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Dropdowns - Bootstrap 5 & Material Design 2.0 components

Dropdowns

Dropdowns - Bootstrap 5 & Material Design 2.0 components

Toggle contextual overlays for displaying lists of links and more with the MDB dropdown plugin.

Note: Read the API tab to find all available options and advanced customization


Basic examples

Wrap the dropdown’s toggle (your button or link) and the dropdown menu within .dropdown, or another element that declares position: relative;. Dropdowns can be triggered from <a> or <button> elements to better fit your potential needs. The examples shown here use semantic <ul> elements where appropriate, but custom markup is supported.

Regular button

Any single .btn can be turned into a dropdown toggle with some markup changes. Here’s how you can put them to work with either <button> elements:


            <div class="dropdown">
              <button
                class="btn btn-primary dropdown-toggle"
                type="button"
                id="dropdownMenuButton"
                data-toggle="dropdown"
                aria-expanded="false"
              >
                Dropdown button
              </button>
              <ul class="dropdown-menu" aria-labelledby="dropdownMenuButton">
                <li><a class="dropdown-item" href="#">Action</a></li>
                <li><a class="dropdown-item" href="#">Another action</a></li>
                <li><a class="dropdown-item" href="#">Something else here</a></li>
              </ul>
            </div>
          

Colors

You can do this with any button variant:


          <!-- Primary -->
          <div class="btn-group">
            <button
              type="button"
              class="btn btn-primary dropdown-toggle"
              data-toggle="dropdown"
              aria-expanded="false"
            >
              Action
            </button>
            <ul class="dropdown-menu">
              <li><a class="dropdown-item" href="#">Action</a></li>
              <li><a class="dropdown-item" href="#">Another action</a></li>
              <li><a class="dropdown-item" href="#">Something else here</a></li>
              <li>
                <hr class="dropdown-divider" />
              </li>
              <li><a class="dropdown-item" href="#">Separated link</a></li>
            </ul>
          </div>

          <!-- Secondary -->
          <div class="btn-group">
            <button
              type="button"
              class="btn btn-primary dropdown-toggle"
              data-toggle="dropdown"
              aria-expanded="false"
            >
              Action
            </button>
            <ul class="dropdown-menu">
              <li><a class="dropdown-item" href="#">Action</a></li>
              <li><a class="dropdown-item" href="#">Another action</a></li>
              <li><a class="dropdown-item" href="#">Something else here</a></li>
              <li>
                <hr class="dropdown-divider" />
              </li>
              <li><a class="dropdown-item" href="#">Separated link</a></li>
            </ul>
          </div>

          <!-- Success -->
          <div class="btn-group">
            <button
              type="button"
              class="btn btn-success dropdown-toggle"
              data-toggle="dropdown"
              aria-expanded="false"
            >
              Action
            </button>
            <ul class="dropdown-menu">
              <li><a class="dropdown-item" href="#">Action</a></li>
              <li><a class="dropdown-item" href="#">Another action</a></li>
              <li><a class="dropdown-item" href="#">Something else here</a></li>
              <li>
                <hr class="dropdown-divider" />
              </li>
              <li><a class="dropdown-item" href="#">Separated link</a></li>
            </ul>
          </div>

          <!-- Info -->
          <div class="btn-group">
            <button
              type="button"
              class="btn btn-info dropdown-toggle"
              data-toggle="dropdown"
              aria-expanded="false"
            >
              Action
            </button>
            <ul class="dropdown-menu">
              <li><a class="dropdown-item" href="#">Action</a></li>
              <li><a class="dropdown-item" href="#">Another action</a></li>
              <li><a class="dropdown-item" href="#">Something else here</a></li>
              <li>
                <hr class="dropdown-divider" />
              </li>
              <li><a class="dropdown-item" href="#">Separated link</a></li>
            </ul>
          </div>

          <!-- Warning -->
          <div class="btn-group">
            <button
              type="button"
              class="btn btn-warning dropdown-toggle"
              data-toggle="dropdown"
              aria-expanded="false"
            >
              Action
            </button>
            <ul class="dropdown-menu">
              <li><a class="dropdown-item" href="#">Action</a></li>
              <li><a class="dropdown-item" href="#">Another action</a></li>
              <li><a class="dropdown-item" href="#">Something else here</a></li>
              <li>
                <hr class="dropdown-divider" />
              </li>
              <li><a class="dropdown-item" href="#">Separated link</a></li>
            </ul>
          </div>

