Bootstrap 4 Display Dropdown Submenu on the Right Side

<link href="https://cdnjs.cloudflare.com/ajax/libs/twitter-bootstrap/4.5.0/css/bootstrap.min.css" rel="stylesheet" />
<nav class="navbar navbar-expand-xl navbar-dark bg-primary">

  <button class="navbar-toggler" type="button" data-toggle="collapse" data-target="#navbarSupportedContent" aria-controls="navbarSupportedContent" aria-expanded="false" aria-label="Toggle navigation">
        <span class="navbar-toggler-icon"></span>
    </button>

  <a class="navbar-brand" href="#">Company</a>

  <div class="collapse navbar-collapse" id="navbarSupportedContent">
    <form action="#" class="form-inline my-2 my-lg-0">
      <input class="form-control mr-sm-2" id="keyword" name="keyword" :value='keyword' type="text" placeholder="Search for jobs" />
      <input class="form-control mr-sm-2" id="location" name="location" :value='location' type="text" placeholder="Location" />
      <button class="btn btn-secondary my-2 my-sm-0" type="submit">Find Jobs</button>
    </form>

    <ul class="navbar-nav mr-auto">
      <li class="nav-item">
        <a href="#" class="nav-link active">
          <strong>Post Job</strong>
        </a>
      </li>
      <li class="nav-item">
        <a href="#" class="nav-link">
          <strong>Register</strong>
        </a>
      </li>
      <li class="nav-item">
        <a href="#" class="nav-link">
          <strong>Profile</strong>
        </a>
      </li>
      <li class="nav-item">
        <a href="#" class="nav-link">
          <strong>My Jobs</strong>
        </a>
      </li>
      <li class="nav-item">
        <a href="#" class="nav-link">
          <strong>My Searches</strong>
        </a>
      </li>
      <li class="nav-item">
        <a href="#" class="nav-link">
          <strong>Employer Dashboard</strong>
        </a>
      </li>
      <li class="nav-item">
        <a href="#" class="nav-link">
          <strong>Login</strong>
        </a>
      </li>
      <li class="nav-item">
        <a href="#" class="nav-link">
          <strong>Logout</strong>
        </a>
      </li>
    </ul>

    <ul class="navbar-nav">
      <li class="nav-item dropdown">
        <a class="nav-link dropdown-toggle" href="#" id="navbarDropdown" role="button" data-toggle="dropdown" aria-haspopup="true" aria-expanded="false">
          <strong>Account</strong>
        </a>
        <div class="dropdown-menu dropdown-menu-right" aria-labelledby="navbarDropdown">
          <a class="dropdown-item">
            <strong>Register</strong>
          </a>
          <a href="#" class="dropdown-item">
            <strong>Profile</strong>
          </a>
          <a href="#" class="dropdown-item">
            <strong>My Jobs</strong>
          </a>
          <a href="#" class="dropdown-item">
            <strong>My Searches</strong>
          </a>
          <a href="#" class="dropdown-item">
            <strong>Employer Dashboard</strong>
          </a>
          <a href="#" class="dropdown-item">
            <strong>Login</strong>
          </a>
          <a href="#" class="dropdown-item">
            <div class="dropdown-divider"></div>
            <strong>Logout</strong>
          </a>
        </div>
      </li>
    </ul>
  </div>
</nav>

<script src="https://cdnjs.cloudflare.com/ajax/libs/jquery/3.5.1/jquery.min.js"></script>
<script src="https://cdnjs.cloudflare.com/ajax/libs/popper.js/2.4.2/umd/popper.min.js"></script>
<script src="https://cdnjs.cloudflare.com/ajax/libs/twitter-bootstrap/4.5.0/js/bootstrap.min.js"></script>

Bootstrap Navbar Dropdown Menu Items Right

Bootstrap 5 (update 2021)

Use the dropdown-menu-end class on the dropdown-menu to align the items inside the menu right..

<div class="dropdown-menu dropdown-menu-end">
    <a class="dropdown-item" href="#">Link</a>
    <a class="dropdown-item" href="#">Link</a>
    <a class="dropdown-item" href="#">Link</a>
</div>

https://codeply.com/p/kWLLKdjdpC

Bootstrap 4 (original answer)

Use the dropdown-menu-right class to align the items inside the menu right..

<div class="dropdown-menu dropdown-menu-right text-right">
    <a class="dropdown-item" href="#">Link</a>
    <a class="dropdown-item" href="#">Link</a>
    <a class="dropdown-item" href="#">Link</a>
</div>

http://codeply.com/go/6Mf9aK0P8G

Bootstrap: Position of dropdown menu relative to navbar item

This is the effect that we're trying to achieve:

The classes that need to be applied changed with the release of Bootstrap 3.1.0 and again with the release of Bootstrap 4. If one of the below solutions doesn't seem to be working double check the version number of Bootstrap that you're importing and try a different one.

Before v3.1.0

You can use the pull-right class to line the right hand side of the menu up with the caret:

<li class="dropdown">
  <a class="dropdown-toggle" href="#">Link</a>
  <ul class="dropdown-menu pull-right">
     <li>...</li>
  </ul>
</li>

Fiddle: http://jsfiddle.net/joeczucha/ewzafdju/

After v3.1.0

As of v3.1.0, we've deprecated .pull-right on dropdown menus. To
right-align a menu, use .dropdown-menu-right. Right-aligned nav
components in the navbar use a mixin version of this class to
automatically align the menu. To override it, use .dropdown-menu-left.

You can use the dropdown-right class to line the right hand side of the menu up with the caret:

<li class="dropdown">
  <a class="dropdown-toggle" href="#">Link</a>
  <ul class="dropdown-menu dropdown-menu-right">
     <li>...</li>
  </ul>
</li>

Fiddle: http://jsfiddle.net/joeczucha/1nrLafxc/

The class for Bootstrap 4 are the same as Bootstrap > 3.1.0, just watch out as the rest of the surrounding markup has changed a little:

<li class="nav-item dropdown">
  <a class="nav-link dropdown-toggle" href="#">
    Link
  </a>
  <div class="dropdown-menu dropdown-menu-right">
    <a class="dropdown-item" href="#">...</a>
  </div>
</li>

Fiddle: https://jsfiddle.net/joeczucha/f8h2tLoc/

Again, very similar for Bootstrap 5 except now it's dropdown-menu-end

<li class="nav-item dropdown">
  <a class="nav-link dropdown-toggle" href="#">
    Link
  </a>
  <div class="dropdown-menu dropdown-menu-end">
    <a class="dropdown-item" href="#">...</a>
  </div>
</li>

Fiddle: https://jsfiddle.net/joeczucha/psnz2u36/

Multilevel Navbar on Bootstrap 4 (Bootswatch) on right side

You need to adjust the left position of the submenus...

.dropdown-submenu>.dropdown-menu {
    top: 0;
    left: -10rem; /* 10rem is the min-width of dropdown-menu */
    position: relative;
}

Bootstrap 4 Dropdown Submenus Right

Related: Bootstrap dropdown sub menu missing

Bootstrap: How do you open all the submenus to left side in Dropdown 4 and 5?

If I understand right you can add following lines the css class:

left: auto;
right: 100%;
margin-left: 0;
margin-right: -1px;

The css class must be like this:

.dropdown-submenu>.dropdown-menu{  top:0;  left: auto;  right: 100%;  margin-left: 0;  margin-right: -1px;  margin-top:-6px;   -webkit-border-radius:0 6px 6px 6px;  -moz-border-radius:0 6px 6px 6px;  border-radius:0 6px 6px 6px;}