# Secure Login System
I'll create a complete HTML5 login system with signup, login, and homepage interfaces. This will be a self-contained frontend that can connect to your Node.js/Express/MongoDB backend.
Secure Login System
## Backend Implementation Notes
For your Node.js/Express/MongoDB backend, you'll need to implement the following:
1. Install required packages:
bash
npm install express mongoose bcryptjs cors
2. Set up a basic server structure with:
- User model with username and hashed password
- `/signup` endpoint that hashes passwords and stores users
- `/login` endpoint that verifies credentials
- Password hashing using bcrypt
3. Example user model:
javascript
const mongoose = require('mongoose');
const bcrypt = require('bcryptjs');
const userSchema = new mongoose.Schema({
username: { type: String, required: true, unique: true },
password: { type: String, required: true }
});
userSchema.pre('save', async function(next) {
if (!this.isModified('password')) return next();
this.password = await bcrypt.hash(this.password, 12);
next();
});
module.exports = mongoose.model('User', userSchema);
The frontend code provided is complete and ready to use. It includes simulated API responses for demonstration purposes. To connect it to your actual backend, uncomment and modify the fetch requests in the form submission handlers.