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Add a loading spinner for search or sorting processes
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Add a loading spinner for search or sorting processes
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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>Scaler Leaderboard</title>
<style>
/* General Styles */
body,
html {
margin: 0;
padding: 0;
font-family: Arial, sans-serif;
transition: background-color 0.3s, color 0.3s;
}
.container {
max-width: 800px;
margin: 0 auto;
padding: 20px;
opacity: 0;
transition: opacity 1s ease-in-out;
}
/* Header */
h1 {
text-align: center;
margin-bottom: 20px;
}
/* Toggle Button */
.dark-mode-toggle {
cursor: pointer;
padding: 10px 15px;
border: none;
background-color: #4caf50;
color: white;
border-radius: 4px;
transition: all 0.3s ease;
}
.dark-mode-toggle:hover {
background-color: #388e3c;
transform: scale(1.05);
}
/* Search Bar */
.search-container input {
padding: 10px;
width: 70%;
font-size: 16px;
border: none;
border-radius: 4px;
}
/* Table */
table {
width: 100%;
border-collapse: collapse;
background-color: #1a1a1a;
box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
border-radius: 8px;
overflow: hidden;
transition: background-color 0.3s;
}
th,
td {
padding: 12px;
text-align: left;
border-bottom: 1px solid #333;
}
th {
background-color: #2c2c2c;
font-weight: bold;
cursor: pointer;
position: relative;
}
th.sorted-asc::after,
th.sorted-desc::after {
content: "▲";
font-size: 10px;
position: absolute;
right: 10px;
transform: rotate(0deg);
transition: transform 0.2s;
}
th.sorted-desc::after {
transform: rotate(180deg);
}
/* Row Hover Effect */
tr:hover {
background-color: #333;
transition: background-color 0.3s ease;
}
/* Tooltip */
.rating:hover::after {
content: attr(data-tooltip);
position: absolute;
bottom: 100%;
left: 50%;
transform: translateX(-50%);
background-color: rgba(0, 0, 0, 0.7);
color: #fff;
padding: 5px;
border-radius: 4px;
white-space: nowrap;
font-size: 12px;
margin-bottom: 8px;
}
/* Dark Mode Styles */
body.dark-mode {
background-color: white;
color: black;
}
body.dark-mode .dark-mode-toggle {
background-color: #f44336;
color: black;
}
/* Rating Colors */
.gray {
color: #a0a0a0;
}
.green {
color: #4caf50;
}
.blue {
color: #2196f3;
}
.yellow {
color: #ffc107;
}
.red {
color: #f44336;
}
.purple {
color: #9c27b0;
}
/* Spinner Styles */
.spinner {
display: none;
position: fixed;
top: 50%;
left: 50%;
transform: translate(-50%, -50%);
border: 8px solid #f3f3f3;
border-top: 8px solid #3498db;
border-radius: 50%;
width: 60px;
height: 60px;
animation: spin 1s linear infinite;
}
@keyframes spin {
0% {
transform: rotate(0deg);
}
100% {
transform: rotate(360deg);
}
}
</style>
</head>
<body>
<div class="container">
<h1>Scaler Leaderboard</h1>
<div class="toggle-container">
<button class="dark-mode-toggle" onclick="toggleDarkMode()">Toggle Dark Mode</button>
<div class="search-container">
<input type="text" id="searchInput" placeholder="Search by name..." aria-label="Search by name" onkeyup="filterLeaderboard()">
</div>
</div>
<table aria-label="Leaderboard">
<thead>
<tr>
<th onclick="sortTable(0)">Name</th>
<th onclick="sortTable(1)">CodeChef</th>
<th onclick="sortTable(2)">Codeforces</th>
<th onclick="sortTable(3)">AtCoder</th>
<th onclick="sortTable(4)">LeetCode</th>
</tr>
</thead>
<tbody id="leaderboardBody"></tbody>
</table>
</div>
<!-- Spinner Element -->
<div class="spinner" id="loadingSpinner"></div>
<script>
// JavaScript Enhancements
const users = [
{ name: "Alice", codechef: 1500, codeforces: 1200, atcoder: 800, leetcode: 2000 },
{ name: "Bob", codechef: 2000, codeforces: 1800, atcoder: 1600, leetcode: 2500 },
{ name: "Charlie", codechef: 2500, codeforces: 2200, atcoder: 2000, leetcode: 3000 },
{ name: "David", codechef: 1800, codeforces: 1600, atcoder: 1400, leetcode: 2200 },
{ name: "Eve", codechef: 3000, codeforces: 2800, atcoder: 2400, leetcode: 3500 },
];
let ascendingOrder = true;
function showSpinner() {
document.getElementById("loadingSpinner").style.display = "block";
}
function hideSpinner() {
document.getElementById("loadingSpinner").style.display = "none";
}
function getRatingColor(rating) {
if (rating < 1200) return "gray";
if (rating < 1400) return "green";
if (rating < 1600) return "blue";
if (rating < 1900) return "yellow";
if (rating < 2100) return "red";
return "purple";
}
function populateLeaderboard() {
const tbody = document.getElementById("leaderboardBody");
tbody.innerHTML = "";
users.forEach(user => {
const row = document.createElement("tr");
row.innerHTML = `
<td>${user.name}</td>
<td><span class="rating ${getRatingColor(user.codechef)}" data-tooltip="CodeChef Rating">${user.codechef}</span></td>
<td><span class="rating ${getRatingColor(user.codeforces)}" data-tooltip="Codeforces Rating">${user.codeforces}</span></td>
<td><span class="rating ${getRatingColor(user.atcoder)}" data-tooltip="AtCoder Rating">${user.atcoder}</span></td>
<td><span class="rating ${getRatingColor(user.leetcode)}" data-tooltip="LeetCode Rating">${user.leetcode}</span></td>
`;
tbody.appendChild(row);
});
hideSpinner();
}
function toggleDarkMode() {
document.body.classList.toggle("dark-mode");
}
function sortTable(columnIndex) {
showSpinner();
setTimeout(() => {
ascendingOrder = !ascendingOrder;
const fields = ["name", "codechef", "codeforces", "atcoder", "leetcode"];
users.sort((a, b) => {
const aValue = a[fields[columnIndex]];
const bValue = b[fields[columnIndex]];
return ascendingOrder ? (aValue < bValue ? -1 : 1) : (aValue > bValue ? -1 : 1);
});
populateLeaderboard();
}, 300);
}
function filterLeaderboard() {
showSpinner();
setTimeout(() => {
const query = document.getElementById("searchInput").value.toLowerCase();
const tbody = document.getElementById("leaderboardBody");
tbody.innerHTML = "";
users
.filter(user => user.name.toLowerCase().includes(query))
.forEach(user => {
const row = document.createElement("tr");
row.innerHTML = `
<td>${user.name}</td>
<td><span class="rating ${getRatingColor(user.codechef)}">${user.codechef}</span></td>
<td><span class="rating ${getRatingColor(user.codeforces)}">${user.codeforces}</span></td>
<td><span class="rating ${getRatingColor(user.atcoder)}">${user.atcoder}</span></td>
<td><span class="rating ${getRatingColor(user.leetcode)}">${user.leetcode}</span></td>
`;
tbody.appendChild(row);
});
hideSpinner();
}, 300);
}
window.addEventListener("load", () => {
document.querySelector(".container").style.opacity = "1";
populateLeaderboard();
});
</script>
</body>
</html>