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index.html
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<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<title>Random Number Generator</title>
<style>
body {
margin: 0;
padding: 20px;
font-family: Arial, sans-serif;
background-color: #f0f0f0;
display: flex;
flex-direction: column;
align-items: center;
height: 100vh;
overflow: auto;
}
h1 {
font-size: 24px;
margin-bottom: 20px;
}
.input-container {
margin-bottom: 20px;
text-align: center;
}
label {
font-size: 20px;
margin-right: 10px;
}
input {
font-size: 20px;
padding: 5px;
width: 150px;
}
button {
font-size: 20px;
padding: 10px 20px;
margin: 10px;
cursor: pointer;
background-color: #4CAF50;
color: white;
border: none;
border-radius: 5px;
}
button:hover {
background-color: #45a049;
}
#result {
font-size: 120px; /* Large font for HD TV visibility */
margin: 20px 0;
text-align: center;
}
#usedNumbers {
font-size: 16px;
margin-top: 20px;
text-align: center;
word-wrap: break-word;
max-width: 90%;
}
</style>
</head>
<body>
<h1>Random Number Generator</h1>
<div class="input-container">
<label for="minNum">Minimum Number:</label>
<input type="number" id="minNum" value="1">
<br>
<label for="maxNum">Maximum Number:</label>
<input type="number" id="maxNum" value="100">
</div>
<button onclick="generateNumber()">Generate</button>
<button onclick="resetNumbers()">Reset</button>
<div id="result">Result: </div>
<div id="usedNumbers">Used Numbers: None</div>
<script>
let usedNumbers = [];
function generateNumber() {
const minNum = parseInt(document.getElementById('minNum').value);
const maxNum = parseInt(document.getElementById('maxNum').value);
if (isNaN(minNum) || isNaN(maxNum)) {
alert("Please enter valid numbers");
return;
}
if (minNum >= maxNum) {
alert("Minimum must be less than Maximum");
return;
}
const range = maxNum - minNum + 1;
if (usedNumbers.length >= range) {
alert("All possible numbers have been used! Please reset or change range.");
return;
}
let randomNum;
do {
randomNum = Math.floor(Math.random() * (maxNum - minNum + 1)) + minNum;
} while (usedNumbers.includes(randomNum));
usedNumbers.push(randomNum);
document.getElementById('result').textContent = `Result: ${randomNum}`;
document.getElementById('usedNumbers').textContent =
`Used Numbers: ${usedNumbers.join(', ')}`;
// Enter full-screen mode if not already
if (!document.fullscreenElement) {
document.documentElement.requestFullscreen().catch(err => {
console.log(`Error attempting to enable full-screen mode: ${err.message}`);
});
}
}
function resetNumbers() {
usedNumbers = [];
document.getElementById('result').textContent = "Result: ";
document.getElementById('usedNumbers').textContent = "Used Numbers: None";
alert("Number history has been reset");
}
// Exit full-screen with Escape key (handled by browser, no extra code needed)
</script>
</body>
</html>