Tutorial Bootstrap 3 Dropdown
TrikSonic - Apa itu Dropdown pada Bootstrap ? Dropdown adalah Bentuk menu yang menurun ke bawah pada tampilan Graphical User Interface biasaya berupa list box, yang diperuntukan untuk user dalam memilih opsi yang tersedia
Catatan : jQuery dan bootstrap Plugin diperlukan untuk Dropdown Bootstrap
Contoh Dropdown
<div class="dropdown">
  <button class="btn btn-default dropdown-toggle" data-toggle="dropdown">
    Dropdown <span class="caret"></span>
  </button>
  <ul class="dropdown-menu">
    <li><a href="#">Menu 1</a></li>
    <li><a href="#">Menu 2</a></li>
    <li><a href="#">Menu 3</a></li>
    <li><a href="#">Menu 4</a></li>
  </ul>
</div>
Hasil :
<!DOCTYPE html>
<html lang="id">
<head>
<meta charset="utf-8"/>
  <title>Triksonic Demo Bootstrap 3</title>
  <meta name="viewport" content="width=device-width, initial-scale=1"/>
  <!--Bootstrap 3 css-->
  <link href='https://cdnjs.cloudflare.com/ajax/libs/twitter-bootstrap/3.3.7/css/bootstrap.min.css' rel='stylesheet'/>
</head>
<body>
<section class="container">
<h2>Bootstrap 3 Dropdown</h2>
<div class="dropdown">
  <button class="btn btn-default dropdown-toggle" data-toggle="dropdown">
    Dropdown <span class="caret"></span>
  </button>
  <ul class="dropdown-menu">
    <li><a href="#">Menu 1</a></li>
    <li><a href="#">Menu 2</a></li>
    <li><a href="#">Menu 3</a></li>
    <li><a href="#">Menu 4</a></li>
  </ul>
</div>
</section>
<!-- jquery, bootstrap js -->
<script src="https://ajax.googleapis.com/ajax/libs/jquery/3.2.1/jquery.min.js"></script>
<script src="https://cdnjs.cloudflare.com/ajax/libs/twitter-bootstrap/3.3.7/js/bootstrap.min.js"></script>
</body>
</html>
Dropup
Jika ingin tampilan menu yang keluar berada diatas element Pemicu gunakan class .dropup pada pembungkus utama.
Contoh :
<div class="dropup">
  <button class="btn btn-default dropdown-toggle" data-toggle="dropdown">
    Dropdown <span class="caret"></span>
  </button>
  <ul class="dropdown-menu">
    <li><a href="#">Menu 1</a></li>
    <li><a href="#">Menu 2</a></li>
    <li><a href="#">Menu 3</a></li>
    <li><a href="#">Menu 4</a></li>
  </ul>
</div>
Hasil :
<!DOCTYPE html>
<html lang="id">
<head>
<meta charset="utf-8"/>
  <title>Triksonic Demo Bootstrap 3</title>
  <meta name="viewport" content="width=device-width, initial-scale=1"/>
  <!--Bootstrap 3 css-->
  <link href='https://cdnjs.cloudflare.com/ajax/libs/twitter-bootstrap/3.3.7/css/bootstrap.min.css' rel='stylesheet'/>
</head>
<body>
<section class="container">
<h2>Bootstrap 3 Dropup</h2>
<br/><br/><br/><br/>
<div class="dropup">
  <button class="btn btn-default dropdown-toggle" data-toggle="dropdown">
    Dropup <span class="caret"></span>
  </button>
  <ul class="dropdown-menu">
    <li><a href="#">Menu 1</a></li>
    <li><a href="#">Menu 2</a></li>
    <li><a href="#">Menu 3</a></li>
    <li><a href="#">Menu 4</a></li>
  </ul>
</div>
</section>
<!-- jquery, bootstrap js -->
<script src="https://ajax.googleapis.com/ajax/libs/jquery/3.2.1/jquery.min.js"></script>
<script src="https://cdnjs.cloudflare.com/ajax/libs/twitter-bootstrap/3.3.7/js/bootstrap.min.js"></script>
</body>
</html>
Dropdown Posisi
Untuk mengatur keselarasan atau posisi menu dropdown, gunakan class 
.dropdown-menu-left (untuk posisi kiri) dan .dropdown-menu-right (untuk posisi kanan).Jika metode ini diterapkan maka dropdown akan menyesuaikan posisi dengan lebar pembungkus nya.
