How to create dropdown for <li> using bootstrap

I need to make drop down for one <li> element

<div class="head-nav">
                <span class="menu"></span>
                <ul class="cl-effect-15">
                    <li><a href="index.php" data-hover="HOME">HOME</a></li>
                    <li><a href="about.php">ABOUT</a></li>
                    <li><a href="contact.php" data-hover="CONTACT">CONTACT</a></li>
                    <li><a href="#" data-hover=" "> </a></li>
                    <li><a href="3" data-hover=" "> </a></li>
                    <li class="pull-right"><a href="#" data-hover="More option" tabindex="-1">More options</a>
                            <ul class="dropdown-menu">
                                <li><a href="#" data-hover=" ">one</a></li>
                                <li><a href="3" data-hover=" ">two</a></li>
                            </ul>
                    </li>
                    <li class="pull-right"><a href="logout.php" data-hover="logout">logout</a></li>
                    <div class="clearfix"> </div>
                </ul>
            </div>

but sub menu doesn't opens

using Bootstrap v3.1.1

NOTE : even adding after jquery also doesn't works

Solution

You have to use

<li class="dropdown">
   <a href="#" class="dropdown-toggle" data-toggle="dropdown" role="button" aria-expanded="false">Dropdown <span class="caret"></span></a>
    <ul class="dropdown-menu" role="menu">
       <li><a href="#">Action</a></li>
       <li><a href="#">Another action</a></li>
       <li><a href="#">Something else here</a></li>
       <li class="divider"></li>
       <li><a href="#">Separated link</a></li>
       <li class="divider"></li>
       <li><a href="#">One more separated link</a></li>
    </ul>
</li>

In your code, you miss class "dropdown" for li tag. For correct dropdown, you have to use this sintax:

<li class="dropdown">
 <a href="#" class="dropdown-toggle" data-toggle="dropdown" role="button" aria-expanded="false">Item Dropdown <span class="caret"></span></a>
  <ul class="dropdown-menu" role="menu">
<!--- Put your menu-item here -->
  </ul>
</li>

You can refer the Bootstrap documentation here

The issue is causing by the missing of data-toggle="dropdown" in tag a