diff --git "a/\346\210\221\347\232\204\344\275\234\344\270\232/2022.2.21/.vscode/settings.json" "b/\346\210\221\347\232\204\344\275\234\344\270\232/2022.2.21/.vscode/settings.json"
new file mode 100644
index 0000000000000000000000000000000000000000..3b664107303df336bab8010caad42ddaed24550e
--- /dev/null
+++ "b/\346\210\221\347\232\204\344\275\234\344\270\232/2022.2.21/.vscode/settings.json"
@@ -0,0 +1,3 @@
+{
+    "git.ignoreLimitWarning": true
+}
\ No newline at end of file
diff --git "a/\346\210\221\347\232\204\344\275\234\344\270\232/2022.2.21/demo01.js" "b/\346\210\221\347\232\204\344\275\234\344\270\232/2022.2.21/demo01.js"
new file mode 100644
index 0000000000000000000000000000000000000000..59034cc6d4a4209dd825021430d19f1f0042b0e9
--- /dev/null
+++ "b/\346\210\221\347\232\204\344\275\234\344\270\232/2022.2.21/demo01.js"
@@ -0,0 +1,22 @@
+let a = 1;
+let b = 2;
+
+function jia(){
+    console.log(a+b);
+}
+function jian(){
+    console.log(b-a);
+}
+function cheng(){
+    console.log(a*b);
+}
+function chu(){
+    console.log(b/a);
+}
+
+module.exports = {
+    jia : jia,
+    jian : jian,
+    cheng : cheng,
+    chu : chu
+}
\ No newline at end of file
diff --git "a/\346\210\221\347\232\204\344\275\234\344\270\232/2022.2.21/demo02.js" "b/\346\210\221\347\232\204\344\275\234\344\270\232/2022.2.21/demo02.js"
new file mode 100644
index 0000000000000000000000000000000000000000..a2969b6e543a30f2aa9fd0da02d2607a3acdfb89
--- /dev/null
+++ "b/\346\210\221\347\232\204\344\275\234\344\270\232/2022.2.21/demo02.js"
@@ -0,0 +1,6 @@
+let demo01 = require('./demo01');
+
+demo01.jia();
+demo01.jian();
+demo01.cheng();
+demo01.chu();