          <!-- Danger -->
          <div class="btn-group">
            <button
              type="button"
              class="btn btn-danger dropdown-toggle"
              data-toggle="dropdown"
              aria-expanded="false"
            >
              Action
            </button>
            <ul class="dropdown-menu">
              <li><a class="dropdown-item" href="#">Action</a></li>
              <li><a class="dropdown-item" href="#">Another action</a></li>
              <li><a class="dropdown-item" href="#">Something else here</a></li>
              <li>
                <hr class="dropdown-divider" />
              </li>
              <li><a class="dropdown-item" href="#">Separated link</a></li>
            </ul>
          </div>

          <!-- Danger -->
          <div class="btn-group">
            <button
              type="button"
              class="btn btn-danger dropdown-toggle"
              data-toggle="dropdown"
              aria-expanded="false"
            >
              Action
            </button>
            <ul class="dropdown-menu">
              <li><a class="dropdown-item" href="#">Action</a></li>
              <li><a class="dropdown-item" href="#">Another action</a></li>
              <li><a class="dropdown-item" href="#">Something else here</a></li>
              <li>
                <hr class="dropdown-divider" />
              </li>
              <li><a class="dropdown-item" href="#">Separated link</a></li>
            </ul>
          </div>

          <!-- Dark -->
          <div class="btn-group">
            <button
              type="button"
              class="btn btn-dark dropdown-toggle"
              data-toggle="dropdown"
              aria-expanded="false"
            >
              Action
            </button>
            <ul class="dropdown-menu">
              <li><a class="dropdown-item" href="#">Action</a></li>
              <li><a class="dropdown-item" href="#">Another action</a></li>
              <li><a class="dropdown-item" href="#">Something else here</a></li>
              <li>
                <hr class="dropdown-divider" />
              </li>
              <li><a class="dropdown-item" href="#">Separated link</a></li>
            </ul>
          </div>

          <!-- Light -->
          <div class="btn-group shadow-0">
            <button
              type="button"
              class="btn btn-light dropdown-toggle"
              data-toggle="dropdown"
              aria-expanded="false"
            >
              Action
            </button>
            <ul class="dropdown-menu">
              <li><a class="dropdown-item" href="#">Action</a></li>
              <li><a class="dropdown-item" href="#">Another action</a></li>
              <li><a class="dropdown-item" href="#">Something else here</a></li>
              <li>
                <hr class="dropdown-divider" />
              </li>
              <li><a class="dropdown-item" href="#">Separated link</a></li>
            </ul>
          </div>

          <!-- Link -->
          <div class="btn-group shadow-0">
            <button
              type="button"
              class="btn btn-link dropdown-toggle"
              data-toggle="dropdown"
              aria-expanded="false"
            >
              Action
            </button>
            <ul class="dropdown-menu">
              <li><a class="dropdown-item" href="#">Action</a></li>
              <li><a class="dropdown-item" href="#">Another action</a></li>
              <li><a class="dropdown-item" href="#">Something else here</a></li>
              <li>
                <hr class="dropdown-divider" />
              </li>
              <li><a class="dropdown-item" href="#">Separated link</a></li>
            </ul>
          </div>
        

Split button

Similarly, create split button dropdowns with virtually the same markup as single button dropdowns, but with the addition of .dropdown-toggle-split for proper spacing around the dropdown caret.

We use this extra class to reduce the horizontal padding on either side of the caret by 25% and remove the margin-left that’s added for regular button dropdowns. Those extra changes keep the caret centered in the split button and provide a more appropriately sized hit area next to the main button.


          <!-- Example split primary button -->
          <div class="btn-group">
            <button type="button" class="btn btn-primary">Action</button>
            <button
              type="button"
              class="btn btn-primary dropdown-toggle dropdown-toggle-split"
              data-toggle="dropdown"
              aria-expanded="false"
            >
              <span class="sr-only">Toggle Dropdown</span>
            </button>
            <ul class="dropdown-menu">
              <li><a class="dropdown-item" href="#">Action</a></li>
              <li><a class="dropdown-item" href="#">Another action</a></li>
              <li><a class="dropdown-item" href="#">Something else here</a></li>
              <li><hr class="dropdown-divider" /></li>
              <li><a class="dropdown-item" href="#">Separated link</a></li>
            </ul>
          </div>
        

Sizing

Button dropdowns work with buttons of all sizes, including default and split dropdown buttons.


