```
**Explanation of Tags:**
1. **``**: The most important SEO tag. It's concise, includes the core topic (`Natural Frequency`, `Mass-Spring System`, `SDOF`), the exam context (`GATE ME 2017`), and indicates it's a solution (`Solved Question`).
2. **`<meta name="description">`**: A brief summary of the page's content. It's designed to entice clicks from search results. It includes keywords, the specific question number, and the promise of a solution.
3. **`<meta name="keywords">`**: While less impactful for ranking directly by major search engines now, it still provides contextual information and can be useful for niche search engines or internal site search. I've included a comprehensive list.
4. **`<meta name="author">`**: Identifies the creator of the content.
5. **`<link rel="canonical">`**: Tells search engines the preferred version of a URL, preventing duplicate content issues.
6. **Open Graph Tags (`og:` prefix)**: These tags control how your content appears when shared on social media platforms like Facebook, LinkedIn, etc.
* `og:type`: Specifies the type of content (e.g., `article`, `website`).
* `og:url`: The canonical URL of the page.
* `og:title`: The title for the social media share.
* `og:description`: The description for the social media share.
* `og:image`: The URL of an image that will be displayed with the share. I used the image from the question.
* `og:site_name`: The name of your website.
7. **Twitter Card Tags (`twitter:` prefix)**: Similar to Open Graph, these tags optimize content display when shared on Twitter.
* `twitter:card`: Type of Twitter card (`summary_large_image` is good for content with a prominent image).
* `twitter:site`: The Twitter handle of the website/publisher. (Placeholder provided, replace if you have one).
* `twitter:creator`: The Twitter handle of the content creator (omitted as not provided).
* `twitter:title`, `twitter:description`, `twitter:image`: Similar to their Open Graph counterparts.
8. **Schema.org Microdata (`application/ld+json`)**: This JSON-LD structured data helps search engines understand the content's context more deeply, potentially leading to rich snippets in search results (e.g., showing the question and answer directly).
* I've used `QAPage` (Question and Answer Page) schema, marking the question, its text, the options, and the likely correct answer. This is highly relevant for an exam question page.
* I've also included `isPartOf` to link it to a broader category page (like "GATE Mechanical Engineering 2017 Set 2 Questions") and `publisher` information.
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Mechanical Engineering > GATE 2017 SET-2 > Natural Frequency
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<div class="question-text">A mass m is attached to two identical springs having spring constant k as shown in the figure. The natural frequency ω of this single degree of freedom system is
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<div class="option" onclick="selectOption(this,'A')"><div class="option-label">A</div><div class="option-value">√(2k/m)</div></div>
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<div class="option" onclick="selectOption(this,'C')"><div class="option-label">C</div><div class="option-value">√(k/2m)</div></div>
<div class="option" onclick="selectOption(this,'D')"><div class="option-label">D</div><div class="option-value">√(4k/m)</div></div>
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<p><b>Correct :</b> a</p>
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<script src="https://cdn.jsdelivr.net/npm/sweetalert2@11"></script>
<script>
// Get data from Laravel controller
const user = null;
const sampleNotifications = [];
// Global variables to store menu elements
let notificationBtn, notificationMenu, notificationOverlay, notificationBadge;
// Generate notification content function
function generateNotificationContent() {
if (!user) {
return `
<div class="login-prompt">
<i class="fas fa-user-lock"></i>
<h6>Sign in to View Notifications</h6>
<p>Login to access your personalized notifications and stay updated with your exam progress.</p>
<a href="/login" class="login-btn">
<i class="fas fa-sign-in-alt me-2"></i>
Login Now
</a>
</div>
`;
}
const notifications = sampleNotifications || [];
const unreadCount = notifications.filter(n => n.unread).length;
let content = `
<div class="notification-header">
<h6 class="notification-title">
<i class="fas fa-bell me-2"></i>
Notifications
${unreadCount > 0 ? `<span class="notification-count">${unreadCount} new</span>` : ''}
</h6>
</div>
`;
if (notifications.length === 0) {
