这是我第一次在论坛发帖。必要时指导我
我正在尝试为基本网页编辑（使用 Wordpress）设置模板，并且在菜单方面遇到了很多麻烦。该网站在这里： http: //munchkingraphicdesign-uat.com/devsite/
我最终设法设置了一个似乎工作正常的纯 CSS 菜单（3 级），尽管我无法控制浮动（子菜单总是垂直浮动，无论我进行什么更改，我都无法让它们水平浮动）。在有人问我为什么要这样做之前 - 这是为了测试我自己和代码以查看它是否设置正确。没有完全做到这一点。
然后我忽略了这一点并继续查看是否可以通过 jQuery 为它添加一些效果。我正确地初始化了 jQuery 并添加了一些我认为可以让我滑动下拉的代码。
在 Chrome 中似乎没问题 - 但第 3 级不会滑动，因此我认为会依赖 CSS。在 Internet Explorer 8 中，当我移动到第 2 级下拉菜单时会出现闪烁，并且第 3 级从零高度上下弹跳到完全。
我什至无法在我的本地站点上复制它。它在那里根本行不通。
任何善良的灵魂可以给我任何指示吗？也许我想在我能走路之前跑步，但我担心我什至没有掌握 CSS 代码的基础知识。
很抱歉，但也有一些注释掉的代码，因为我正在努力学习。那些在他们之后有 _NULL 的人添加了这个以使 jquery 能够正常工作，因为 _NULL 意味着 html 不再引用它们。
这段代码怎么能更好，我怎样才能用 jQuery 将良好的下拉菜单提升到三个级别？
非常感谢
下面是 jQuery，但 css 也是正确的关键
<script type="text/javascript">
jQuery(document).ready(function($) {/*normally loads in noconflickmode, so have to use this line to be able to use the $ sign*/
($("#menubar ul li").hover(function(){
$(this).addClass("hover");
$('ul:first',this).slideDown(400);
},
function(){
$(this).removeClass("hover");
$('ul:first',this).slideUp(400);
});
$("#menubar ul li ul li:has(ul)").find("a:first").append(" » ");
});
</script>
所以CSS是
#menubar-outer { /*container box with no colour. Used to position inner div*/
background-color: #D5CBA7;
position: relative;/*Needs to be explicitly set for z-index*/
z-index: 50;/*Needed for IE7*/
width: 100%;
margin: 0 0 0px 0;/*Use lower margin for lower line tab effect. Use a negative offset on left to align*/
padding: 0;
text-align: left;/*CONTROLS overall position of menu. Right, left or center*/
/*border-bottom: 1px solid #c0c0c0;*/
}
#menubar { /*inner container box..Sets space and fonts*/
/*background-color:blue;*/
display: inline-block;
position: relative;
z-index: 50;
margin: 0 0 0px 0px;/*for space around the menu first row*/
padding: 0;
font-size: 1em;
text-transform: uppercase;
vertical-align: bottom;/*needed to remove automatic inline-block additional 5px margin*/ /*border: 1px solid black;*/
}
#menubar a {/*The element containing the words*/
/*background-color: #dbdbdb; *//*color of main menu*/
display: block; /*using block rather than inline makes entire block, not just the text clickable*/
/*height: 15px;*//*CONTROLS height of menu item on first row together with "li li a" which controls for subsequent rows*/
padding: 10px 15px; /*space around the menu items*/
line-height: 15px;/*spacing between lines on same menu item*/
text-align: left;/*CONTROLS centred menu items or left/right aligned. "a" element used rather than li which doesn't work in IE7. Affects drop downs so important*/
}
#menubar li li a { /*Second and third level rows. */
/*height: 30px;*/ /*Needed for styling different height on first row*/
/*padding: 7px 6px;*//*Needed for styling different padding than first row*/
/*background-color: #D5CBA7;*//*CONTROLS filled background color for dropdowns. Important because above active page highlights will override otherwise*/
}
#menubar li:first-child {
border-left: none;/*accompanies divider&box line aboves. Use "none" if you are using seperators and add in e.g. "1px solid #c0c0c0"" if borders*/
}
#menubar li { /* fixes dimensions of all level menu elements. Turns menu into horizontal*/
float: left;/*makes the menu horizontal. Needed above in "a" for ie6 but causes compatibility probs*/
position: relative;/*need this to ensure that the following div can be absolutely positioned*/ /*width: 130px;*/ /*CONTROLS first row menu item spacing. Width needed for li rather than "a" to work in ie7*/
margin: 0 0px 0 0;/*THIS creates gaps between items*/