Contoh :
<div class="dropdown">
  <button class="btn btn-default dropdown-toggle" data-toggle="dropdown">
    Dropdown <span class="caret"></span>
  </button>
  <ul class="dropdown-menu dropdown-menu-right">
    <li><a href="#">Menu 1</a></li>
    <li><a href="#">Menu 2</a></li>
    <li><a href="#">Menu 3</a></li>
    <li><a href="#">Menu 4</a></li>
  </ul>
</div>
Hasil :
<!DOCTYPE html>
<html lang="id">
<head>
<meta charset="utf-8"/>
  <title>Triksonic Demo Bootstrap 3</title>
  <meta name="viewport" content="width=device-width, initial-scale=1"/>
  <!--Bootstrap 3 css-->
  <link href='https://cdnjs.cloudflare.com/ajax/libs/twitter-bootstrap/3.3.7/css/bootstrap.min.css' rel='stylesheet'/>
<style>
.example {
  width : 250px;
  background : pink;
  padding : 5px;
}
</style>
</head>
<body>
<section class="container">
<h2>Bootstrap 3 Dropdown</h2>
<div class="example">
  <div class="dropdown">
    <button class="btn btn-default dropdown-toggle" data-toggle="dropdown">
      Dropdown <span class="caret"></span>
    </button>
    <ul class="dropdown-menu dropdown-menu-right">
      <li><a href="#">Menu 1</a></li>
      <li><a href="#">Menu 2</a></li>
      <li><a href="#">Menu 3</a></li>
      <li><a href="#">Menu 4</a></li>
    </ul>
  </div>
</div>
</section>
<!-- jquery, bootstrap js -->
<script src="https://ajax.googleapis.com/ajax/libs/jquery/3.2.1/jquery.min.js"></script>
<script src="https://cdnjs.cloudflare.com/ajax/libs/twitter-bootstrap/3.3.7/js/bootstrap.min.js"></script>
</body>
</html>
Dropdown Headers
Digunakan untuk judul atau label pada daftar menu. Untuk menerapkannya tambahkan class 
.dropdown-header pada element <li> yang berada didalam element <ul class="dropdown-menu">...</ul>Contoh :
<div class="dropdown">
  <button class="btn btn-default dropdown-toggle" data-toggle="dropdown">
    Dropdown <span class="caret"></span>
  </button>
  <ul class="dropdown-menu">
    <li class="dropdown-header">Tutorial</li>
    <li><a href="#">HTML</a></li>
    <li><a href="#">CSS</a></li>
    <li><a href="#">JavaScript</a></li>
    <li class="dropdown-header">Judul 2</li>
    <li><a href="#">Menu 1</a></li>
    <li><a href="#">Menu 2</a></li>
    <li><a href="#">Menu 3</a></li>
  </ul>
</div>
Hasil :
<!DOCTYPE html>
<html lang="id">
<head>
<meta charset="utf-8"/>
  <title>Triksonic Demo Bootstrap 3</title>
  <meta name="viewport" content="width=device-width, initial-scale=1"/>
  <!--Bootstrap 3 css-->
  <link href='https://cdnjs.cloudflare.com/ajax/libs/twitter-bootstrap/3.3.7/css/bootstrap.min.css' rel='stylesheet'/>
</head>
<body>
<section class="container">
<h2>Bootstrap 3 Dropdown Header</h2>
<div class="dropdown">
  <button class="btn btn-default dropdown-toggle" data-toggle="dropdown">
    Dropdown <span class="caret"></span>
  </button>
  <ul class="dropdown-menu">
    <li class="dropdown-header">Tutorial</li>
    <li><a href="#">HTML</a></li>
    <li><a href="#">CSS</a></li>
    <li><a href="#">JavaScript</a></li>
    <li class="dropdown-header">Judul 2</li>
    <li><a href="#">Menu 1</a></li>
    <li><a href="#">Menu 2</a></li>
    <li><a href="#">Menu 3</a></li>
  </ul>
</div>
</section>
<!-- jquery, bootstrap js -->
<script src="https://ajax.googleapis.com/ajax/libs/jquery/3.2.1/jquery.min.js"></script>
<script src="https://cdnjs.cloudflare.com/ajax/libs/twitter-bootstrap/3.3.7/js/bootstrap.min.js"></script>
</body>
</html>
Dropdown Divider
Divider pada dropdown Bootstrap berfungsi sebagai pembatas antar daftar menu.