          <!-- Large button groups (default and split) -->
          <div class="btn-group">
            <button
              class="btn btn-primary btn-lg dropdown-toggle"
              type="button"
              data-toggle="dropdown"
              aria-expanded="false"
            >
              Large button
            </button>
            <ul class="dropdown-menu">
              <li><a class="dropdown-item" href="#">Action</a></li>
              <li><a class="dropdown-item" href="#">Another action</a></li>
              <li><a class="dropdown-item" href="#">Something else here</a></li>
              <li><hr class="dropdown-divider" /></li>
              <li><a class="dropdown-item" href="#">Separated link</a></li>
            </ul>
          </div>
          <div class="btn-group">
            <button class="btn btn-primary btn-lg" type="button">
              Large split button
            </button>
            <button
              type="button"
              class="btn btn-lg btn-primary dropdown-toggle dropdown-toggle-split"
              data-toggle="dropdown"
              aria-expanded="false"
            >
              <span class="sr-only">Toggle Dropdown</span>
            </button>
            <ul class="dropdown-menu">
              <li><a class="dropdown-item" href="#">Action</a></li>
              <li><a class="dropdown-item" href="#">Another action</a></li>
              <li><a class="dropdown-item" href="#">Something else here</a></li>
              <li><hr class="dropdown-divider" /></li>
              <li><a class="dropdown-item" href="#">Separated link</a></li>
            </ul>
          </div>

          <!-- Small button groups (default and split) -->
          <div class="btn-group">
            <button
              class="btn btn-primary btn-sm dropdown-toggle"
              type="button"
              data-toggle="dropdown"
              aria-expanded="false"
            >
              Small button
            </button>
            <ul class="dropdown-menu">
              <li><a class="dropdown-item" href="#">Action</a></li>
              <li><a class="dropdown-item" href="#">Another action</a></li>
              <li><a class="dropdown-item" href="#">Something else here</a></li>
              <li><hr class="dropdown-divider" /></li>
              <li><a class="dropdown-item" href="#">Separated link</a></li>
            </ul>
          </div>
          <div class="btn-group">
            <button class="btn btn-primary btn-sm" type="button">
              Small split button
            </button>
            <button
              type="button"
              class="btn btn-sm btn-primary dropdown-toggle dropdown-toggle-split"
              data-toggle="dropdown"
              aria-expanded="false"
            >
              <span class="sr-only">Toggle Dropdown</span>
            </button>
            <ul class="dropdown-menu">
              <li><a class="dropdown-item" href="#">Action</a></li>
              <li><a class="dropdown-item" href="#">Another action</a></li>
              <li><a class="dropdown-item" href="#">Something else here</a></li>
              <li><hr class="dropdown-divider" /></li>
              <li><a class="dropdown-item" href="#">Separated link</a></li>
            </ul>
          </div>
        

Directions

Dropup

Trigger dropdown menus above elements by adding .dropup to the parent element.


            <!-- Default dropup button -->
            <div class="btn-group dropup">
              <button
                type="button"
                class="btn btn-primary dropdown-toggle"
                data-toggle="dropdown"
                aria-expanded="false"
              >
                Dropup
              </button>
              <ul class="dropdown-menu">
                <li><a class="dropdown-item" href="#">Action</a></li>
                <li><a class="dropdown-item" href="#">Another action</a></li>
                <li><a class="dropdown-item" href="#">Something else here</a></li>
                <li><hr class="dropdown-divider" /></li>
                <li><a class="dropdown-item" href="#">Separated link</a></li>
              </ul>
            </div>

            <!-- Split dropup button -->
            <div class="btn-group dropup">
              <button type="button" class="btn btn-primary">
                Split dropup
              </button>
              <button
                type="button"
                class="btn btn-primary dropdown-toggle dropdown-toggle-split"
                data-toggle="dropdown"
                aria-expanded="false"
              >
                <span class="sr-only">Toggle Dropdown</span>
              </button>
              <ul class="dropdown-menu">
                <li><a class="dropdown-item" href="#">Action</a></li>
                <li><a class="dropdown-item" href="#">Another action</a></li>
                <li><a class="dropdown-item" href="#">Something else here</a></li>
                <li><hr class="dropdown-divider" /></li>
                <li><a class="dropdown-item" href="#">Separated link</a></li>
              </ul>
            </div>
          

Dropright

Trigger dropdown menus at the right of the elements by adding .dropright to the parent element.


