Bootstrap - Dropdowns | Adglob Infosystem Pvt Ltd

In this guide, we will discuss Dropdowns in Bootstrap. This chapter will highlight about Bootstrap dropdown menus. Dropdown menus are toggleable, contextual menus for displaying links in a list format. This can be made interactive with the dropdown JavaScript plugin.

To use dropdown, just wrap the dropdown menu within the class .dropdown.The following example demonstrates a basic dropdown menu −

<div class = "dropdown">
   
   <button type = "button" class = "btn dropdown-toggle" id = "dropdownMenu1" data-toggle = "dropdown">
      Topics
      <span class = "caret"></span>
   </button>
   
   <ul class = "dropdown-menu" role = "menu" aria-labelledby = "dropdownMenu1">
      <li role = "presentation">
         <a role = "menuitem" tabindex = "-1" href = "#">Java</a>
      </li>
      
      <li role = "presentation">
         <a role = "menuitem" tabindex = "-1" href = "#">Data Mining</a>
      </li>
      
      <li role = "presentation">
         <a role = "menuitem" tabindex = "-1" href = "#">
            Data Communication/Networking
         </a>
      </li>
      
      <li role = "presentation" class = "divider"></li>
      
      <li role = "presentation">
         <a role = "menuitem" tabindex = "-1" href = "#">Separated link</a>
      </li>
   </ul>
   
</div>

Options

Alignment

Align the dropdown menu to right by adding the class .pull-right to .dropdown-menu. The following example demonstrates this −

<div class = "dropdown">
   
   <button type = "button" class = "btn dropdown-toggle" id = "dropdownMenu1" data-toggle = "dropdown">
      Topics
      <span class = "caret"></span>
   </button>
   
   <ul class = "dropdown-menu pull-right" role = "menu" aria-labelledby = "dropdownMenu1">
      <li role = "presentation">
         <a role = "menuitem" tabindex = "-1" href = "#">Java</a>
      </li>
      
      <li role = "presentation">
         <a role = "menuitem" tabindex = "-1" href = "#">Data Mining</a>
      </li>
      
      <li role = "presentation">
         <a role = "menuitem" tabindex = "-1" href = "#">
            Data Communication/Networking
         </a>
      </li>
      
      <li role = "presentation" class = "divider"></li>
      
      <li role = "presentation">
         <a role = "menuitem" tabindex = "-1" href = "#">Separated link</a>
      </li>
   </ul>
   
</div>

Headers

You can add a header to label sections of actions in any dropdown menu by using the class dropdown-header. The following example demonstrates this −

<div class = "dropdown">
   
   <button type = "button" class = "btn dropdown-toggle" id = "dropdownMenu1" data-toggle = "dropdown">
      Topics
      <span class = "caret"></span>
   </button>
   
   <ul class = "dropdown-menu" role = "menu" aria-labelledby = "dropdownMenu1">
      <li role = "presentation" class = "dropdown-header">Dropdown header</li>
      
      <li role = "presentation" >
         <a role = "menuitem" tabindex = "-1" href = "#">Java</a>
      </li>
      
      <li role = "presentation">
         <a role = "menuitem" tabindex = "-1" href = "#">Data Mining</a>
      </li>
      
      <li role = "presentation">
         <a role = "menuitem" tabindex = "-1" href = "#">
            Data Communication/Networking
         </a>
      </li>
      
      <li role = "presentation" class = "divider"></li>
      <li role = "presentation" class = "dropdown-header">Dropdown header</li>
      
      <li role = "presentation">
         <a role = "menuitem" tabindex = "-1" href = "#">Separated link</a>
      </li>
   </ul>
   
</div>

Next Topic : Click Here