diff --git "a/\351\202\223\351\230\263\345\265\230/node1/index.js" "b/\351\202\223\351\230\263\345\265\230/node1/index.js"
new file mode 100644
index 0000000000000000000000000000000000000000..c759cb56492ac9ccdac8739ce5c084485ff319af
--- /dev/null
+++ "b/\351\202\223\351\230\263\345\265\230/node1/index.js"
@@ -0,0 +1,2 @@
+let obj=require('./jisuan.js');
+console.log(obj.divide(8,2));
\ No newline at end of file
diff --git "a/\351\202\223\351\230\263\345\265\230/node1/jisuan.js" "b/\351\202\223\351\230\263\345\265\230/node1/jisuan.js"
new file mode 100644
index 0000000000000000000000000000000000000000..3666a898bfcdb53c1bc41c9688e6afd56dc1b6fd
--- /dev/null
+++ "b/\351\202\223\351\230\263\345\265\230/node1/jisuan.js"
@@ -0,0 +1,15 @@
+let obj={
+    add:function(x,y){
+        return parseInt(x) + parseInt(y)
+    },
+    subtract:function(x,y){
+        return parseInt(x) - parseInt(y)
+    },
+    multiply:function(x,y){
+        return parseInt(x) * parseInt(y)
+    },
+    divide:function(x,y){
+        return parseInt(x) / parseInt(y)
+    }
+}
+module.exports=obj;
\ No newline at end of file
diff --git "a/\351\202\223\351\230\263\345\265\230/node\350\256\241\347\256\227\346\227\266\351\227\264\345\267\256/demo.js" "b/\351\202\223\351\230\263\345\265\230/node\350\256\241\347\256\227\346\227\266\351\227\264\345\267\256/demo.js"
new file mode 100644
index 0000000000000000000000000000000000000000..a1382b9dd1e5568117baaa6e706ac5ff6ba708a5
--- /dev/null
+++ "b/\351\202\223\351\230\263\345\265\230/node\350\256\241\347\256\227\346\227\266\351\227\264\345\267\256/demo.js"
@@ -0,0 +1,20 @@
+let fs =require("fs");
+let time1 = new Date().getTime();
+for(let i =0;i<1000;i++){
+    let filename ="./a1/"+i+".txt";
+    fs.writeFileSync(filename,"aaa")
+
+}
+
+let time2 = new Date().getTime();
+console.log(time2-time1);
+
+let time3 = new Date().getTime();
+for(let i =0;i<1000;i++){
+    let filename ="./a2/"+i+".txt";
+    fs.writeFile(filename,"aaa",function(err){})
+
+}
+
+let time4 = new Date().getTime();
+console.log(time4-time3);
\ No newline at end of file
diff --git "a/\351\202\223\351\230\263\345\265\230/node\351\232\217\346\234\272\346\226\207\344\273\266/demo.js" "b/\351\202\223\351\230\263\345\265\230/node\351\232\217\346\234\272\346\226\207\344\273\266/demo.js"
new file mode 100644
index 0000000000000000000000000000000000000000..6eb959580ec7f5b51d6a8b6ed01902ac3adc1935
--- /dev/null
+++ "b/\351\202\223\351\230\263\345\265\230/node\351\232\217\346\234\272\346\226\207\344\273\266/demo.js"
@@ -0,0 +1,16 @@
+let fs=require("fs");
+for(let i=1;i<100;i++){
+    fs.writeFileSync("./"+i+".text",String(Math.floor(Math.random()*1001)));
+}
+let max=[];
+let min=[];
+for(let i=1;i<100;i++){
+    let data =fs.readFileSync("./"+i+".text");
+    console.log(Number(data.toString()));
+    max.push(Number(data.toString()));
+    min.push(Number(data.toString()))
+}
+
+
+console.log("最大值为"+Math.max(...max));
+console.log("最小值为"+Math.min(...min));
\ No newline at end of file
diff --git "a/\351\202\223\351\230\263\345\265\230/\345\206\205\345\256\271.txt" "b/\351\202\223\351\230\263\345\265\230/\345\206\205\345\256\271.txt"
new file mode 100644
index 0000000000000000000000000000000000000000..e69de29bb2d1d6434b8b29ae775ad8c2e48c5391