            <!-- Default dropright button -->
            <div class="btn-group dropright">
              <button
                type="button"
                class="btn btn-primary dropdown-toggle"
                data-toggle="dropdown"
                aria-expanded="false"
              >
                Dropright
              </button>
              <ul class="dropdown-menu">
                <li><a class="dropdown-item" href="#">Action</a></li>
                <li><a class="dropdown-item" href="#">Another action</a></li>
                <li><a class="dropdown-item" href="#">Something else here</a></li>
                <li><hr class="dropdown-divider" /></li>
                <li><a class="dropdown-item" href="#">Separated link</a></li>
              </ul>
            </div>

            <!-- Split dropright button -->
            <div class="btn-group dropright">
              <button type="button" class="btn btn-primary">
                Split dropright
              </button>
              <button
                type="button"
                class="btn btn-primary dropdown-toggle dropdown-toggle-split"
                data-toggle="dropdown"
                aria-expanded="false"
              >
                <span class="sr-only">Toggle Dropright</span>
              </button>
              <ul class="dropdown-menu">
                <li><a class="dropdown-item" href="#">Action</a></li>
                <li><a class="dropdown-item" href="#">Another action</a></li>
                <li><a class="dropdown-item" href="#">Something else here</a></li>
                <li><hr class="dropdown-divider" /></li>
                <li><a class="dropdown-item" href="#">Separated link</a></li>
              </ul>
            </div>
          

Dropleft

Trigger dropdown menus at the left of the elements by adding .dropleft to the parent element.


            <!-- Default dropleft button -->
            <div class="btn-group dropleft">
              <button
                type="button"
                class="btn btn-primary dropdown-toggle"
                data-toggle="dropdown"
                aria-expanded="false"
              >
                Dropleft
              </button>
              <ul class="dropdown-menu">
                <li><a class="dropdown-item" href="#">Action</a></li>
                <li><a class="dropdown-item" href="#">Another action</a></li>
                <li><a class="dropdown-item" href="#">Something else here</a></li>
                <li><hr class="dropdown-divider" /></li>
                <li><a class="dropdown-item" href="#">Separated link</a></li>
              </ul>
            </div>

            <!-- Split dropleft button -->
            <div class="btn-group">
              <div class="btn-group dropleft" role="group">
                <button
                  type="button"
                  class="btn btn-primary dropdown-toggle dropdown-toggle-split"
                  data-toggle="dropdown"
                  aria-expanded="false"
                >
                  <span class="sr-only">Toggle Dropleft</span>
                </button>
                <ul class="dropdown-menu">
                  <li><a class="dropdown-item" href="#">Action</a></li>
                  <li><a class="dropdown-item" href="#">Another action</a></li>
                  <li><a class="dropdown-item" href="#">Something else here</a></li>
                  <li><hr class="dropdown-divider" /></li>
                  <li><a class="dropdown-item" href="#">Separated link</a></li>
                </ul>
              </div>
              <button type="button" class="btn btn-primary">
                Split dropleft
              </button>
            </div>
          

Menu items

Historically dropdown menu contents had to be links, but that’s no longer the case with v4. Now you can optionally use <button> elements in your dropdowns instead of just <a>s.


          <div class="dropdown">
            <button
              class="btn btn-primary dropdown-toggle"
              type="button"
              id="dropdownMenu2"
              data-toggle="dropdown"
              aria-expanded="false"
            >
              Dropdown
            </button>
            <ul class="dropdown-menu" aria-labelledby="dropdownMenu2">
              <li><button class="dropdown-item" type="button">Action</button></li>
              <li>
                <button class="dropdown-item" type="button">Another action</button>
              </li>
              <li>
                <button class="dropdown-item" type="button">
                  Something else here
                </button>
              </li>
            </ul>
          </div>
        

You can also create non-interactive dropdown items with .dropdown-item-text. Feel free to style further with custom CSS or text utilities.


          <ul class="dropdown-menu">
            <li><span class="dropdown-item-text">Dropdown item text</span></li>
            <li><a class="dropdown-item" href="#">Action</a></li>
            <li><a class="dropdown-item" href="#">Another action</a></li>
            <li><a class="dropdown-item" href="#">Something else here</a></li>
          </ul>
        

Active

Add .active to items in the dropdown to style them as active. To convey the active state to assistive technologies, use the aria-current attribute — using the page value for the current page, or true for the current item in a set.


