diff --git a/nodejs/package-example/index.js b/nodejs/package-example/index.js
new file mode 100644
index 00000000..e4981caa
--- /dev/null
+++ b/nodejs/package-example/index.js
@@ -0,0 +1,3 @@
+const randomColor = require('randomcolor');
+
+console.log(randomColor());
\ No newline at end of file
diff --git a/nodejs/package-example/package-lock.json b/nodejs/package-example/package-lock.json
new file mode 100644
index 00000000..65c6163a
--- /dev/null
+++ b/nodejs/package-example/package-lock.json
@@ -0,0 +1,28 @@
+{
+  "name": "package-example",
+  "version": "1.0.0",
+  "lockfileVersion": 2,
+  "requires": true,
+  "packages": {
+    "": {
+      "name": "package-example",
+      "version": "1.0.0",
+      "license": "ISC",
+      "dependencies": {
+        "randomcolor": "^0.6.2"
+      }
+    },
+    "node_modules/randomcolor": {
+      "version": "0.6.2",
+      "resolved": "https://registry.npmjs.org/randomcolor/-/randomcolor-0.6.2.tgz",
+      "integrity": "sha512-Mn6TbyYpFgwFuQ8KJKqf3bqqY9O1y37/0jgSK/61PUxV4QfIMv0+K2ioq8DfOjkBslcjwSzRfIDEXfzA9aCx7A=="
+    }
+  },
+  "dependencies": {
+    "randomcolor": {
+      "version": "0.6.2",
+      "resolved": "https://registry.npmjs.org/randomcolor/-/randomcolor-0.6.2.tgz",
+      "integrity": "sha512-Mn6TbyYpFgwFuQ8KJKqf3bqqY9O1y37/0jgSK/61PUxV4QfIMv0+K2ioq8DfOjkBslcjwSzRfIDEXfzA9aCx7A=="
+    }
+  }
+}
diff --git a/nodejs/package-example/package.json b/nodejs/package-example/package.json
new file mode 100644
index 00000000..97d9e083
--- /dev/null
+++ b/nodejs/package-example/package.json
@@ -0,0 +1,15 @@
+{
+  "name": "package-example",
+  "version": "1.0.0",
+  "description": "",
+  "main": "index.js",
+  "scripts": {
+    "test": "echo \"Error: no test specified\" && exit 1",
+    "start": "node index.js"
+  },
+  "author": "",
+  "license": "ISC",
+  "dependencies": {
+    "randomcolor": "^0.6.2"
+  }
+}
diff --git a/nodejs/.gitignore b/nodejs/practice/.gitignore
similarity index 100%
rename from nodejs/.gitignore
rename to nodejs/practice/.gitignore
diff --git a/nodejs/main.js b/nodejs/practice/main.js
similarity index 100%
rename from nodejs/main.js
rename to nodejs/practice/main.js
diff --git a/nodejs/math-tools.js b/nodejs/practice/math-tools.js
similarity index 100%
rename from nodejs/math-tools.js
rename to nodejs/practice/math-tools.js
diff --git a/nodejs/new b/nodejs/practice/new
similarity index 100%
rename from nodejs/new
rename to nodejs/practice/new
diff --git a/nodejs/package-lock.json b/nodejs/practice/package-lock.json
similarity index 100%
rename from nodejs/package-lock.json
rename to nodejs/practice/package-lock.json
diff --git a/nodejs/package.json b/nodejs/practice/package.json
similarity index 100%
rename from nodejs/package.json
rename to nodejs/practice/package.json
diff --git a/nodejs/test.js b/nodejs/practice/test.js
similarity index 100%
rename from nodejs/test.js
rename to nodejs/practice/test.js
diff --git a/nodejs/practice2/calc.js b/nodejs/practice2/calc.js
new file mode 100644
index 00000000..04746b0c
--- /dev/null
+++ b/nodejs/practice2/calc.js
@@ -0,0 +1,8 @@
+const add = (a, b) => a + b;
+const sub = (a, b) => a - b;
+
+module.exports = {
+  moduleName: "calc module",
+  add: add, 
+  sub: sub,
+}
\ No newline at end of file
diff --git a/nodejs/practice2/index.js b/nodejs/practice2/index.js
new file mode 100644
index 00000000..758288bf
--- /dev/null
+++ b/nodejs/practice2/index.js
@@ -0,0 +1,4 @@
+const calc = require("./calc");
+
+console.log(calc.add(3, 4));
+console.log(calc.sub(10, 4));
\ No newline at end of file