---
status: APPROVED
title: "JavaScript Full-Stack User Management System"
description: "Complete user authentication and profile system using Node.js, Express, and vanilla JavaScript"
author: "AMP"
created: "2024-01-12"
scope: "tests/lang/javascript/**"
---
# JavaScript Full-Stack Implementation Plan
## Overview
Build a complete user management system with JWT authentication, session handling, and profile management using JavaScript/Node.js on backend and ES6+ on frontend.
## Architecture
### Backend (Node.js + Express)
- User registration and authentication endpoints
- JWT token generation and verification
- Password hashing with bcrypt
- MongoDB/PostgreSQL integration
- RESTful API design
### Frontend (Vanilla JavaScript)
- User login/signup forms with validation
- Session management with localStorage
- Profile dashboard with CRUD operations
- Real-time notification system using WebSockets
- Template literal-based UI rendering
## Key Components
### 1. Authentication Service
- User registration with email validation
- Login with password verification
- JWT token generation with expiration
- Token refresh mechanism
- Logout with token invalidation
### 2. User Profile Management
- Update profile information
- Change password functionality
- Profile picture upload handling
- Account deletion with data purge
- Activity logging
### 3. Session Management
- Session token storage in Redis
- Session timeout configuration
- Concurrent session limits
- Device tracking
### 4. Security Features
- CORS configuration
- Rate limiting on auth endpoints
- Password complexity enforcement
- Email verification before account activation
- Two-factor authentication support
## Database Schema
- Users table with hashed passwords
- Sessions table for tracking active sessions
- Audit log table for tracking changes
- Profile pictures stored in cloud storage
## Deliverables
1. Express server with authentication routes
2. Frontend login/signup pages with JavaScript validation
3. User dashboard with profile management
4. API documentation with examples
5. Database migrations and seed scripts
6. Comprehensive error handling and logging