            <ul class="dropdown-menu">
              <li><a class="dropdown-item" href="#">Regular link</a></li>
              <li>
                <a class="dropdown-item active" href="#" aria-current="true">Active link</a>
              </li>
              <li><a class="dropdown-item" href="#">Another link</a></li>
            </ul>
          

Disabled

Add .disabled to items in the dropdown to style them as disabled.


            <ul class="dropdown-menu">
              <li><a class="dropdown-item" href="#">Regular link</a></li>
              <li>
                <a class="dropdown-item disabled" href="#" tabindex="-1" aria-disabled="true"
                  >Disabled link</a
                >
              </li>
              <li><a class="dropdown-item" href="#">Another link</a></li>
            </ul>
          

Menu alignment

By default, a dropdown menu is automatically positioned 100% from the top and along the left side of its parent. Add .dropdown-menu-right to a .dropdown-menu to right align the dropdown menu.


          <div class="btn-group">
            <button
              type="button"
              class="btn btn-primary dropdown-toggle"
              data-toggle="dropdown"
              aria-expanded="false"
            >
              Right-aligned menu
            </button>
            <ul class="dropdown-menu dropdown-menu-right">
              <li><button class="dropdown-item" type="button">Action</button></li>
              <li>
                <button class="dropdown-item" type="button">Another action</button>
              </li>
              <li>
                <button class="dropdown-item" type="button">
                  Something else here
                </button>
              </li>
            </ul>
          </div>
        

Responsive alignment

If you want to use responsive alignment, disable dynamic positioning by adding the data-display="static" attribute and use the responsive variation classes.

To align right the dropdown menu with the given breakpoint or larger, add .dropdown-menu{-sm|-md|-lg|-xl|-xxl}-right.


            <div class="btn-group">
              <button
                type="button"
                class="btn btn-primary dropdown-toggle"
                data-toggle="dropdown"
                data-display="static"
                aria-expanded="false"
              >
                Left-aligned but right aligned when large screen
              </button>
              <ul class="dropdown-menu dropdown-menu-lg-right">
                <li><button class="dropdown-item" type="button">Action</button></li>
                <li>
                  <button class="dropdown-item" type="button">
                    Another action
                  </button>
                </li>
                <li>
                  <button class="dropdown-item" type="button">
                    Something else here
                  </button>
                </li>
              </ul>
            </div>
          

To align left the dropdown menu with the given breakpoint or larger, add .dropdown-menu-right and .dropdown-menu{-sm|-md|-lg|-xl|-xxl}-left.


            <div class="btn-group">
              <button
                type="button"
                class="btn btn-primary dropdown-toggle"
                data-toggle="dropdown"
                data-display="static"
                aria-expanded="false"
              >
                Right-aligned but left aligned when large screen
              </button>
              <ul class="dropdown-menu dropdown-menu-right dropdown-menu-lg-left">
                <li><button class="dropdown-item" type="button">Action</button></li>
                <li>
                  <button class="dropdown-item" type="button">
                    Another action
                  </button>
                </li>
                <li>
                  <button class="dropdown-item" type="button">
                    Something else here
                  </button>
                </li>
              </ul>
            </div>
          

Note that you don’t need to add a data-display="static" attribute to dropdown buttons in navbars, since Popper.js isn’t used in navbars.


Menu content

Headers

Add a header to label sections of actions in any dropdown menu.


            <ul class="dropdown-menu">
              <li><h6 class="dropdown-header">Dropdown header</h6></li>
              <li><a class="dropdown-item" href="#">Action</a></li>
              <li><a class="dropdown-item" href="#">Another action</a></li>
            </ul>
          

Dividers

Separate groups of related menu items with a divider.


            <ul class="dropdown-menu">
              <li><a class="dropdown-item" href="#">Action</a></li>
              <li><a class="dropdown-item" href="#">Another action</a></li>
              <li><a class="dropdown-item" href="#">Something else here</a></li>
              <li><hr class="dropdown-divider" /></li>
              <li><a class="dropdown-item" href="#">Separated link</a></li>
            </ul>
          

Text

Place any freeform text within a dropdown menu with text and use spacing utilities. Note that you’ll likely need additional sizing styles to constrain the menu width.


            <div class="dropdown-menu p-4 text-muted" style="max-width: 200px;">
              <p>
                Some example text that's free-flowing within the dropdown menu.
              </p>
              <p class="mb-0">
                And this is more example text.
              </p>
            </div>
          

Forms

Put a form within a dropdown menu, or make it into a dropdown menu, and use margin or padding utilities to give it the negative space you require.


