Football Elo Rating Tracker
About this app
Track and calculate Elo ratings for football teams. Enter match results and see how they affect the teams' ratings in real-time.
Football Elo Rating Tracker Football Elo Rating Tracker Team 1 Name Team 1 Current Elo Rating Team 1 Score Team 2 Name Team 2 Current Elo Rating Team 2 Score Calculate Ratings
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Source
<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">
<title>Football Elo Rating Tracker</title>
<meta name="description" content="Track and calculate Elo ratings for football teams. Enter match results and see how they affect the teams' ratings in real-time.">
<meta name="keywords" content="Elo rating, football, soccer, ratings tracker, match results">
<!-- Libraries -->
<script src="https://ajax.googleapis.com/ajax/libs/jquery/3.6.0/jquery.min.js" crossorigin="anonymous"></script>
<link rel="stylesheet" href="https://cdn.jsdelivr.net/npm/bootstrap@5.3.3/dist/css/bootstrap.min.css" crossorigin="anonymous">
<script src="https://cdn.jsdelivr.net/npm/bootstrap@5.3.3/dist/js/bootstrap.min.js" crossorigin="anonymous"></script>
<link rel="stylesheet" href="https://cdn.jsdelivr.net/npm/@fortawesome/fontawesome-free@6.6.0/css/fontawesome.min.css" crossorigin="anonymous">
<script type="text/javascript">
try {
// App Javascript Goes Here. Place your entire script content inside the try block for error handling.
function calculateElo(currentRating, opponentRating, score, opponentScore, k_factor=30) {
const expectedScore = 1 / (1 + Math.pow(10, (opponentRating - currentRating) / 400));
return Math.round(currentRating + k_factor * (score - expectedScore));
}
$(document).ready(function() {
$('#submit-form').on('submit', function(e) {
e.preventDefault();
const team1 = $('#team1').val().trim();
const rating1 = parseFloat($('#rating1').val());
const team2 = $('#team2').val().trim();
const rating2 = parseFloat($('#rating2').val());
const score1 = parseInt($('#score1').val());
const score2 = parseInt($('#score2').val());
if (isNaN(rating1) || isNaN(rating2)) {
alert('Please enter valid ratings.');
return;
}
if (score1 > score2) {
const newRating1 = calculateElo(rating1, rating2, 1, 0);
const newRating2 = calculateElo(rating2, rating1, 0, 1);
$('#result').html(`<h4>Result:</h4><p>${team1} wins! (${team1} new rating: ${newRating1}, ${team2} new rating: ${newRating2})</p>`);
} else if (score1 < score2) {
const newRating1 = calculateElo(rating1, rating2, 0, 1);
const newRating2 = calculateElo(rating2, rating1, 1, 0);
$('#result').html(`<h4>Result:</h4><p>${team2} wins! (${team1} new rating: ${newRating1}, ${team2} new rating: ${newRating2})</p>`);
} else {
const newRating1 = calculateElo(rating1, rating2, 0.5, 0.5);
const newRating2 = calculateElo(rating2, rating1, 0.5, 0.5);
$('#result').html(`<h4>Result:</h4><p>It's a draw! (${team1} new rating: ${newRating1}, ${team2} new rating: ${newRating2})</p>`);
}
});
});
} catch (error) {
throw error;
}
</script>
<style>
body {
background: linear-gradient(90deg, #4e54c8, #8f94fb);
color: #fff;
}
#main-container {
margin-top: 50px;
border-radius: 10px;
background: rgba(255, 255, 255, 0.1);
padding: 30px;
box-shadow: 0 4px 10px rgba(0, 0, 0, 0.2);
}
input, button {
border-radius: 5px;
margin: 5px 0;
}
button {
background-color: #fa4e3c;
border: none;
color: #fff;
}
h1, h4 {
text-align: center;
}
.result {
margin-top: 20px;
text-align: center;
}
</style>
</head>
<body>
<div id="main-container" class="container">
<h1>Football Elo Rating Tracker</h1>
<form id="submit-form">
<div class="mb-3">
<label for="team1" class="form-label">Team 1 Name</label>
<input type="text" class="form-control" id="team1" required>
</div>
<div class="mb-3">
<label for="rating1" class="form-label">Team 1 Current Elo Rating</label>
<input type="number" class="form-control" id="rating1" required>
</div>
<div class="mb-3">
<label for="score1" class="form-label">Team 1 Score</label>
<input type="number" class="form-control" id="score1" min="0" required>
</div>
<div class="mb-3">
<label for="team2" class="form-label">Team 2 Name</label>
<input type="text" class="form-control" id="team2" required>
</div>
<div class="mb-3">
<label for="rating2" class="form-label">Team 2 Current Elo Rating</label>
<input type="number" class="form-control" id="rating2" required>
</div>
<div class="mb-3">
<label for="score2" class="form-label">Team 2 Score</label>
<input type="number" class="form-control" id="score2" min="0" required>
</div>
<button type="submit" class="btn btn-primary w-100">Calculate Ratings</button>
</form>
<div id="result" class="result"></div>
</div>
</body>
</html>
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