如何在 ul 下拉菜单中显示选定的菜单项

我有一个下拉菜单，显示字体颜色供用户选择。目前，下拉列表显示“样式”，但是我希望菜单标题显示当前选择的值。这是代码：

HTML:

<div id="font_dropdown" class="dropdown">
    <nav id="primary_nav_wrap">
    <ul>
      <li class="current-menu-item"><a>
      <li><a href="#">Style</a>
        <ul class="font-names">
          <li style="font-family: Raleway"><a>Raleway</a></li>
          <li style="font-family: palatino"><a>Palatino</a></li>
          <li style="font-family: impact"><a>Impact</a></li>
          <li style="font-family: courier"><a>Courier</a></li>
          <li style="font-family: Copperplate"><a>Copperplate</a></li>
          <li style="font-family: Monospace"><a>Monospace</a></li>
          <li style="font-family: Fantasy"><a>Fantasy</a></li>
          <li style="font-family: Calibri"><a>Calibri</a></li>
          <li style="font-family: Cursive"><a>Cursive</a></li>
          <li style="font-family: Futura"><a>Futura</a></li>
          <li style="font-family: Rockwell"><a>Rockwell</a></li>
          <li style="font-family: Andale Mono"><a>Andale</a></li>
        </ul>
      </li>
    </ul>
    </nav>
  </div>

CSS:

#primary_nav_wrap
{
  margin-top:15px;
  font-family:raleway;


}

#primary_nav_wrap ul
{
  list-style:none;
  position:relative;
  float:left;
  margin:0;
  padding:0;
  font-family:raleway;

}

#primary_nav_wrap ul a
{
  display:block;
  text-decoration:none;
  font-weight:700;
  font-size:12px;
  line-height:32px;
  padding:0 15px;
  z-index:100;



}

#primary_nav_wrap ul li
{
  position:relative;
  float:left;
  margin:0px;
  padding:0;
  z-index:100;

}

#primary_nav_wrap ul li.current-menu-item
{
  background:#ddd;
  color: orange;
  z-index:100;

}

#primary_nav_wrap ul li:hover
{
  background:#F3F4F5;
  cursor: pointer;
  color: orange;
  z-index:100;
}

#primary_nav_wrap ul ul
{
  display:none;
  position:absolute;
  top:100%;
  left:0;
  background:#fff;
  padding:0;
  z-index:100;

}

#primary_nav_wrap ul ul li
{
  float:none;
  z-index:100;
  width:235px
}

#primary_nav_wrap ul ul a
{
  line-height:120%;
  padding:10px 10px;
  text-align: left;
  left: 100px;
  z-index:100;
}

#primary_nav_wrap ul ul ul
{
  top:0;
  z-index:100;
  left:100%
}

#primary_nav_wrap ul li:hover > ul
{
  display:list-item;
  color: orange;
  z-index:100;

JavaScript：

  $(document).on("click", '.font-names li a',  function() {    
      $("#imagewrap h3").css("font-family", $(this).parent().css("font-family"));
      $("#new_tile_font_style").val($(this).parent().css("font-family"));
   });

抱歉代码混乱，我对此还比较陌生。 谢谢！

下面是一些使用 jQuery 来完成此操作的代码：

$(".font-names > li").click(function() {
   $("#menutitle").text($(this).text()); 
});

您还需要添加一个id到您的菜单标题元素。

现场演示：

$(".font-names > li").click(function() {
   $("#menutitle").text($(this).text()); 
});

#primary_nav_wrap
{
  margin-top:15px;
  font-family:raleway;


}

#primary_nav_wrap ul
{
  list-style:none;
  position:relative;
  float:left;
  margin:0;
  padding:0;
  font-family:raleway;

}

#primary_nav_wrap ul a
{
  display:block;
  text-decoration:none;
  font-weight:700;
  font-size:12px;
  line-height:32px;
  padding:0 15px;
  z-index:100;



}

#primary_nav_wrap ul li
{
  position:relative;
  float:left;
  margin:0px;
  padding:0;
  z-index:100;

}

#primary_nav_wrap ul li.current-menu-item
{
  background:#ddd;
  color: orange;
  z-index:100;

}

#primary_nav_wrap ul li:hover
{
  background:#F3F4F5;
  cursor: pointer;
  color: orange;
  z-index:100;
}

#primary_nav_wrap ul ul
{
  display:none;
  position:absolute;
  top:100%;
  left:0;
  background:#fff;
  padding:0;
  z-index:100;

}

#primary_nav_wrap ul ul li
{
  float:none;
  z-index:100;
  width:235px
}

#primary_nav_wrap ul ul a
{
  line-height:120%;
  padding:10px 10px;
  text-align: left;
  left: 100px;
  z-index:100;
}

#primary_nav_wrap ul ul ul
{
  top:0;
  z-index:100;
  left:100%
}

#primary_nav_wrap ul li:hover > ul
{
  display:list-item;
  color: orange;
  z-index:100;
}

<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>
<div id="font_dropdown" class="dropdown">
    <nav id="primary_nav_wrap">
    <ul>
      <li class="current-menu-item"><a>
      <li><a id="menutitle" href="#">Style</a>
        <ul class="font-names">
          <li style="font-family: Raleway"><a>Raleway</a></li>
          <li style="font-family: palatino"><a>Palatino</a></li>
          <li style="font-family: impact"><a>Impact</a></li>
          <li style="font-family: courier"><a>Courier</a></li>
          <li style="font-family: Copperplate"><a>Copperplate</a></li>
          <li style="font-family: Monospace"><a>Monospace</a></li>
          <li style="font-family: Fantasy"><a>Fantasy</a></li>
          <li style="font-family: Calibri"><a>Calibri</a></li>
          <li style="font-family: Cursive"><a>Cursive</a></li>
          <li style="font-family: Futura"><a>Futura</a></li>
          <li style="font-family: Rockwell"><a>Rockwell</a></li>
          <li style="font-family: Andale Mono"><a>Andale</a></li>
        </ul>
      </li>
    </ul>
    </nav>
  </div>

JSFiddle 版本：https://jsfiddle.net/m129zd8m/