            <div class="dropdown-menu">
              <form class="px-4 py-3">
                <!-- Email input -->
                <div class="form-outline mb-4">
                  <input type="email" id="form1Example1" class="form-control" />
                  <label class="form-label" for="form1Example1">Email address</label>
                </div>

                <!-- Password input -->
                <div class="form-outline mb-4">
                  <input type="password" id="form1Example2" class="form-control" />
                  <label class="form-label" for="form1Example2">Password</label>
                </div>

                <!-- 2 column grid layout for inline styling -->
                <div class="row mb-4">
                  <div class="col d-flex justify-content-center">
                    <!-- Checkbox -->
                    <div class="form-check">
                      <input
                        class="form-check-input"
                        type="checkbox"
                        value=""
                        id="form1Example3"
                        checked
                      />
                      <label class="form-check-label" for="form1Example3">
                        Remember me
                      </label>
                    </div>
                  </div>

                  <div class="col">
                    <!-- Simple link -->
                    <a href="#!">Forgot password?</a>
                  </div>
                </div>

                <!-- Submit button -->
                <button type="submit" class="btn btn-primary btn-block">Sign in</button>
              </form>
              <div class="dropdown-divider"></div>
              <a class="dropdown-item" href="#">New around here? Sign up</a>
              <a class="dropdown-item" href="#">Forgot password?</a>
            </div>
          

            <div class="dropdown">
              <button
                class="btn btn-primary dropdown-toggle"
                type="button"
                data-toggle="dropdown"
                aria-expanded="false"
              >
                Dropdown form
              </button>
              <div class="dropdown-menu">
                <form class="px-4 py-3">
                  <!-- Email input -->
                  <div class="form-outline mb-4">
                    <input type="email" id="form1Example1" class="form-control" />
                    <label class="form-label" for="form1Example1">Email address</label>
                  </div>

                  <!-- Password input -->
                  <div class="form-outline mb-4">
                    <input type="password" id="form1Example2" class="form-control" />
                    <label class="form-label" for="form1Example2">Password</label>
                  </div>

                  <!-- 2 column grid layout for inline styling -->
                  <div class="row mb-4">
                    <div class="col d-flex justify-content-center">
                      <!-- Checkbox -->
                      <div class="form-check">
                        <input
                          class="form-check-input"
                          type="checkbox"
                          value=""
                          id="form1Example3"
                          checked
                        />
                        <label class="form-check-label" for="form1Example3">
                          Remember me
                        </label>
                      </div>
                    </div>

                    <div class="col">
                      <!-- Simple link -->
                      <a href="#!">Forgot password?</a>
                    </div>
                  </div>

                  <!-- Submit button -->
                  <button type="submit" class="btn btn-primary btn-block">Sign in</button>
                </form>
                <div class="dropdown-divider"></div>
                <a class="dropdown-item" href="#">New around here? Sign up</a>
                <a class="dropdown-item" href="#">Forgot password?</a>
              </div>
            </div>
          

Dropdown options

Use data-offset or data-reference to change the location of the dropdown.


          <div class="d-flex">
            <div class="dropdown mr-1">
              <button
                type="button"
                class="btn btn-primary dropdown-toggle"
                id="dropdownMenuOffset"
                data-toggle="dropdown"
                aria-expanded="false"
                data-offset="10,20"
              >
                Offset
              </button>
              <ul class="dropdown-menu" aria-labelledby="dropdownMenuOffset">
                <li><a class="dropdown-item" href="#">Action</a></li>
                <li><a class="dropdown-item" href="#">Another action</a></li>
                <li><a class="dropdown-item" href="#">Something else here</a></li>
              </ul>
            </div>
            <div class="btn-group">
              <button type="button" class="btn btn-primary">Reference</button>
              <button
                type="button"
                class="btn btn-primary dropdown-toggle dropdown-toggle-split"
                id="dropdownMenuReference"
                data-toggle="dropdown"
                aria-expanded="false"
                data-reference="parent"
              >
                <span class="sr-only">Toggle Dropdown</span>
              </button>
              <ul class="dropdown-menu" aria-labelledby="dropdownMenuReference">
                <li><a class="dropdown-item" href="#">Action</a></li>
                <li><a class="dropdown-item" href="#">Another action</a></li>
                <li><a class="dropdown-item" href="#">Something else here</a></li>
                <li><hr class="dropdown-divider" /></li>
                <li><a class="dropdown-item" href="#">Separated link</a></li>
              </ul>
            </div>
          </div>
        

Dropdowns - API


Usage

Via data attributes or JavaScript, the dropdown plugin toggles hidden content (dropdown menus) by toggling the .show class on the parent list item. The data-toggle="dropdown" attribute is relied on for closing dropdown menus at an application level, so it’s a good idea to always use it.

