Giới thiệu
Navbar có ô tìm kiếm (search input) tích hợp giúp người dùng tìm nội dung nhanh mà không cần chuyển trang. Thiết kế phổ biến: logo trái, menu giữa, search phải. Responsive: search co lại hoặc ẩn dưới menu toggle.
Ví dụ hoàn chỉnh - Navbar với Search Input
<!DOCTYPE html>
<html lang="vi">
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<title>Navbar with Search</title>
<link rel="stylesheet" href="https://cdnjs.cloudflare.com/ajax/libs/font-awesome/6.4.0/css/all.min.css">
<style>
* { box-sizing: border-box; margin: 0; padding: 0; }
body { font-family: 'Segoe UI', system-ui, sans-serif; background: #f5f5f5; }
.navbar {
background: #272727;
display: flex;
align-items: center;
justify-content: space-between;
flex-wrap: wrap;
padding: 0 24px;
position: sticky;
top: 0;
z-index: 1000;
box-shadow: 0 2px 10px rgba(0,0,0,0.1);
}
.nav-brand { color: #fff; font-size: 20px; font-weight: 700; text-decoration: none; display: flex; align-items: center; gap: 8px; }
.nav-brand i { color: #b289fd; }
.nav-links { display: flex; align-items: center; gap: 4px; list-style: none; }
.nav-link {
display: flex; align-items: center; gap: 6px;
padding: 16px 20px;
color: #b289fd;
text-decoration: none;
font-size: 15px;
font-weight: 500;
border-radius: 8px;
transition: all 0.2s;
}
.nav-link:hover, .nav-link.active { background: #3a3a3a; color: #fff; }
/* Search Form */
.nav-search { display: flex; align-items: center; margin-left: auto; position: relative; }
.search-input {
padding: 10px 40px 10px 16px;
font-size: 14px;
border: 1px solid #444;
border-radius: 24px;
background: #1a1a1a;
color: #fff;
width: 280px;
transition: all 0.3s ease;
}
.search-input:focus { outline: none; border-color: #b289fd; width: 320px; background: #222; }
.search-input::placeholder { color: #666; }
.search-btn {
position: absolute;
right: 8px;
top: 50%;
transform: translateY(-50%);
background: none;
border: none;
color: #888;
cursor: pointer;
padding: 6px;
font-size: 14px;
transition: color 0.2s;
}
.search-btn:hover { color: #fff; }
/* Mobile */
.menu-toggle { display: none; background: none; border: none; color: #fff; font-size: 24px; cursor: pointer; padding: 12px; }
@media (max-width: 768px) {
.menu-toggle { display: block; }
.nav-links {
width: 100%; flex-direction: column; display: none;
padding: 16px 0; border-top: 1px solid #333;
}
.nav-links.open { display: flex; }
.nav-link { width: 100%; justify-content: flex-start; padding: 14px 20px; border-radius: 0; }
.nav-search { width: 100%; margin-left: 0; margin-top: 16px; padding-top: 16px; border-top: 1px solid #333; }
.search-input { width: 100%; }
}
</style>
</head>
<body>
<nav class="navbar" role="navigation" aria-label="Main navigation">
<a href="#" class="nav-brand"><i class="fas fa-search"></i> SearchApp</a>
<button class="menu-toggle" aria-label="Toggle menu" aria-expanded="false" aria-controls="navMenu"><i class="fas fa-bars"></i></button>
<ul class="nav-links" id="navMenu">
<li><a href="#" class="nav-link active"><i class="fas fa-home"></i> Trang chủ</a></li>
<li><a href="#" class="nav-link"><i class="fas fa-newspaper"></i> Bài viết</a></li>
<li><a href="#" class="nav-link"><i class="fas fa-tags"></i> Chủ đề</a></li>
<li><a href="#" class="nav-link"><i class="fas fa-user"></i> Tác giả</a></li>
<li><a href="#" class="nav-link"><i class="fas fa-envelope"></i> Liên hệ</a></li>
</ul>
<form class="nav-search" role="search">
<input type="search" class="search-input" placeholder="Tìm kiếm bài viết, tác giả..." aria-label="Tìm kiếm" autocomplete="off">
<button type="submit" class="search-btn" aria-label="Tìm kiếm"><i class="fas fa-search"></i></button>
</form>
</nav>
<main style="padding:40px 20px; max-width:800px; margin:0 auto">
<h1>Navbar với Search Input</h1>
<p>Ô tìm kiếm ở góc phải navbar. Resize < 768px để xem mobile layout.</p>
</main>
<script>
const toggle = document.querySelector('.menu-toggle');
const menu = document.querySelector('.nav-links');
toggle.addEventListener('click', () => {
const isOpen = menu.classList.toggle('open');
toggle.setAttribute('aria-expanded', isOpen);
toggle.innerHTML = isOpen ? '<i class="fas fa-times"></i>' : '<i class="fas fa-bars"></i>';
});
menu.querySelectorAll('a').forEach(link => link.addEventListener('click', () => {
menu.classList.remove('open');
toggle.setAttribute('aria-expanded', 'false');
toggle.innerHTML = '<i class="fas fa-bars"></i>';
}));
</script>
</body>
</html>
Chi tiết Search Input
type="search": Semantic, trình duyệt có thể hiển thị nút clear (x) tự động.role="search"trên form: Landmark cho screen reader.border-radius: 24px: Hình pill, hiện đại.position: absolutecho nút search: Nằm đè lên input, padding-right input chừa chỗ.width transition: Mở rộng khi focus (desktop).
Nâng cấp: Search Autocomplete / Suggestions
.search-wrapper { position: relative; }
.search-suggestions {
position: absolute; top: 100%; left: 0; right: 0;
background: #fff; border-radius: 0 0 12px 12px;
box-shadow: 0 8px 24px rgba(0,0,0,0.15);
max-height: 300px; overflow-y: auto;
display: none; z-index: 100;
}
.search-wrapper.active .search-suggestions { display: block; }
.suggestion-item { padding: 12px 16px; cursor: pointer; border-bottom: 1px solid #f0f0f0; }
.suggestion-item:hover { background: #f8f9fa; }
.suggestion-item:last-child { border-bottom: none; }
JS: fetch suggestions khi user gõ (debounce 300ms), render vào .search-suggestions.
SEO & Analytics
- Gửi event
searchđến GA4/GTM khi submit. - URL kết quả:
/search?q=keyword(GET) để SEO-friendly. - Thêm
noindexcho trang kết quả tìm kiếm nội bộ (tránh duplicate content).