\275/20220225/files202202249.txt"
new file mode 100644
index 0000000000000000000000000000000000000000..f11c82a4cb6cc2e8f3bdf52b5cdeaad4d5bb214e
--- /dev/null
+++ "b/\345\215\242\346\231\223\344\270\275/20220225/files202202249.txt"
@@ -0,0 +1 @@
+9
\ No newline at end of file
diff --git "a/\345\215\242\346\231\223\344\270\275/buffer/demo1.js" "b/\345\215\242\346\231\223\344\270\275/buffer/demo1.js"
new file mode 100644
index 0000000000000000000000000000000000000000..0bc7928756330e0bc5257b8e0629d6d19f867b72
--- /dev/null
+++ "b/\345\215\242\346\231\223\344\270\275/buffer/demo1.js"
@@ -0,0 +1,13 @@
+// 写一段代码,可以指定的创业多个文件，文件名中要有序号，写入的内容可以随机
+let fs = require('fs'); //该方法属于fs模块，使用前需要引入fs模块
+
+for(let i = 1;i <= 9;i++){
+    let fd = fs.openSync(`第${i}个文件`,`w`);//以读取模式打开文件，如果文件不存在则创建
+    //异步写入
+    fs.writeSync(fd,`肚子饿了${i+1}`,function(err){
+        if(err){
+            throw err;
+        }
+    });
+fs.closeSync(fd);
+}
diff --git "a/\345\215\242\346\231\223\344\270\275/buffer/\347\254\2541\344\270\252\346\226\207\344\273\266" "b/\345\215\242\346\231\223\344\270\275/buffer/\347\254\2541\344\270\252\346\226\207\344\273\266"
new file mode 100644
index 0000000000000000000000000000000000000000..d440e2cbc2e8511f34d039917c048e62b0239e5e
--- /dev/null
+++ "b/\345\215\242\346\231\223\344\270\275/buffer/\347\254\2541\344\270\252\346\226\207\344\273\266"
@@ -0,0 +1 @@
+肚子饿了2
\ No newline at end of file
diff --git "a/\345\215\242\346\231\223\344\270\275/buffer/\347\254\2542\344\270\252\346\226\207\344\273\266" "b/\345\215\242\346\231\223\344\270\275/buffer/\347\254\2542\344\270\252\346\226\207\344\273\266"
new file mode 100644
index 0000000000000000000000000000000000000000..77a6b28561a44535bfae4df0aff7e648db4c7006
--- /dev/null
+++ "b/\345\215\242\346\231\223\344\270\275/buffer/\347\254\2542\344\270\252\346\226\207\344\273\266"
@@ -0,0 +1 @@
+肚子饿了3
\ No newline at end of file
diff --git "a/\345\215\242\346\231\223\344\270\275/buffer/\347\254\2543\344\270\252\346\226\207\344\273\266" "b/\345\215\242\346\231\223\344\270\275/buffer/\347\254\2543\344\270\252\346\226\207\344\273\266"
new file mode 100644
index 0000000000000000000000000000000000000000..eb18e7835a1dd1f24797ede7fff38e5c9423c75e
--- /dev/null
+++ "b/\345\215\242\346\231\223\344\270\275/buffer/\347\254\2543\344\270\252\346\226\207\344\273\266"
@@ -0,0 +1 @@
+肚子饿了4
\ No newline at end of file
diff --git "a/\345\215\242\346\231\223\344\270\275/buffer/\347\254\2544\344\270\252\346\226\207\344\273\266" "b/\345\215\242\346\231\223\344\270\275/buffer/\347\254\2544\344\270\252\346\226\207\344\273\266"
new file mode 100644
index 0000000000000000000000000000000000000000..68868db6be565625d2c99aa7777d45f2f5c7862c
--- /dev/null
+++ "b/\345\215\242\346\231\223\344\270\275/buffer/\347\254\2544\344\270\252\346\226\207\344\273\266"
@@ -0,0 +1 @@
+肚子饿了5
\ No newline at end of file
diff --git "a/\345\215\242\346\231\223\344\270\275/buffer/\347\254\2545\344\270\252\346\226\207\344\273\266" "b/\345\215\242\346\231\223\344\270\275/buffer/\347\254\2545\344\270\252\346\226\207\344\273\266"
new file mode 100644
index 0000000000000000000000000000000000000000..a116bbbf7b620dea7a95c108b5fefacea5f95237
--- /dev/null
+++ "b/\345\215\242\346\231\223\344\270\275/buffer/\347\254\2545\344\270\252\346\226\207\344\273\266"
@@ -0,0 +1 @@
+肚子饿了6
\ No newline at end of file
diff --git "a/\345\215\242\346\231\223\344\270\275/buffer/\347\254\2546\344\270\252\346\226\207\344\273\266" "b/\345\215\242\346\231\223\344\270\275/buffer/\347\254\2546\344\270\252\346\226\207\344\273\266"
new file mode 100644
index 0000000000000000000000000000000000000000..e08cd369ab1cec3a1446dd9b9f3b40a263e2a70a
--- /dev/null
+++ "b/\345\215\242\346\231\223\344\270\275/buffer/\347\254\2546\344\270\252\346\226\207\344\273\266"
@@ -0,0 +1 @@
+肚子饿了7
\ No newline at end of file
diff --git "a/\345\215\242\346\231\223\344\270\275/buffer/\347\254\2547\344\270\252\346\226\207\344\273\266" "b/\345\215\242\346\231\223\344\270\275/buffer/\347\254\2547\344\270\252\346\226\207\344\273\266"
new file mode 100644
index 0000000000000000000000000000000000000000..6944f6473f45f39394dcf5f6b9023ec03ffee4dd
--- /dev/null
+++ "b/\345\215\242\346\231\223\344\270\275/buffer/\347\254\2547\344\270\252\346\226\207\344\273\266"
@@ -0,0 +1 @@
+肚子饿了8
\ No newline at end of file
diff --git "a/\345\215\242\346\231\223\344\270\275/buffer/\347\254\2548\344\270\252\346\226\207\344\273\266" "b/\345\215\242\346\231\223\344\270\275/buffer/\347\254\2548\344\270\252\346\226\207\344\273\266"
new file mode 100644
index 0000000000000000000000000000000000000000..33a58c2caa26cf30d596bb8926830d565c8b5167
--- /dev/null
+++ "b/\345\215\242\346\231\223\344\270\275/buffer/\347\254\2548\344\270\252\346\226\207\344\273\266"
@@ -0,0 +1 @@
+肚子饿了9
\ No newline at end of file
diff --git "a/\345\215\242\346\231\223\344\270\275/buffer/\347\254\2549\344\270\252\346\226\207\344\273\266" "b/\345\215\242\346\231\223\344\270\275/buffer/\347\254\2549\344\270\252\346\226\207\344\273\266"
new file mode 100644
index 0000000000000000000000000000000000000000..f0b3fb0f228ecd572e65f9dd695c26735d6f992f
--- /dev/null
+++ "b/\345\215\242\346\231\223\344\270\275/buffer/\347\254\2549\344\270\252\346\226\207\344\273\266"
@@ -0,0 +1 @@
+肚子饿了10
\ No newline at end of file