Write a program to check whether a number is divisible by 7 or not
here's an example program that checks whether a number is divisible by 7 or not using HTML, CSS, JavaScript, and Python:
1. Create the HTML structure in a file named `divisibility.html`:
html
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<link rel="stylesheet" href="style.css">
<title>Divisibility Checker</title>
</head>
<body>
<div class="container">
<h1>Divisibility Checker</h1>
<label for="numberInput">Enter a number:</label>
<input type="number" id="numberInput">
<button id="checkButton">Check Divisibility by 7</button>
<p id="result"></p>
</div>
<script src="script.js"></script>
</body>
</html>2. Create the CSS styling in a file named `style.css`:
css
body {
font-family: Arial, sans-serif;
background-color: #f4f4f4;
margin: 0;
padding: 0;
display: flex;
justify-content: center;
align-items: center;
height: 100vh;
}
.container {
text-align: center;
background-color: #fff;
padding: 20px;
border-radius: 5px;
box-shadow: 0px 0px 10px rgba(0, 0, 0, 0.2);
}
button {
padding: 10px 20px;
background-color: #007bff;
color: #fff;
border: none;
border-radius: 5px;
cursor: pointer;
}
button:hover {
background-color: #0056b3;
}3. Create the JavaScript logic in a file named `script.js`:
javascript
document.addEventListener("DOMContentLoaded", function () {
const numberInput = document.getElementById("numberInput");
const checkButton = document.getElementById("checkButton");
const result = document.getElementById("result");
checkButton.addEventListener("click", function () {
const number = parseInt(numberInput.value);
if (isNaN(number)) {
result.textContent = "Please enter a valid number.";
return;
}
if (number % 7 === 0) {
result.textContent = `${number} is divisible by 7.`;
} else {
result.textContent = `${number} is not divisible by 7.`;
}
});
});4. Run a Python web server to host the files. Open your terminal and navigate to the directory containing the HTML, CSS, and JavaScript files, then run the following command:
python -m http.server
5. Open your web browser and go to `http://localhost:8000/divisibility.html`. You should see the divisibility checker form. Enter a number and click the "Check Divisibility by 7" button to see the result.
Output:
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