content += `
<div class="notification-empty">
<i class="fas fa-bell-slash"></i>
<h6>No Notifications</h6>
<p>You're all caught up! New notifications will appear here.</p>
</div>
`;
} else {
content += '<div class="notification-body">';
notifications.forEach(notification => {
content += `
<div class="notification-item ${notification.unread ? 'unread' : ''}" onclick="markAsRead(${notification.id})">
<div class="notification-icon ${notification.type}">
<i class="${notification.icon}"></i>
</div>
<div class="notification-content">
<p class="notification-text">${notification.text}</p>
<small class="notification-time">${notification.time}</small>
</div>
</div>
`;
});
content += '</div>';
}
if (notifications.length > 0) {
content += `
<div class="notification-footer">
<a href="/notifications">View All Notifications</a>
</div>
`;
}
return content;
}
// Close notification menu function
function closeNotificationMenu() {
if (notificationMenu) notificationMenu.classList.remove('show');
if (notificationOverlay) notificationOverlay.classList.remove('show');
}
// Open notification menu function
function openNotificationMenu() {
if (typeof closeLoginModal === 'function') {
closeLoginModal();
}
if (notificationMenu) notificationMenu.classList.add('show');
if (notificationOverlay) notificationOverlay.classList.add('show');
}
function initializeNotifications() {
// Get DOM elements
notificationBtn = document.getElementById('notificationBtn');
notificationMenu = document.getElementById('notificationMenu');
notificationOverlay = document.getElementById('notificationOverlay');
notificationBadge = document.getElementById('notificationBadge');
if (!notificationBtn || !notificationMenu) {
console.error('Notification elements not found');
return;
}
// Populate notification menu
notificationMenu.innerHTML = generateNotificationContent();
// Toggle notification dropdown
notificationBtn.addEventListener('click', function(e) {
e.preventDefault();
e.stopPropagation();
const isOpen = notificationMenu.classList.contains('show');
console.log('Notification button clicked, isOpen:', isOpen);
if (isOpen) {
closeNotificationMenu();
} else {
openNotificationMenu();
}
});
// Close notification menu when clicking outside
document.addEventListener('click', function(e) {
if (!notificationBtn.contains(e.target) && !notificationMenu.contains(e.target)) {
closeNotificationMenu();
}
});
// Close notification menu when clicking overlay
if (notificationOverlay) {
notificationOverlay.addEventListener('click', closeNotificationMenu);
}
// Close notification menu on escape key
document.addEventListener('keydown', function(e) {
if (e.key === 'Escape') {
closeNotificationMenu();
if (typeof closeLoginModal === 'function') {
closeLoginModal();
}
}
});
// Prevent notification menu from closing when clicking inside it
notificationMenu.addEventListener('click', function(e) {
e.stopPropagation();
});
}
// Profile dropdown functionality
function initializeProfile() {
const profileBtn = document.getElementById('profileBtn');
const profileMenu = document.getElementById('profileMenu');
if (!profileBtn) return;
if (!user) {
// For unauthenticated users, show login modal
profileBtn.addEventListener('click', function(e) {
e.stopPropagation();
if (typeof openLoginModal === 'function') {
openLoginModal();
}
});
} else {
// For authenticated users, use hover behavior (handled by CSS)
// Additional click handling for mobile
profileBtn.addEventListener('click', function(e) {
e.stopPropagation();
if (profileMenu) {
const isVisible = profileMenu.style.opacity === '1' || window.getComputedStyle(profileMenu).opacity === '1';
if (isVisible) {
profileMenu.style.opacity = '0';
profileMenu.style.visibility = 'hidden';
profileMenu.style.transform = 'translateY(10px)';
} else {
closeNotificationMenu();
if (typeof closeLoginModal === 'function') {
closeLoginModal();
}
profileMenu.style.opacity = '1';
profileMenu.style.visibility = 'visible';
profileMenu.style.transform = 'translateY(0)';
}
}
});
// Close profile menu when clicking outside (mobile)
document.addEventListener('click', function(e) {
if (window.innerWidth <= 768 && profileMenu && !profileBtn.contains(e.target) && !profileMenu.contains(e.target)) {
profileMenu.style.opacity = '0';
profileMenu.style.visibility = 'hidden';
profileMenu.style.transform = 'translateY(10px)';
}
});
}
}
// Login modal functionality
function initializeLoginModal() {
const loginModalOverlay = document.getElementById('loginModalOverlay');
const loginModal = document.getElementById('loginModal');
const closeLoginBtn = document.getElementById('closeLoginModal');
