Practical – 117.1 : Check Given Number is Prime or Not
Program Code :
<!DOCTYPE html>
<html>
<head>
<title>Prime Number Checker</title>
<style>
body {
font-family: Arial;
text-align: center;
margin-top: 50px;
}
input, button {
font-size: 18px;
margin: 5px;
padding: 8px;
}
#result {
font-weight: bold;
margin-top: 15px;
}
</style>
</head>
<body>
<h2>Check Prime Number</h2>
<input type=”number” id=”number” placeholder=”Enter a number”>
<button onclick=”checkPrime()”>Check</button>
<div id=”result”></div>
<script>
function checkPrime() {
const num = parseInt(document.getElementById(“number”).value);
let isPrime = true;
if (num <= 1) {
isPrime = false;
} else {
for (let i = 2; i <= Math.sqrt(num); i++) {
if (num % i === 0) {
isPrime = false;
break;
}
}
}
const result = document.getElementById(“result”);
if (isPrime) {
result.textContent = num + ” is a Prime Number.”;
result.style.color = “green”;
} else {
result.textContent = num + ” is Not a Prime Number.”;
result.style.color = “red”;
}
}
</script>
</body>
</html>
