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Creating a Call of Duty (COD) calculator website involves several steps, including setting up the front-end, back-end, and database (if needed). Below is a simplified example using HTML, CSS, and JavaScript for the front-end, and Node.js with Express for the back-end. This example will calculate the total score based on kills, deaths, and assists.
### 1. Front-End (HTML, CSS, JavaScript)
**index.html**
```html
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<title>COD Calculator</title>
<link rel="stylesheet" href="styles.css">
</head>
<body>
<div class="container">
<h1>COD Score Calculator</h1>
<form id="codForm">
<label for="kills">Kills:</label>
<input type="number" id="kills" name="kills" required>
<label for="deaths">Deaths:</label>
<input type="number" id="deaths" name="deaths" required>
<label for="assists">Assists:</label>
<input type="number" id="assists" name="assists" required>
<button type="submit">Calculate</button>
</form>
<h2 id="result"></h2>
</div>
<script src="script.js"></script>
</body>
</html>
```
**styles.css**
```css
body {
font-family: Arial, sans-serif;
background-color: #f4f4f4;
display: flex;
justify-content: center;
align-items: center;
height: 100vh;
margin: 0;
}
.container {
background-color: #fff;
padding: 20px;
border-radius: 8px;
box-shadow: 0 0 10px rgba(0, 0, 0, 0.1);
text-align: center;
}
label {
display: block;
margin-bottom: 8px;
}
input {
width: 100%;
padding: 8px;
margin-bottom: 16px;
border: 1px solid #ccc;
border-radius: 4px;
}
button {
padding: 10px 20px;
background-color: #007bff;
color: #fff;
border: none;
border-radius: 4px;
cursor: pointer;
}
button:hover {
background-color: #0056b3;
}
#result {
margin-top: 20px;
}
```
**script.js**
```javascript
document.getElementById('codForm').addEventListener('submit', function(event) {
event.preventDefault();
const kills = parseInt(document.getElementById('kills').value);
const deaths = parseInt(document.getElementById('deaths').value);
const assists = parseInt(document.getElementById('assists').value);
fetch('/calculate', {
method: 'POST',
headers: {
'Content-Type': 'application/json'
},
body: JSON.stringify({ kills, deaths, assists })
})
.then(response => response.json())
.then(data => {
document.getElementById('result').innerText = `Total Score: ${data.totalScore}`;
})
.catch(error => console.error('Error:', error));
});
```
### 2. Back-End (Node.js, Express)
**server.js**
```javascript
const express = require('express');
const bodyParser = require('body-parser');
const app = express();
const port = 3000;
app.use(bodyParser.json());
app.use(express.static('public'));
app.post('/calculate', (req, res) => {
const { kills, deaths, assists } = req.body;
const totalScore = (kills * 100) + (assists * 50) - (deaths * 25);
res.json({ totalScore });
});
app.listen(port, () => {
console.log(`Server running at http://localhost:${port}`);
});
```
### 3. Directory Structure
```
cod-calculator/
│
├── public/
│ ├── index.html
│ ├── styles.css
│ └── script.js
│
└── server.js
```
### 4. Running the Application
1. **Install Node.js**: Make sure you have Node.js installed on your machine.
2. **Initialize a Node.js project**: Run `npm init -y` in the project directory.
3. **Install Express**: Run `npm install express body-parser`.
4. **Run the server**: Run `node server.js`.
5. **Access the website**: Open your browser and go to `http://localhost:3000`.
### 5. Explanation
- **Front-End**: The HTML form collects the number of kills, deaths, and assists. When the form is submitted, JavaScript sends this data to the server using a POST request.
- **Back-End**: The server calculates the total score based on the formula `(kills * 100) + (assists * 50) - (deaths * 25)` and sends the result back to the front-end.
- **Styling**: Basic CSS is used to style the form and result display.
This is a basic example to get you started. You can expand it by adding more features, such as saving scores to a database, user authentication, or more complex calculations.