if (!loginModalOverlay) return; // Only for unauthenticated users
// Close login modal
window.closeLoginModal = function() {
loginModalOverlay.classList.remove('show');
};
// Open login modal
window.openLoginModal = function() {
closeNotificationMenu();
loginModalOverlay.classList.add('show');
};
// Close button
if (closeLoginBtn) {
closeLoginBtn.addEventListener('click', window.closeLoginModal);
}
// Close when clicking overlay
loginModalOverlay.addEventListener('click', function(e) {
if (e.target === loginModalOverlay) {
window.closeLoginModal();
}
});
// Prevent modal from closing when clicking inside
if (loginModal) {
loginModal.addEventListener('click', function(e) {
e.stopPropagation();
});
}
}
// Mark notification as read
function markAsRead(notificationId) {
if (!user || !sampleNotifications) return;
const notification = sampleNotifications.find(n => n.id === notificationId);
if (notification && notification.unread) {
notification.unread = false;
// Update badge count
const unreadCount = sampleNotifications.filter(n => n.unread).length;
if (notificationBadge) {
notificationBadge.textContent = unreadCount;
notificationBadge.style.display = unreadCount > 0 ? 'block' : 'none';
}
// Refresh notification content
if (notificationMenu) {
notificationMenu.innerHTML = generateNotificationContent();
}
// Send AJAX request to mark notification as read
fetch('/notifications/mark-read', {
method: 'POST',
headers: {
'Content-Type': 'application/json',
'X-CSRF-TOKEN': document.querySelector('meta[name="csrf-token"]').getAttribute('content')
},
body: JSON.stringify({
notification_id: notificationId
})
})
.then(response => response.json())
.then(data => {
if (data.success) {
console.log('Notification marked as read');
}
})
.catch(error => {
console.error('Error marking notification as read:', error);
// Revert the change if request failed
notification.unread = true;
const unreadCount = sampleNotifications.filter(n => n.unread).length;
if (notificationBadge) {
notificationBadge.textContent = unreadCount;
notificationBadge.style.display = unreadCount > 0 ? 'block' : 'none';
}
if (notificationMenu) {
notificationMenu.innerHTML = generateNotificationContent();
}
});
}
}
// Initialize when DOM is loaded
document.addEventListener('DOMContentLoaded', function() {
console.log('DOM loaded, initializing...');
initializeNotifications();
initializeProfile();
initializeLoginModal();
});
// Function to add new notification (for testing or real-time updates)
function addNewNotification(notification) {
if (user && sampleNotifications) {
sampleNotifications.unshift(notification);
// Update badge and content
if (notificationBadge) {
const unreadCount = sampleNotifications.filter(n => n.unread).length;
notificationBadge.textContent = unreadCount;
notificationBadge.style.display = unreadCount > 0 ? 'block' : 'none';
}
if (notificationMenu) {
notificationMenu.innerHTML = generateNotificationContent();
}
}
}
// Function to refresh notifications from server
function refreshNotifications() {
if (!user) return;
fetch('/notifications/get', {
method: 'GET',
headers: {
'Content-Type': 'application/json',
'X-CSRF-TOKEN': document.querySelector('meta[name="csrf-token"]').getAttribute('content')
}
})
.then(response => response.json())
.then(data => {
if (data.success && data.notifications) {
// Update notifications array
sampleNotifications.length = 0;
sampleNotifications.push(...data.notifications);
// Update UI
if (notificationBadge) {
const unreadCount = sampleNotifications.filter(n => n.unread).length;
notificationBadge.textContent = unreadCount;
notificationBadge.style.display = unreadCount > 0 ? 'block' : 'none';
}
if (notificationMenu) {
notificationMenu.innerHTML = generateNotificationContent();
}
}
})
.catch(error => {
console.error('Error refreshing notifications:', error);
});
}
// Auto-refresh notifications every 30 seconds if user is logged in
if (user) {
setInterval(refreshNotifications, 30000);
}
window.onload = function() {
try
{
const currentUrl = window.location.href;
if (currentUrl === "https://examprev.com/contribute-answer-with-examprev")
{
const branchSelect = document.getElementById('branchSelect');
const selectedBranch = branchSelect.value;
fetchQuestions(selectedBranch);
}
console.log("Page loaded successfully without errors.");
}
catch(error)
{
console.error("An error occurred:", error.message);
}
const csrfToken = document.querySelector('input[name="_token"]')?.value;
if (!csrfToken) {
console.error('CSRF token not found');
return;
}
const currentURL = window.location.href;
const formData = new FormData();
// Assuming csrf() is a function that returns the CSRF token.