/*border-top: 1px solid #c0c0c0;
border-right: 1px solid #c0c0c0;
border-bottom: 1px solid #c0c0c0;/*Use border top right and bottom only if you want surrounding boxes*/
border-left: 2px solid #ffffff;/*Use by itself if you want dividers, together with above if seperated boxes or"none" for joined boxes (each box uses the folowing box's right border except the first child)*/
/*border-radius: 4px 4px 0px 0px;
-moz-border-radius: 4px 4px 0px 0px;
-khtml-border-radius: 4px 4px 0px 0px;
-webkit-border-radius: 4px 4px 0px 0px;*/
}
#menubar li:last-child {
border-right: 2px solid #ffffff;/*accompanies divider&box line aboves. Use "none" if you are using seperators and add in e.g. "1px solid #c0c0c0"" if borders*/
}
#menubar ul ul li:last-child {
border-right: 2px solid #ffffff;/*accompanies divider&box line aboves. Use "none" if you are using seperators and add in e.g. "1px solid #c0c0c0"" if borders*/
}
#menubar ul ul li:first-child {
border-top: 2px solid #ffffff;/*If boxes used on dropdown. Used to override border-top none below "li li"*/
border-left: 2px solid #ffffff;/*If boxes used on dropdown. Use to override "li:first-child" on the previous level dropdown*/
}
#menubar ul ul li {/*Dropdown items*/
background-color: #D5CBA7;/*KEEP as background color needed fir IE6 to select over another div*/
left: -2px;/*CONTROLS for border. 0 if no border. -1px if border is 1px. Adjust together with "li" above, "li:first-child" above, "border" below on this ID and "top" and "left" on "ul ul li:hover ul"*/
width: 130px;/*needed to make the whole line selectable*/
margin: 0;/*Needed to reset dropdowns if margin used on first level*/
border-top: none;
border-right: 2px solid #ffffff;
border-bottom: 2px solid #ffffff;
border-left: 2px solid #ffffff;/*Use border right, bottom and left only if you want surrounding boxes. Also adjust "left" in this same ID (border top is "none")*/ /*border-left: none;/*Use "border-left:none" only if you want dividers and for them to be removed on every sublevel*/
/*border-radius: 0px 0px 0px 0px;
-moz-border-radius: 0px 0px 0px 0px;
-khtml-border-radius: 0px 0px 0px 0px;
-webkit-border-radius: 0px 0px 0px 0px;*/
}
#menubar ul ul, #menubar ul li:hover ul ul { /* Hide all the dropdowns (submenus) */
display: none;
/*visibility:hidden;*/
position: absolute;/*absolute means that it is absolutely positioned to the 'relative' div before it*/
left: 0px;/*needed for IE7*/
z-index: 60;/*for hovering over itself*/
width: 130px; /*CONTROLS width of colored background in dropdown levels. Needed to float left*/
}
#menubar ul li:hover ul_NULL {/*Second level submenus. Container box that the li's sit within and on top of. Displays when li are hovered on*/
/*background-color:red;*/
display: block;
}
#menubar ul ul li:hover ul {/*third level submenus. Container box that the li's sit within and on top of. Displays when li are hovered on*/
/*background-color:red;*/
display:block;
position: absolute;/*absolute means that it is absolutely positioned to the 'relative' div before it*/
top: -2px; /*CONTROLS for border. 0 positions at the top with no border or -1 for border*/
left: 132px;/*CONTROLS width. Match to "li" if width given + BORDER + 1 BORDER. 100% positions 1 col over to right, incl margin.*/
z-index: 60;/*for hovering over itself*/
width: 130px; /*CONTROLS width of colored background in dropdown levels. Needed to float left*/
}
#menubar ul ul li:hover ul_NULL {/*third level submenus. Container box that the li's sit within and on top of. Displays when li are hovered on*/
