js中上拉菜单有关问题了
日期：2014-05-16 浏览次数：20349 次
js中下拉菜单问题求助了
由于刚学js,不少例子中语句看不明白，向各位请教了。js代码中注有？？？？？号的地方
由于刚学js,不少例子中语句看不明白，向各位请教了。js代码中注有？？？？？号的地方
- HTML code
<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<title>JavaScript Sample</title>
<style type="text/css">
<!--
#mainNav {
position: absolute;
top:2px;
height:30px;
width:800px;
}
.mainItem {
position: absolute;
top:3px;
height:27px;
width:74px;
padding:10px 0px;
margin:0px;
text-align:center;
font-size:13px;
background-image: url(images/tab1.gif);
background-repeat:repeat-x;
}
.subItemNav {
position: absolute;
top: 30px;
left: 0px;
width: 100%;
height: 20px;
padding: 2px 0px 0px 100px;
visibility: hidden;
background-color:#61B38B;
}
.subItemNav a:link, .subItemNav a:visited {
font-size: 80%;
color: #ffffff;
}
.subItemNav a:hover {
color: #cccccc;
}
</style>
</head>
<body onmousemove="closeAllSubItem(event);">
<div id="headerNav">
<div id="mainNav">
<div id="mainItem1" class="mainItem"
onmouseover="displaySubItem(this);">开发王</div>
<div id="mainItem2" class="mainItem"
onmouseover="displaySubItem(this);">最佳拍档</div>
<div id="mainItem3" class="mainItem"
onmouseover="displaySubItem(this);">Flash</div>
<div id="mainItem4" class="mainItem"
onmouseover="displaySubItem(this);">简体中文</div>
<div id="mainItem5" class="mainItem"
onmouseover="displaySubItem(this);">繁体中文</div>
<div id="mainItem6" class="mainItem"
onmouseover="displaySubItem(this);">其它语言</div>
</div>
<div id="subMenu1" class="subItemNav">
<a href="#">HTML</a> |
<a href="#">CSS</a> |
<a href="#">JavaScript</a> |
<a href="#">ASP</a> |
<a href="#">ASP.NET(VB)</a> |
<a href="#">ASP.NET(C#)</a> |
<a href="#">JSP</a> |
<a href="#">PHP</a>
</div>
<div id="subMenu2" class="subItemNav">
<a href="#">HTML/CSS/JavaScript</a> |
<a href="#">ASP</a> |
<a href="#">ASP.NET(VB)</a> |
<a href="#">ASP.NET(C#)</a> |
<a href="#">JSP</a> |
<a href="#">PHP</a>
</div>
<div id="subMenu3" class="subItemNav">
<a href="#">动画王</a> |
<a href="#">开发王</a> |
<a href="#">FMS</a> |
<a href="#">Flash Player：The Missing Manual</a> |
<a href="#">ASP.NET for Flash</a> |
<a href="#">ASP for Flash</a> |
<a href="#">JSP for Flash</a> |
<a href="#">PHP for Flash</a>
</div>
<div id="subMenu4" class="subItemNav">
<a href="#">some link</a> |
<a href="#">some link</a>
</div>
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