Prime Number বা মৌলিক সংখ্যা হলো এমন একটি ধনাত্মক পূর্ণসংখ্যা যা শুধুমাত্র 1 এবং নিজেই দ্বারা বিভাজ্য।
HTML,CSS এবং Javascript ব্যবহার করে একটি সাধারণ Prime Number কিনা দেখতে পারি -
HTML (prime.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="styles.css">
<title>Prime Number Checker</title>
</head>
<body>
<div class="container">
<label for="number">Enter a number:</label>
<input type="number" id="number">
<button id="checkBtn">Check Prime</button>
<p id="result"></p>
</div>
<script src="script.js"></script>
</body>
</html>
CSS(styles.css):
body {
font-family: Arial, sans-serif;
display: flex;
justify-content: center;
align-items: center;
height: 100vh;
margin: 0;
}
.container {
text-align: center;
border: 1px solid #ccc;
padding: 20px;
border-radius: 5px;
background-color: #f7f7f7;
}
input {
padding: 5px;
margin-right: 10px;
border: 1px solid #ccc;
border-radius: 3px;
}
button {
padding: 5px 10px;
border: none;
background-color: #007bff;
color: white;
border-radius: 3px;
cursor: pointer;
}
button:hover {
background-color: #0056b3;
}
JavaScript (script.js):
document.addEventListener("DOMContentLoaded", function () {
const numberInput = document.getElementById("number");
const checkBtn = document.getElementById("checkBtn");
const resultElement = document.getElementById("result");
checkBtn.addEventListener("click", function () {
const number = parseInt(numberInput.value);
if (isPrime(number)) {
resultElement.textContent = `${number} is a prime number.`;
} else {
resultElement.textContent = `${number} is not a prime number.`;
}
});
function isPrime(num) {
if (num <= 1) {
return false;
}
for (let i = 2; i <= Math.sqrt(num); i++) {
if (num % i === 0) {
return false;
}
}
return true;
}
});
Comments
Post a Comment