Roulette Predictor
About this app
Predict the next number in roulette
Roulette Predictor Roulette Predictor Enter the number that was spun: Predict
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Source
<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<meta http-equiv="X-UA-Compatible" content="IE=edge">
<meta name="viewport" content="width=device-width,initial-scale=1,viewport-fit=cover">
<title>Roulette Predictor</title>
<meta name="description" content="Predict the next number in roulette">
<meta name="keywords" content="roulette, predictor, number prediction">
<link rel="canonical" href="https://calculator.tools/app/roulette-predictor-1894/">
<style>
* { box-sizing: border-box; }
body { margin: 0; font-family: system-ui, -apple-system, sans-serif; }
.container { max-width: 500px; margin: 0 auto; padding: 24px 16px 48px; }
h1 { text-align: center; font-size: 1.75rem; margin: 0 0 1.25rem; }
.form-group { margin-bottom: 16px; }
label { display: block; margin-bottom: 8px; }
input[type=number] {
width: 100%; font-size: 16px; padding: 12px; border: 1px solid #ced4da;
border-radius: 8px; -webkit-appearance: none;
}
button#predict-button {
display: block; width: 100%; min-height: 48px; margin-top: 8px;
font-size: 18px; font-weight: 600; color: #fff; background: #0d6efd;
border: 0; border-radius: 10px; cursor: pointer; touch-action: manipulation;
}
button#predict-button:active { background: #0b5ed7; }
#prediction-result { margin-top: 1.25rem; text-align: center; font-size: 1.25rem; }
</style>
</head>
<body>
<div id="main-container" class="container">
<h1>Roulette Predictor</h1>
<div class="form-group">
<label for="spin-input">Enter the number that was spun:</label>
<input type="number" id="spin-input" min="0" max="36" inputmode="numeric" enterkeyhint="done">
</div>
<button type="button" id="predict-button">Predict</button>
<div id="prediction-result"></div>
</div>
<script>
var spins = [];
function predictNextNumber() {
return Math.floor(Math.random() * 37);
}
function runPredict() {
var raw = document.getElementById('spin-input').value;
var spin = parseInt(raw, 10);
if (isNaN(spin) || spin < 0 || spin > 36) {
alert('Please enter a valid number between 0 and 36.');
return;
}
spins.push(spin);
document.getElementById('prediction-result').textContent =
'Next predicted number: ' + predictNextNumber();
document.getElementById('spin-input').value = '';
}
document.getElementById('predict-button').addEventListener('click', runPredict);
document.getElementById('predict-button').addEventListener('touchend', function (e) {
e.preventDefault();
runPredict();
}, { passive: false });
document.getElementById('spin-input').addEventListener('keydown', function (e) {
if (e.key === 'Enter') runPredict();
});
</script>
</body>
</html>
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