javascript - 延迟关闭专门用 div 制作的 css 菜单上的子菜单

Question

我已经用 DIV 制作了这个水平菜单，(根本没有使用 ul 和 li 列表)，我正在寻找一种方法来延迟子菜单在鼠标移出时折叠，如果它是使用 javascript、jquery 或CSS。 我尝试了一些 javascript 解决方案，但都没有用。

CSS

.topmenu
{
margin: 0 auto; width: auto;float:left; 
position:relative;
z-index:4;
height: 50px;
font-family: Arial, Helvetica, sans-serif;
font-size:16px;
color:#444;
}

.topmenu a
{
padding:0 16px;
line-height:50px; /*Note: keep this value the same as the height of .topmenu */
font-size:16px;
font-weight:normal;
display:block;
outline:0;
text-decoration: none;
position:relative;
color:#444;
}

 .topmenu .home, .topmenu .button1, .topmenu .button2 {float: left;}
 .topmenu .home img {vertical-align: top; margin-top:8px; border:none;}
 .topmenu .home:hover a, .topmenu .button1:hover a, .topmenu .button2:hover a
  {background-color:#333; color:#FFF; z-index:9;}



 .topmenu .subhome,
 .topmenu .submenu1,
 .topmenu .submenu2
 {
position: absolute;
right:0;
z-index:20;
display:none;
background-color:#0e5079;           
text-align: left;
padding: 20px;  
top:50px;
color:#999;
border-radius:3px;
-moz-box-shadow:1px 2px 12px #333333;
-webkit-box-shadow:1px 2px 12px #333333;
box-shadow:1px 2px 12px #333333;
text-shadow:
-1px -1px 0 #333,0px -1px 0 #333,1px -1px 0 #333,-1px 1px 0 #333,0px 1px 0 #333,1px 1px 0 #333;
 }
.topmenu .home:hover .subhome {display:block;}
.topmenu .button1:hover .submenu1 {display:block;}
.topmenu .button2:hover .submenu2 {display:block;}

.topmenu .subhome {
width:960px;
height:560px;
background-image:url(menu/menu-bg/corfu-bw-bg.jpg);
background-repeat:no-repeat;
background-position:center;     
  }
.topmenu .submenu1 {
background-image:url(menu/menu-bg/benitses-bg.jpg);
background-repeat:no-repeat;
background-position:center;     
}
.topmenu .submenu2 {
background-image:url(menu/menu-bg/corfu-bg.jpg);
background-repeat:no-repeat;
background-position:center;     
}
.topmenu .submenuleft {padding:20px;float:left;}
.topmenu .submenuleft span {font-weight:bold; font-size:16px;color:#DDD;line-  height:32px;}
.topmenu .submenuleft a span {font-weight:bold; font-size:16px;color:#FA0;padding-   top:5px;padding-bottom:8px;}
.topmenu .submenuleft a span:hover {color:#FF0; text-decoration:none;}
.topmenu .submenuleft a:hover {color:#FF0;font-size:14px;text-decoration:none;background:none;}
.topmenu .submenuleft img {display:block;border:#FFF 2px solid;padding:4px;margin-top:5px;}

.topmenu .subhome .submenuleft a,
.topmenu .submenu1 .submenuleft a,
.topmenu .submenu2 .submenuleft a
{
padding:0px;
line-height:26px;
font-size:14px;
background:none;
display: inline;
text-align:left;    
z-index: 0;
} 

和 HTML

     <div class="topmenu">
<div class="home"><a href="#">HOME</a>
     <div class="subhome">
     </div> 
</div>
<div class="button1"><a href="#">ITEM1</a>
    <div class="submenu1" style="width:840px;">
        <div class="submenuleft">
                <a href="#"><span>LINK TITLE</span></a><br> 
                <a href="#">Example link</a><br>
                <a href="#">Example link</a><br>
                <a href="#">Example link</a><br>
                <a href="#">Example link</a>
        </div>
        <div class="submenuleft">
                <a href="#"><span>LINK TITLE</span></a><br> 
                <a href="#">Example link</a><br>
                <a href="#">Example link</a>
        </div>
        <div class="submenuleft">
                <a href="#"><span>LINK TITLE</span></a><br> 
                <a href="#">Example link</a><br>
                <a href="#">Example link</a><br>
                <a href="#">Example link</a><br>
                <a href="#">Example link</a><br>
                <a href="#">Example link</a>
        </div>
        <div class="submenuleft" style="text-align:right;width:130px;">
            <img src="menu/benitses-m.jpg" alt="" style="width:128px; height:200px; height:190px;margin-top:5px;">
        </div>            
    </div>
</div>

<div class="button2"><a href="#">ITEM2</a>
     <div class="submenu2" style="width:800px;">
       <div class="submenuleft">
                 <a href="#"><span>LINK TITLE</span></a><br> 
                 <a href="#">Example link</a><br>
                 <a href="#">Example link</a><br>   
                 <a href="#">Example link</a>                  
        </div>
        <div class="submenuleft">
                 <a href="#"><span>LINK TITLE</span></a><br>                  
                 <a href="#"><span>LINK TITLE</span></a><br> 
                 <a href="#">Example link</a><br>
                 <a href="#">Example link</a>                  
        </div>
        <div class="submenuleft">
                  <a href="#">Example link</a><br>
                  <a href="#">Example link</a><br>
                  <a href="#">Example link</a>                   
        </div>
        <div class="submenuleft" style="text-align:right; width:140px;">
            <img src="menu/mouse-island.jpg" alt="" style="width:140px; height:210px;">
        </div>
     </div>
</div>

您可以在 [此处][1] 查看此菜单的测试示例

谢谢

[1]:

Answer 1

您可以使用 CSS Transitions。只需使用 visibility 属性来显示和隐藏菜单(而不是在 block 和 none 之间切换 display)，指定它的过渡只会延迟从 visible 到 hidden 的变化，而不是相反。

显然，您还可以创建淡入淡出效果，为 opacity 属性设置动画。

实例:http://jsfiddle.net/KVtV7/

示例代码:

<ul id="menu">
    <li>
        <a href="">Text</a>
        <ul>
            <li><a href="">A</a></li>
            <li><a href="">B</a></li>
            <li><a href="">C</a></li>
            <li><a href="">D</a></li>
            <li><a href="">E</a></li>
        </ul>
    </li>
</ul>

CSS:

#menu ul{
    visibility: hidden;
    position: absolute;
    padding: 0;
    -moz-transition-property: visibility;
    -moz-transition-duration: 2s;
    -webkit-transition-property: visibility;
    -webkit-transition-duration: 2s;
    transition-property: visibility;
    transition-duration: 2s;
}

#menu li:hover > ul{
    visibility: visible;
}