/*background-color:red;*/
display: block;
}
最后是html
<div id="menubar-outer">
<span id="menubar" class="linkclass-mainmenu">
<!--span needs to be used for ie7 to be able to use text-align on variable width-->
<div class="menu">
<ul>
<li class="page_item page-item-21">
<a href="http://munchkingraphicdesign-uat.com/devsite/adventures-of-huckleberry-finn/">
Adventures of Huckleberry Finn
</a>
<ul class='children'>
<li class="page_item page-item-23">
<a href="http://munchkingraphicdesign-uat.com/devsite/adventures-of-huckleberry-finn/conflict-between-civilization-and-natural-life/">
Conflict between civilization and natural life
</a>
<ul class='children'>
<li class="page_item page-item-22">
<a href="http://munchkingraphicdesign-uat.com/devsite/adventures-of-huckleberry-finn/conflict-between-civilization-and-natural-life/the-adventures-of-tom-sawyer/">
The Adventures of Tom Sawyer
</a>
</li>
</ul>
</li>
<li class="page_item page-item-24">
<a href="http://munchkingraphicdesign-uat.com/devsite/adventures-of-huckleberry-finn/intellectual-and-moral-education/">
Intellectual and Moral Education
</a>
</li>
</ul>
</li>
<li class="page_item page-item-31">
<a href="http://munchkingraphicdesign-uat.com/devsite/contact-us/">
Contact Us
</a>
</li>
<li class="page_item page-item-9">
<a href="http://munchkingraphicdesign-uat.com/devsite/duke-and-the-king/">
Duke and the King
</a>
<ul class='children'><li class="page_item page-item-10">
<a href="http://munchkingraphicdesign-uat.com/devsite/duke-and-the-king/conflict-between-civilization-and-natural-life/">
Conflict between civilization and natural life
</a>
</li>
<li class="page_item page-item-12">
<a href="http://munchkingraphicdesign-uat.com/devsite/duke-and-the-king/parodies-of-popular-romance-novels/">
Parodies of Popular Romance Novels
</a>
</li>
<li class="page_item page-item-11">
<a href="http://munchkingraphicdesign-uat.com/devsite/duke-and-the-king/the-hypocrisy-of-civilized-society/">
The Hypocrisy of Civilized Society
</a>
</li>
</ul>
</li>
<li class="page_item page-item-17">
<a href="http://munchkingraphicdesign-uat.com/devsite/jims-escape/">
Jim’s escape
</a>
<ul class='children'>
<li class="page_item page-item-18">
<a href="http://munchkingraphicdesign-uat.com/devsite/jims-escape/childhood/">
Childhood
</a>
</li>
<li class="page_item page-item-19">
<a href="http://munchkingraphicdesign-uat.com/devsite/jims-escape/conflict-between-civilization-and-natural-life/">
Conflict between civilization and natural life
</a>
</li>
<li class="page_item page-item-20">
<a href="http://munchkingraphicdesign-uat.com/devsite/jims-escape/reception/">
Reception
</a>
</li>
</ul>
</li>
<li class="page_item page-item-5">
<a href="http://munchkingraphicdesign-uat.com/devsite/mockery-of-religion/">
Mockery of Religion
</a>
<ul class='children'>
<li class="page_item page-item-8">
<a href="http://munchkingraphicdesign-uat.com/devsite/mockery-of-religion/duke-and-the-king/">
Duke and the King
</a>
</li>
<li class="page_item page-item-6">
<a href="http://munchkingraphicdesign-uat.com/devsite/mockery-of-religion/jims-escape/">
Jim’s escape
</a>
</li>
<li class="page_item page-item-7">
<a href="http://munchkingraphicdesign-uat.com/devsite/mockery-of-religion/life-in-st-petersburg/">
Life in St. Petersburg
</a>
</li>
</ul>
</li>
</ul>
</div>
</span><!-- end #menubar -->
<div class="clearfix">
</div><!--Used when floating. Clearfix comes before closing div of non-floated element-->
</div><!--end #menubar-outer-->