我正在设计一个网站，在导航中我有 2 个带有下拉菜单的链接（“关于”和“服务”）。当您将鼠标悬停在链接上时，会出现下拉菜单，然后当您单击链接时，下拉菜单会消失，然后如果您再次单击它，下拉菜单会重新出现。所以基本上，为了去那个页面，你必须三次点击链接。有谁知道我可以做些什么来改变它，所以只需单击一下即可将您带到页面？
这是我的 HTML 代码中导航的样子：
<nav id="nav">
<ul>
<li><a href="index.html">Home</a></li>
<li>
<span><a href="about.html">About ▼</a></span>
<ul>
<li><a href="background.html">Background</a></li>
<li><a href="why.html">Why Choose Us?</a></li>
<li><a href="management.html">Management</a></li>
<li><a href="university.html">Financial University</a></li>
<li><a href="media.html">Media ►</a>
<ul>
<li><a href="television.html">Television Appearances</a></li>
<li><a href="articles.html">Articles</a></li>
<li><a href="books.html">Books</a></li>
<li><a href="financialsafari.html">Financial Safari</a></li>
<li><a href="photos.html">Photos</a></li>
<li><a href="videos.html">Videos</a></li>
</ul>
</li>
</ul>
</li>
<li>
<span><a href="services.html">Services ▼</a></span>
<ul>
<li><a href="retire.html">Retirement Planning</a></li>
<li><a href="annuities.html">Annuities</a></li>
<li><a href="estate.html">Estate Planning</a></li>
<li><a href="insurance.html">Insurance</a></li>
<li><a href="business.html">Business Consulting</a></li>
<li><a href="taxes.html">Tax Planning</a></li>
<li><a href="invest.html">Investment Management</a></li>
</ul>
</li>
<li><a href="blog">Blog</a></li>
<li><a href="contact.html">Contact</a></li>
</ul>
</nav>
这是相关的CSS：
#nav
{ position: absolute; right: 2em; line-height: 5.5em; }
#nav > ul > li
{ float: left; padding: 0 0.8em 0 0.8em; }
#nav > ul > li > a,
#nav > ul > li > span
{ color: #fff; text-decoration: none; text-transform: uppercase; font-weight: 800; font-size: 0.95em; letter-spacing: 0.075em; padding: 0.5em 0.8em 0.5em 0.8em; border-radius: 6px; outline: 0; }
#nav a
{ color: #FFF; text-decoration: none; }
#nav a:visited
{ color: #FFF; text-decoration: none; }
#nav > ul > li.active > a,
#nav > ul > li.current_page_item > a,
#nav > ul > li.active > span,
#nav > ul > li.current_page_item > span
{ background: rgba(0,0,0,0.15); box-shadow: inset 1px 1px 0px 0px rgba(0,0,0,0.025), 1px 1px 0px 0px rgba(255,255,255,0.025); }
#nav > ul > li:last-child
{ padding-right: 0; }
#nav > ul > li > ul
{ display: none; margin-top: -2px; }
编辑：我发现下拉菜单是由一个名为 dropotron 的 jQuery 控制的。这是有关 dropotron 的 CSS：
.dropotron
{
background-image: -moz-linear-gradient(top, rgba(38,38,38,0.95), rgba(59,59,59,0.95));
background-image: -webkit-linear-gradient(top, rgba(38,38,38,0.95), rgba(59,59,59,0.95));
background-image: -o-linear-gradient(top, rgba(38,38,38,0.95), rgba(59,59,59,0.95));
background-image: -ms-linear-gradient(top, rgba(38,38,38,0.95), rgba(59,59,59,0.95));
background-image: linear-gradient(top, rgba(38,38,38,0.95), rgba(59,59,59,0.95));
border-radius: 6px;
box-shadow: inset 0px 0px 0px 1px rgba(0,0,0,0.5), inset 0px 0px 0px 2px rgba(255,255,255,0.075), inset 0px 2px 1px 0px rgba(255,255,255,0.2), 0px 4px 4px 0px rgba(0,0,0,0.5);
text-shadow: -1px -1px 0 rgba(0,0,0,1);
padding: 1.5em;
line-height: 2.5em;
min-width: 15em;
}
.dropotron-level-0
{
border-top-left-radius: 0;
border-top-right-radius: 0;
margin-top: -2px;
box-shadow: inset 0px 0px 0px 1px rgba(0,0,0,0.5), inset 0px 0px 0px 2px rgba(255,255,255,0.075), 0px 4px 4px 0px rgba(0,0,0,0.5);
}
.dropotron a,
.dropotron span
{
color: #aaa;
text-decoration: none;
text-transform: uppercase;
font-weight: 800;
font-size: 0.8em;
letter-spacing: 0.075em;
outline: 0;
}
.dropotron li:hover > a,
.dropotron li:hover > span
{
color: #fff;
}
这是 Dropotron 的 jQuery 文件
(function(jQuery) {
jQuery.fn.disableSelection_dropotron = function() { return jQuery(this).css('user-select', 'none').css('-khtml-user-select', 'none').css('-moz-user-select', 'none').css('-o-user-select', 'none').css('-webkit-user-select', 'none'); }
jQuery.fn.dropotron = function(options) {
