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Bootstrap 4 Dropup Tutorial


Dropdown menu is a graphical control element like a list box that allows the user to choose one value from a predefined list. It is a toggleable menu.

Bootstrap provides the following classes to create a dropdown.
.dropdown: class is used to create a dropdown menu.
.dropdown-toggle: class is used to make dropdown toggleable.
.caret: class is used to create a caret arrow icon.
.dropdown-menu: class is used with div element to actually build the dropdown menu.
.dropdown-item: class is used to each element (links or buttons) inside the dropdown menu.

The .dropup class is used to expand dropdown menu upwards instead of downwards

Bootstrap 4 Dropup Example:

<!DOCTYPE html>
<html>
<head>
  <title>Bootstrap 4 Example</title>
  <meta name="viewport" content="width=device-width, initial-scale=1">
  <link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/bootstrap/4.0.0/css/bootstrap.min.css">
  <script src="https://ajax.googleapis.com/ajax/libs/jquery/3.3.1/jquery.min.js"></script>
  <script src="https://cdnjs.cloudflare.com/ajax/libs/popper.js/1.12.9/umd/popper.min.js"></script>
  <script src="https://maxcdn.bootstrapcdn.com/bootstrap/4.0.0/js/bootstrap.min.js"></script>
</head>
<body>
<br>
 
<div class="container">
  <h2>Bootstrap 4 Dropdowns Example</h2>
    <div class="dropup">
    <button type="button" class="btn btn-primary dropdown-toggle" data-toggle="dropdown">
      Dropdown button
    </button>
    <div class="dropdown-menu">
      <a class="dropdown-item" href="#">Link 1</a>
      <a class="dropdown-item" href="#">Link 2</a>
    </div>
  </div>
</div>
 
</body>
</html>

Try it:

Bootstrap 4 Example on jsbin.com

Bootstrap 4 Tutorial

Bootstrap 4 package tutorial.
Bootstrap 4 CDN link tutorial.
Create First Web Page With Bootstrap 4.
Bootstrap 4 Grid System.
Bootstrap 4 grid equal columns example.
Bootstrap 4 grid responsive equal columns.
Bootstrap 4 grid responsive unequal columns.
Bootstrap 4 Jumbotron tutorial.
Bootstrap 4 Full Width Tutorial.
Bootstrap 4 Page Header Tutorial.
Bootstrap 4 Well tutorial.
Bootstrap 4 Alert Tutorial.
Bootstrap 4 Alert Link Tutorial.
Bootstrap 4 Closing Alerts tutorial.
Bootstrap 4 Animated Alerts.
Bootstrap 4 Buttons Style.
Bootstrap 4 Buttons Outline Tutorial.
Bootstrap 4 Buttons Size Tutorial.
Bootstrap 4 Block Level Buttons tutorial.
Bootstrap 4 Buttons States Tutorial.
Bootstrap 4 Button Groups Tutorial.
Bootstrap 4 Vertical Button Groups.
Bootstrap 4 Justified Button Groups.
Bootstrap 4 Nesting Button Groups.
Bootstrap 4 Split Button Dropdowns.
Bootstrap 4 Badges Tutorial.
Bootstrap 4 Basic Progress Bar.
Bootstrap 4 Progress Bar Height.
Bootstrap 4 Progress Bar With Label.
Bootstrap 4 Colored Progress Bars.
Bootstrap 4 Striped Progress Bars.
Bootstrap 4 Animated Progress Bars.
Bootstrap 4 Stacked Progress Bars.
Bootstrap 4 Pagination Tutorial.
Bootstrap 4 Pagination – Active State.
Bootstrap 4 Pagination – Disabled State.
Bootstrap 4 Pagination – Sizing.
Bootstrap 4 Pagination Breadcrumbs.
Bootstrap 4 List Groups Tutorial.
Bootstrap 4 List Group With Linked Items.
Bootstrap 4 Active Item in a List Group.
Bootstrap 4 Disabled Item in a List Group.
Bootstrap 4 Group Contextual Classes.
Bootstrap 4 Basic Panel Tutorial.
Bootstrap 4 Panel Heading Tutorial.
Bootstrap 4 Panel Footer Tutorial.
Bootstrap 4 Cards Tutorial.
Bootstrap 4 Contextual Cards.
Bootstrap 4 Card Titles, Text and Links.
Bootstrap Card Image Tutorial.
Bootstrap Card Image Overlay.
Bootstrap 4 Dropdowns Tutorial.
Bootstrap 4 Dropdowns Divider tutorial.
Bootstrap 4 Dropdowns Header Tutorial.
Bootstrap 4 Dropdowns Active Items.
Bootstrap 4 Dropdowns Disabled Items.
Bootstrap 4 Dropdowns Position Tutorial.
Bootstrap 4 Dropup Tutorial.
Bootstrap 4 Simple Collapsible.
Bootstrap 4 Collapsible Panel Tutorial.
Bootstrap Collapsible List Tutorial.
Bootstrap 4 Stacked Form Tutorial.
Bootstrap 4 Inline Form Tutorial.


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