JSFiddle - React, Tailwind, and code Playground

HTML

<div id="nav-wrapper">
    <ul class="dropdown dropdown-linear" id="nav">
        <li class="active"><span class="dir"><a href="#">HOME</a></span><span id="menus-spacer">|</span>
        </li>
        <li><span class="dir"><a href="#">ABOUT US</a></span><span id="menus-spacer">|</span>
        </li>
        <li><span class="dir"><a href="#">ARTICLES</a></span><span id="menus-spacer">|</span>
        </li>
        <li><span class="dir"><a href="#">CATEGORIES</a></span><span id="menus-spacer">|</span>

            <ul>
                <li><a href="#">Politics</a><span id="menus-spacer">|</span>
                </li>
                <li><a href="#">Feature</a><span id="menus-spacer">|</span>
                </li>
                <li><a href="#">Economy</a><span id="menus-spacer">|</span>
                </li>
                <li><a href="#">Feature</a><span id="menus-spacer">|</span>
                </li>
                <li><a href="#">Business</a><span id="menus-spacer">|</span>
                </li>
            </ul>
        </li>
        <li><span class="dir"><a href="#">ARCHIVE</a></span><span id="menus-spacer">|</span>

            <ul>
                <li><a href="#">2013</a><span id="menus-spacer">|</span>
                </li>
                <li><a href="#">2012</a><span id="menus-spacer">|</span>
                </li>
                <li><a href="#">2011</a><span id="menus-spacer">|</span>
                </li>
                <li><a href="#">2010</a><span id="menus-spacer">|</span>
                </li>
                <li><a href="#">2009</a><span id="menus-spacer">|</span>
                </li>
            </ul>
        </li>
        <li><span class="dir"><a href="#">NEWS</a></span><span id="menus-spacer">|</span>
        </li>
    </ul>
</div>

CSS

#nav-wrapper, #nav-wrapper:link, #nav-wrapper:visited {
    text-decoration: none;
    font-size:14px;
    font-family: Helvetica, Tahoma, Arial, Verdana, sans-serif;
    font-weight:normal;
    height:35px;
    vertical-align:middle;
}
#nav-subMenuXX {
    float:left;
    height:0px;
    width:1000px;
    margin-bottom:5px;
    background-color:#fff;
}
#menus-spacer {
    width:2px;
    padding-right:5px;
    padding-left:5px;
    height:35px;
    color:#A78944;
    font-size:15px;
    font-family: Helvetica, Tahoma, Arial, Verdana, sans-serif;
}
.nav-subMenuIfSubmenu {
    float:left;
    height:35px;
    width:1000px;
    margin-bottom:5px;
}
/* DD CSS */
 ul.dropdown, ul.dropdown li, ul.dropdown ul {
    list-style: none;
    margin: 0;
    padding: 0;
}
ul.dropdown {
    position: relative;
    z-index: 597;
    float: left;
}
ul.dropdown li {
    float: left;
    min-height: 1px;
    line-height: 1.5em;
    vertical-align: middle;
    margin-left:5px;
    margin-right:5px;
}
ul.dropdown li.hover, ul.dropdown li:hover {
    position: relative;
    z-index: 599;
    cursor: default;
}
ul.dropdown ul {
    visibility: hidden;
    position: absolute;
    top: 100%;
    left: 0;
    z-index: 598;
    width: 100%;
    font-size:13px;
    background-color:#f1f1f1;
}
ul.dropdown ul li {
    float: none;
}
ul.dropdown ul ul {
    top: 0px;
    left: 99%;
}
ul.dropdown li:hover > ul {
    visibility: visible;
}
/* dd.linear.css*/
 ul.dropdown-linear {
    width: 100%;
}
ul.dropdown-linear ul li {
    float: left;
}
ul.dropdown-linear li.hover, ul.dropdown-linear li:hover {
    position: static;
}
ul.dropdown-linear ul ul {
    display: none !important;
}
ul.dropdown a, ul.dropdown span {
    display:inline;
    text-decoration: none;
    color:#373737;
}
/* -- Base style override -- */
 ul.dropdown li {
    padding: 0;
    border: none;
}
ul.dropdown ul a, ul.dropdown ul span {
}
/* -- Base style reinitiate: post-override activities -- */

/* -- Custom styles -- */
...

JavaScript

$(function () {
    $('ul.dropdown > li').on('mouseenter mouseleave', function () {
        if ($(this).find('ul').length > 0) {
            $(this).find('.dir').toggleClass('has-submenu');
        }
    });

});