var settings = jQuery.extend({
selectorParent: jQuery(this)
}, options);
return jQuery.dropotron(settings);
}
jQuery.dropotron = function(options) {
// Settings
var settings = jQuery.extend({
selectorParent: null, // The parent jQuery object
baseZIndex: 1000, // Base Z-Index
menuClass: 'dropotron', // Menu class (assigned to every UL)
expandMode: 'hover', // Expansion mode ("hover" or "click")
hoverDelay: 150, // Hover delay (in ms)
hideDelay: 250, // Hide delay (in ms; 0 disables)
openerClass: 'opener', // Opener class
openerActiveClass: 'active', // Active opener class
submenuClassPrefix: 'dropotron-level-', // Submenu class prefix
mode: 'slide', // Menu mode ("instant", "fade", "slide", "zoom")
speed: 'fast', // Menu speed ("fast", "slow", or ms)
easing: 'swing', // Easing mode ("swing", ???)
alignment: 'left', // Alignment ("left", "center", "right")
offsetX: 0, // Submenu offset X
offsetY: 0, // Submenu offset Y
globalOffsetY: 0, // Global offset Y
IEOffsetX: 0, // IE Offset X
IEOffsetY: 0, // IE Offset Y
noOpenerFade: false, // If true, when in "fade" mode the top-level opener will not fade with the menu
detach: true // Detach second level menus (to prevent parent styling from bleeding through)
}, options);
// Variables
var _top = settings.selectorParent, _menus = _top.find('ul');
var _window = jQuery('html');
var isLocked = false, hoverTimeoutId = null, hideTimeoutId = null;
var _isTouch = !!('ontouchstart' in window), _eventType = 'click';
// Main
_top
.bind('doCollapseAll', function() {
_menus
.trigger('doCollapse');
});
_menus.each(function() {
var menu = jQuery(this), opener = menu.parent();
if (settings.hideDelay > 0)
menu.add(opener)
.mouseleave(function(e) {
window.clearTimeout(hideTimeoutId);
hideTimeoutId = window.setTimeout(function() {
menu.trigger('doCollapse');
}, settings.hideDelay);
});
menu
.disableSelection_dropotron()
.hide()
.addClass(settings.menuClass)
.css('position', 'absolute')
.mouseenter(function(e) {
window.clearTimeout(hideTimeoutId);
})
.bind('doExpand', function() {
if (menu.is(':visible'))
return false;
window.clearTimeout(hideTimeoutId);
_menus.each(function() {
var t = jQuery(this);
if (!jQuery.contains(t.get(0), opener.get(0)))
t.trigger('doCollapse');
});
var x, c, left, top, isTL = (menu.css('z-index') == settings.baseZIndex), oo = opener.offset(), op = opener.position(), opp = opener.parent().position(), ow = opener.outerWidth(), mw = menu.outerWidth();
if (isTL)
{
if (!settings.detach)
x = op;
else
x = oo;
top = x.top + opener.outerHeight() + settings.globalOffsetY;
c = settings.alignment;
menu
.removeClass('left')
.removeClass('right')
.removeClass('center');
switch (settings.alignment)
{
case 'right':
left = x.left - mw + ow;
if (left < 0)
{
left = x.left;
c = 'left';
}
break;
case 'center':
left = x.left - Math.floor((mw - ow) / 2);
if (left < 0)
{
left = x.left;
c = 'left';
}
else if (left + mw > _window.width())
{
left = x.left - mw + ow;
c = 'right';
}
break;
case 'left':
default:
left = x.left;
if (left + mw > _window.width())
{
left = x.left - mw + ow;
c = 'right';
}
break;
}
menu.addClass(c);
}
else
{
// Non-static position fix
if (opener.css('position') == 'relative'
|| opener.css('position') == 'absolute')
{
top = settings.offsetY;
left = (-1 * op.left);
}
else
{
top = op.top + settings.offsetY;
left = 0;
}
switch (settings.alignment)
{
case 'right':
left += (-1 * opener.parent().outerWidth()) + settings.offsetX;
break;
case 'center':
case 'left':
default:
left += opener.parent().outerWidth() + settings.offsetX;
break;
}
}
if (navigator.userAgent.match(/MSIE ([0-9]+)\./) && RegExp.$1 < 8)
{
left += settings.IEOffsetX;
top += settings.IEOffsetY;
}
menu
.css('left', left + 'px')
.css('top', top + 'px');
menu.css('opacity', '0.01').show();
// Kludge!
