diff --git a/Roadmap/26 - SOLID SRP/javascript/bernatcs.js b/Roadmap/26 - SOLID SRP/javascript/bernatcs.js
new file mode 100644
index 0000000000..1d03160609
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+++ b/Roadmap/26 - SOLID SRP/javascript/bernatcs.js	
@@ -0,0 +1,51 @@
+// ** EJERCICIO
+
+// correcta
+
+const basededatos = ['Pepe', 'Pepa']
+
+class User {
+    constructor(name, email) {
+        this.name = name;
+        this.email = email;
+    }
+
+    getUserData() {
+        return `Name: ${this.name}, Email: ${this.email}`;
+    }
+}
+
+class UserRepository {
+    save(user) {
+        basededatos.push(user.name)
+    }
+}
+
+const user = new User('Bernat', 'bernat@gmail.com');
+console.log(user.getUserData());
+
+const userRepository = new UserRepository();
+userRepository.save(user);
+console.log(basededatos)
+
+// incorrecta
+
+class User2 {
+    constructor(name, email) {
+        this.name = name;
+        this.email = email;
+    }
+
+    getUserData() {
+        return `Name: ${this.name}, Email: ${this.email}`;
+    }
+
+    saveToDatabase() {
+        basededatos.push(user2.name)
+    }
+}
+
+// Uso
+const user2 = new User2('Bernat', 'bernat@example.com');
+console.log(user2.getUserData());
+user2.saveToDatabase();
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