将子菜单拉伸到父菜单大小

Question

I am creating a horizontal dropdown menu with css and javascript. I have made the menu stretch to the width I want (956 px) and the menu options to spread out in this, but I don't know how to get the submenus as I want them. I want each one of them to have the same width as their parent. Anyone who can help me with this?

HTML:

<div id="nav">
  <div id="meny">
    <ul id="menu">
      <li class="dropmenu"><a href="#">Abcde</a>
        <ul class="submenu">
          <li><a href="#">1</a></li>
          <li><a href="#">2</a></li>
          <li><a href="#">3</a></li>
        </ul>
      </li>
      <li class="dropmenu"><a href="#">Fghijklmn</a>
        <ul class="submenu">
          <li><a href="#">1</a></li>
          <li><a href="#">2</a></li>
          <li><a href="#">3</a></li>
        </ul>
      </li>
      <li class="dropmenu"><a href="#">Shop</a>
        <ul class="submenu">
          <li><a href="#">1</a></li>
          <li><a href="#">2</a></li>
          <li><a href="#">3</a></li>
        </ul>
      </li>
    </ul>
  </div>
</div>

CSS:

#nav{
width: 956px;
margin-left: auto;
margin-right: auto;
}

#meny{
display: table;
width: 100%;
border-collapse: collapse;
border: none;
}

#menu{
display: table-row;
list-style: none;
}

.dropmenu{
display: table-cell;
background-color: #ff5b2e;
}

.dropmenu a{
display: block;
text-decoration: none;
text-align: center;
}

.submenu{
display: none;
list-style: none;
background: #ff5b2e;
padding: 0;
position: absolute;
}

.submenu li{
width: 100%;
}

JavaScript:

$(document).ready(function() {
  $('.dropmenu').hover(function() {
    $(this).find('.submenu').slideToggle(); 
  });
});

Answer 1

Fixed here

$(document).ready(function() {
  $('.dropmenu').hover(function() {
    $(this).find('.submenu').toggle(); 
      var width = $(this).css('width'); // find width of sub menu
      $(this).find('.submenu').css('width', width); // set the width of drop down here
  });
});

You can see it here http://jsfiddle.net/yb2p8aoj/

Answer 2

Ok, I feel like this should be solvable without javascript. Here's what I did:

(1) Remove position:absolute from .submenu (is there a reason why you wanted it there?)

.submenu{
display: none;
list-style: none;
background: #CC0000;
padding: 0;
width: auto;
}

(2) Move the background-color from .dropmenu to .dropmenu a

.dropmenu a {
display: block;
text-decoration: none;
text-align: center;
background-color: #ff5b2e;    
}

(3) Additionally, I noticed that when you hover over the submenu several times, the dropdown will toggle several times too. Note the stop() I added on this line on the js:

$(this).find('.submenu').stop().slideToggle();

Fiddle: http://jsfiddle.net/ouz0q5Lj/1/