Untuk menerapkannya tambahkan class 
.divider pada element <li>Contoh :
<div class="dropdown">
  <button class="btn btn-default dropdown-toggle" data-toggle="dropdown">
    Dropdown <span class="caret"></span>
  </button>
  <ul class="dropdown-menu">
    <li><a href="#">Menu 1</a></li>
    <li><a href="#">Menu 2</a></li>
    <li><a href="#">Menu 3</a></li>
    <li class="divider"></li>
    <li><a href="#">Link Terpisah</a></li>
  </ul>
</div>
Hasil :
<!DOCTYPE html>
<html lang="id">
<head>
<meta charset="utf-8"/>
  <title>Triksonic Demo Bootstrap 3</title>
  <meta name="viewport" content="width=device-width, initial-scale=1"/>
  <!--Bootstrap 3 css-->
  <link href='https://cdnjs.cloudflare.com/ajax/libs/twitter-bootstrap/3.3.7/css/bootstrap.min.css' rel='stylesheet'/>
</head>
<body>
<section class="container">
<h2>Bootstrap 3 Dropdown <code>Divider</code></h2>
<div class="dropdown">
  <button class="btn btn-default dropdown-toggle" data-toggle="dropdown">
    Dropdown <span class="caret"></span>
  </button>
  <ul class="dropdown-menu">
    <li><a href="#">Menu 1</a></li>
    <li><a href="#">Menu 2</a></li>
    <li><a href="#">Menu 3</a></li>
    <li class="divider"></li>
    <li><a href="#">Link Terpisah</a></li>
  </ul>
</div>
</section>
<!-- jquery, bootstrap js -->
<script src="https://ajax.googleapis.com/ajax/libs/jquery/3.2.1/jquery.min.js"></script>
<script src="https://cdnjs.cloudflare.com/ajax/libs/twitter-bootstrap/3.3.7/js/bootstrap.min.js"></script>
</body>
</html>
Dropdown Active dan Disabled
Untuk menampilkan daftar menu yang sedang aktif gunakan class 
.active pada element <li> yang berada dalam area <ul class="dropdown-menu">..</ul>Sedangkan untuk memberikan tampilan nonaktif pada daftar menu gunakan class 
.disabledContoh :
<div class="dropdown">
  <button class="btn btn-default dropdown-toggle" data-toggle="dropdown">
    Dropdown <span class="caret"></span>
  </button>
  <ul class="dropdown-menu">
    <li class="active"><a href="#">Active List</a></li>
    <li><a href="#">Link</a></li>
    <li><a href="#">Link</a></li>
    <li class="disabled"><a href="#">Disabled List</a></li>
    <li><a href="#">Link</a></li>
  </ul>
</div>
Hasil :
<!DOCTYPE html>
<html lang="id">
<head>
<meta charset="utf-8"/>
  <title>Triksonic Demo Bootstrap 3</title>
  <meta name="viewport" content="width=device-width, initial-scale=1"/>
  <!--Bootstrap 3 css-->
  <link href='https://cdnjs.cloudflare.com/ajax/libs/twitter-bootstrap/3.3.7/css/bootstrap.min.css' rel='stylesheet'/>
</head>
<body>
<section class="container">
<h2>Bootstrap 3 Dropdown <code>Divider</code></h2>
<div class="dropdown">
  <button class="btn btn-default dropdown-toggle" data-toggle="dropdown">
    Dropdown <span class="caret"></span>
  </button>
  <ul class="dropdown-menu">
    <li class="active"><a href="#">Active List</a></li>
    <li><a href="#">Link</a></li>
    <li><a href="#">Link</a></li>
    <li class="disabled"><a href="#">Disabled List</a></li>
    <li><a href="#">Link</a></li>
  </ul>
</div>
</section>
<!-- jquery, bootstrap js -->
<script src="https://ajax.googleapis.com/ajax/libs/jquery/3.2.1/jquery.min.js"></script>
<script src="https://cdnjs.cloudflare.com/ajax/libs/twitter-bootstrap/3.3.7/js/bootstrap.min.js"></script>
</body>
</html>
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