Brtest Tutorial
Frontend vs Backend
When you visit a website, there are two main parts working together:
- Frontend � What you see and interact with in your browser.
- Backend � What happens behind the scenes on the server.
Understanding the difference between the frontend and backend helps you see how web developers work together to create complete websites.
Tip: You don�t need to learn backend right away � start with frontend development (HTML, CSS, and JavaScript). That�s what this tutorial focuses on first.
The Frontend (Client Side)
The frontend is everything that happens in the web browser. It�s the part users can see and interact with: text, images, buttons, forms, menus, and animations.
Frontend developers use:
HTMLto create the page structureCSSto style and design the layoutJavaScriptto add interactivity
Example
Here is a simple frontend login form (no backend yet):
<h2>Login Form</h2>
<form>
<label>Username:</label>
<input type="text"><br><br>
<label>Password:</label>
<input type="password"><br><br>
<button>Login</button>
</form>
Try it Yourself »
Note: This example only shows the frontend. The button doesn�t actually log you in because there�s no backend logic yet.
The Backend (Server Side)
The backend is where the website�s data and logic live. It runs on a web server and handles tasks like:
- Storing and retrieving data (like usernames, passwords, posts, or products)
- Handling user authentication and permissions
- Processing forms and sending responses back to the frontend
Backend developers use server-side languages like:
- Python (with frameworks like Django or Flask)
- PHP (used in WordPress)
- Node.js (JavaScript on the server)
- Java or C# (for large-scale applications)
Example
This diagram shows how frontend and backend communicate:
Browser (Frontend) → sends a form request → Server (Backend)
Server → checks the data → sends a response (HTML or JSON)
Browser → updates the page with the result
How They Work Together
When you log in to a website or post a comment:
- The frontend displays the form and collects user input.
- The backend checks the input and saves it to a database.
- The frontend then shows a success message or error based on the backend response.
Example
A very simplified frontend + backend flow:
Frontend → "Submit login info"
Backend → "Checking credentials..."
Backend → "Login successful!"
Frontend → Displays "Welcome back!"
Analogy: The frontend is the restaurant menu. The backend is the kitchen that prepares your food.
Full-Stack Development
A Full-Stack Developer understands both frontend and backend development � how to design what users see and how to make it work behind the scenes.
In this tutorial, you�ll first become comfortable with the frontend:
- HTML (Structure)
- CSS (Style)
- JavaScript (Behavior)
Later, you can explore backend technologies (like databases, servers, and APIs) to become a full-stack web developer.
Summary
- Frontend: Everything you see and interact with (HTML, CSS, JS)
- Backend: The behind-the-scenes code that stores and manages data
- Both parts work together to create a complete website
Next, you will learn what tools you need to start coding � your web browser, code editor, and how to set up your first project folder.