Note:
On touch-enabled devices, opening a dropdown adds empty mouseover handlers to the immediate children of the <body> element. This admittedly ugly hack is necessary to work around a quirk in iOS’ event delegation, which would otherwise prevent a tap anywhere outside of the dropdown from triggering the code that closes the dropdown. Once the dropdown is closed, these additional empty mouseover handlers are removed.

Via data attributes

Add data-toggle="dropdown" to a link or button to toggle a dropdown.


          <div class="dropdown">
            <button id="dLabel" type="button" data-toggle="dropdown" aria-expanded="false">
              Dropdown trigger
            </button>
            <ul class="dropdown-menu" aria-labelledby="dLabel">
              ...
            </ul>
          </div>
        

Via JavaScript

Call the dropdowns via JavaScript:


          var dropdownElementList = [].slice.call(document.querySelectorAll('.dropdown-toggle'))
          var dropdownList = dropdownElementList.map(function (dropdownToggleEl) {
            return new mdb.Dropdown(dropdownToggleEl)
          })
        

data-toggle="dropdown" still required:
Regardless of whether you call your dropdown via JavaScript or instead use the data-api, data-toggle="dropdown" is always required to be present on the dropdown’s trigger element.


Options

Options can be passed via data attributes or JavaScript. For data attributes, append the option name to data-, as in data-offset="".

Name Type Default Description
offset number | string | function 0

Offset of the dropdown relative to its target.

When a function is used to determine the offset, it is called with an object containing the offset data as its first argument. The function must return an object with the same structure. The triggering element DOM node is passed as the second argument.

For more information refer to Popper.js's offset docs.

flip boolean true Allow Dropdown to flip in case of an overlapping on the reference element. For more information refer to Popper.js's flip docs.
boundary string | element 'scrollParent' Overflow constraint boundary of the dropdown menu. Accepts the values of 'viewport', 'window', 'scrollParent', or an HTMLElement reference (JavaScript only). For more information refer to Popper.js's preventOverflow docs.
reference string | element 'toggle' Reference element of the dropdown menu. Accepts the values of 'toggle', 'parent', or an HTMLElement reference. For more information refer to Popper.js's referenceObject docs.
display string 'dynamic' By default, we use Popper.js for dynamic positioning. Disable this with static.
popperConfig null | object null To change Bootstrap's default Popper.js config, see Popper.js's configuration

Note when boundary is set to any value other than 'scrollParent', the style position: static is applied to the .dropdown container.


Methods

Method Description
toggle Toggles the dropdown menu of a given navbar or tabbed navigation.
show Shows the dropdown menu of a given navbar or tabbed navigation.
hide Hides the dropdown menu of a given navbar or tabbed navigation.
update Updates the position of an element's dropdown.
dispose Destroys an element's dropdown.
getInstance Static method which allows you to get the dropdown instance associated with a DOM element.

          var myDropdown = document.getElementById('myDropdown')
          var bsDropdown = new mdb.Dropdown(myDropdown)
          bsDropdown.show()
        

Events

All dropdown events are fired at the .dropdown-menu's parent element and have a relatedTarget property, whose value is the toggling anchor element. hide.bs.dropdown and hidden.bs.dropdown events have a clickEvent property (only when the original Event type is click) that contains an Event Object for the click event.

Method Description
show.bs.dropdown Fires immediately when the show instance method is called.
shown.bs.dropdown Fired when the dropdown has been made visible to the user and CSS transitions have completed.
hide.bs.dropdown Fires immediately when the hide instance method has been called.
hidden.bs.dropdown Fired when the dropdown has finished being hidden from the user and CSS transitions have completed.

          var myDropdown = document.getElementById('myDropdown')
          myDropdown.addEventListener('show.bs.dropdown', function () {
            // do something...
          })
        

Import

MDB UI KIT also works with module bundlers. Use the following code to import this component:


        import { Dropdown } from 'mdb-ui-kit';