diff --git "a/\347\216\213\350\264\265\346\264\213/jisuan.js" "b/\347\216\213\350\264\265\346\264\213/jisuan.js"
new file mode 100644
index 0000000000000000000000000000000000000000..c73cfdebd7e2c013c98a7cc3ce64a7962e8f15b1
--- /dev/null
+++ "b/\347\216\213\350\264\265\346\264\213/jisuan.js"
@@ -0,0 +1,17 @@
+var a=a;
+var b=7;
+let jisuanqi={
+    jia:function(){
+        return a+b;
+    },
+    jian:function(){
+        return a-b;
+    },
+    cheng:function(){
+        return a*b;   
+    },
+    chu:function(){
+        return a/b;   
+    }
+    };
+module.exports=jisuanqi;
\ No newline at end of file
diff --git "a/\347\216\213\350\264\265\346\264\213/use.js" "b/\347\216\213\350\264\265\346\264\213/use.js"
new file mode 100644
index 0000000000000000000000000000000000000000..5f12da0d3aeedfb76b91d1f835a21dc6276f1458
--- /dev/null
+++ "b/\347\216\213\350\264\265\346\264\213/use.js"
@@ -0,0 +1,5 @@
+let obj=require('./jisuan');
+console.log('加法:'+obj.jia());
+console.log('减法:'+obj.jian());
+console.log('乘法:'+obj.cheng());
+console.log('除法:'+obj.chu());
\ No newline at end of file