formData.append('currentUrl', currentURL);
};
function scrollPagination(direction) {
const container = document.getElementById("paginationContainer");
const scrollAmount = 100; // Adjust scroll distance
container.scrollBy({ left: direction * scrollAmount, behavior: "smooth" });
}
function ensureActivePageVisible() {
const container = document.getElementById("paginationContainer");
const activePage = document.querySelector(".custom-pagination-button.active");
if (activePage) {
const containerRect = container.getBoundingClientRect();
const activePageRect = activePage.getBoundingClientRect();
// Check if the active page is outside the visible scroll area
if (activePageRect.left < containerRect.left || activePageRect.right > containerRect.right) {
container.scrollLeft += (activePageRect.left - containerRect.left) - (container.offsetWidth / 2) + (activePage.offsetWidth / 2);
}
}
}
// Ensure current page is visible when the page loads
document.addEventListener("DOMContentLoaded", ensureActivePageVisible);
document.querySelectorAll(".option").forEach(fieldset => {
fieldset.addEventListener("click", function () {
let questionId = this.getAttribute("data-question-id");
let messageElement = document.getElementById("message-" + questionId);
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if (document.querySelector(`[data-question-id='${questionId}'].correct`) || document.querySelector(`[data-question-id='${questionId}'].incorrect`)) {
return;
}
let legend = this.querySelector("legend");
legend.style.visibility = "visible";
legend.style.fontFamily = "'Poppins', sans-serif";
if (this.getAttribute("data-correct") === "true") {
this.classList.add("correct");
legend.innerText = "Correct";
legend.classList.add("correct-text");
messageElement.innerText = "Correct! 🎉";
messageElement.style.color = "green";
} else {
this.classList.add("incorrect");
legend.innerText = "Incorrect";
legend.classList.add("incorrect-text");
messageElement.innerText = "Incorrect! ❌ Try again.";
messageElement.style.color = "red";
// Highlight correct answers within the same question
document.querySelectorAll(`[data-question-id='${questionId}'][data-correct='true']`).forEach(correctOption => {
correctOption.classList.add("correct");
let correctLegend = correctOption.querySelector("legend");
correctLegend.style.visibility = "visible";
correctLegend.innerText = "Correct";
correctLegend.classList.add("correct-text");
});
}
});
});
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let adsLoaded = false;
function loadAdSense() {
if (adsLoaded) return;
adsLoaded = true;
var s = document.createElement("script");
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"https://pagead2.googlesyndication.com/pagead/js/adsbygoogle.js?client=ca-pub-4999327676889242";
s.async = true;
s.crossOrigin = "anonymous";
document.head.appendChild(s);
}
// Load after page is fully loaded + 2 seconds
window.addEventListener("load", function () {
setTimeout(loadAdSense, 5000);
});
})();
(function () {
function updateVisitorCount(count) {
const el = document.getElementById("visitorCount");
if (!el) return;
el.innerHTML = "";
count.toString().split("").forEach(d => {
const s = document.createElement("span");
s.className = "digit";
s.textContent = d;
el.appendChild(s);
});
}
function loadVisitorCount() {
const csrf =
document.querySelector('meta[name="csrf-token"]')?.content ||
document.querySelector('input[name="_token"]')?.value;
if (!csrf) return;
const fd = new FormData();
fd.append("currentUrl", location.href);
fetch("/getVisitorCount", {
method: "POST",
headers: { "X-CSRF-TOKEN": csrf },
body: fd,
keepalive: true
})
.then(r => r.json())
.then(d => d?.count && updateVisitorCount(d.count))
.catch(() => {});
}
window.addEventListener("load", () => {
setTimeout(loadVisitorCount, 3000);
});
})();
</script></html>