var tmp = false;
// Non-static position fix
if (opener.css('position') == 'relative'
|| opener.css('position') == 'absolute')
left = (-1 * op.left);
else
left = 0;
if (menu.offset().left < 0)
{
left += opener.parent().outerWidth() - settings.offsetX;
tmp = true;
}
else if (menu.offset().left + mw > _window.width())
{
left += (-1 * opener.parent().outerWidth()) - settings.offsetX;
tmp = true;
}
if (tmp)
menu.css('left', left + 'px');
menu.hide().css('opacity', '1');
switch (settings.mode)
{
case 'zoom':
isLocked = true;
opener.addClass(settings.openerActiveClass);
menu.animate({
width: 'toggle',
height: 'toggle'
}, settings.speed, settings.easing, function() {
isLocked = false;
});
break;
case 'slide':
isLocked = true;
opener.addClass(settings.openerActiveClass);
menu.animate({ height: 'toggle' }, settings.speed, settings.easing, function() {
isLocked = false;
});
break;
case 'fade':
isLocked = true;
if (isTL && !settings.noOpenerFade)
{
var tmp;
if (settings.speed == 'slow')
tmp = 80;
else if (settings.speed == 'fast')
tmp = 40;
else
tmp = Math.floor(settings.speed / 2);
opener.fadeTo(tmp, 0.01, function() {
opener.addClass(settings.openerActiveClass);
opener.fadeTo(settings.speed, 1);
menu.fadeIn(settings.speed, function() {
isLocked = false;
});
});
}
else
{
opener.addClass(settings.openerActiveClass);
opener.fadeTo(settings.speed, 1);
menu.fadeIn(settings.speed, function() {
isLocked = false;
});
}
break;
case 'instant':
default:
opener.addClass(settings.openerActiveClass);
menu.show();
break;
}
return false;
})
.bind('doCollapse', function() {
if (!menu.is(':visible'))
return false;
menu.hide();
opener.removeClass(settings.openerActiveClass);
menu.find('.' + settings.openerActiveClass).removeClass(settings.openerActiveClass);
menu.find('ul').hide();
return false;
})
.bind('doToggle', function(e) {
if (menu.is(':visible'))
menu.trigger('doCollapse');
else
menu.trigger('doExpand');
return false;
});
opener
.disableSelection_dropotron()
.addClass('opener')
.css('cursor', 'pointer')
.bind(_eventType, function(e) {
if (isLocked)
return;
e.preventDefault();
e.stopPropagation();
menu.trigger('doToggle');
});
if (settings.expandMode == 'hover')
opener.hover(function(e) {
if (isLocked)
return;
hoverTimeoutId = window.setTimeout(function() {
menu.trigger('doExpand');
}, settings.hoverDelay);
},
function (e) {
window.clearTimeout(hoverTimeoutId);
}
);
});
_menus.find('a')
.css('display', 'block')
.click(function(e) {
if (isLocked)
return;
_top.trigger('doCollapseAll');
e.stopPropagation();
if (jQuery(this).attr('href').length < 1)
e.preventDefault();
});
_top.find('li')
.css('white-space', 'nowrap')
.each(function() {
var t = jQuery(this), a = t.children('a'), ul = t.children('ul');
a.click(function(e) {
if (jQuery(this).attr('href').length < 1)
e.preventDefault();
else
e.stopPropagation();
});
if (a.length > 0 && ul.length == 0)
t.click(function(e) {
if (isLocked)
return;
_top.trigger('doCollapseAll');
e.stopPropagation();
});
});
_top.children('li').each(function() {
var opener = jQuery(this), menu = opener.children('ul');
if (menu.length > 0)
{
if (settings.detach)
menu
.detach()
.appendTo('body');
for(var z = settings.baseZIndex, i = 1, y = menu; y.length > 0; i++)
{
y.css('z-index', z++);
if (settings.submenuClassPrefix)
y.addClass(settings.submenuClassPrefix + (z - 1 - settings.baseZIndex));
y = y.find('> li > ul');
}
}
});
_window
.click(function() {
if (!isLocked)
_top.trigger('doCollapseAll');
})
.keypress(function(e) {
if (!isLocked
&& e.keyCode == 27) {
e.preventDefault();
_top.trigger('doCollapseAll');
}
});
};
})(jQuery);