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求导航下拉菜单代码
悬赏分：15 | 提问时间：2009-6-11 20:13 | 提问者：tyzh11808
一两列就行，适合初学者，javascrtpt简单些的，或纯CSS的
推荐答案
<html xmlns="http://www.w3.org/1999/xhtml" lang="zh-CN">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=gb2312" />
<title>下拉菜单演示</title>
<style type="text/css">
<!--
*{margin:0px; padding:0px;}
body {font-family: arial, 宋体, serif;font-size:12px;}
#nav {line-height: 24px; list-style-type: none; background:#666; }
#nav a {display: block; width: 80px; text-align:center;}
#nav a:link {color:#666; text-decoration:none;}
#nav a:visited {color:#666;text-decoration:none;}
#nav a:hover {color:#FFF;text-decoration:none;font-weight:bold;}
#nav li {float: left; width: 80px; background:#CCC;}
#nav li a:hover{background:#999;}
#nav li ul {line-height: 27px; list-style-type: none;text-align:left;left: -999em; width: 180px; position: absolute;}
#nav li ul li{float: left;background: #F6F6F6;}
#nav li ul a{display: block; width: 156px;text-align:left;padding-left:24px;}
#nav li ul a:link {color:#666; text-decoration:none;}
#nav li ul a:visited {color:#666;text-decoration:none;}
#nav li ul a:hover {color:#F3F3F3;text-decoration:none;font-weight:normal;background:#C00;}
#nav li:hover ul {left: auto;}
#nav li.sfhover ul {left: auto;}
#content {clear: left;}
-->
</style>
<script type=text/javascript><!--//--><![CDATA[//><!--
function menuFix() {
var sfEls = document.getElementById("nav").getElementsByTagName("li");
for (var i=0; i<sfEls.length; i++) {
sfEls[i].onmouseover=function() {
this.className+=(this.className.length>0? " ": "") + "sfhover";
}
sfEls[i].onMouseDown=function() {
this.className+=(this.className.length>0? " ": "") + "sfhover";
}
sfEls[i].onMouseUp=function() {
this.className+=(this.className.length>0? " ": "") + "sfhover";
}
sfEls[i].onmouseout=function() {
this.className=this.className.replace(new RegExp("( ?|^)sfhover\\b"),
"");
}
}
}
window.onload=menuFix;
//--><!]]></script>
</head>
<body>
<ul id="nav">
<li><a href="http://www.52css.com">产品介绍一</a>
<ul>
<li><a href="http://www.52css.com">产品一</a></li>
<li><a href="http://www.52css.com">产品一</a></li>
<li><a href="http://www.52css.com">产品一</a></li>
<li><a href="http://www.52css.com">产品一</a></li>
<li><a href="http://www.52css.com">产品一</a></li>
<li><a href="http://www.52css.com">产品一</a></li>
</ul>
</li>
<li><a href="http://www.52css.com">产品介绍二</a>
<ul>
<li><a href="http://www.52css.com">产品二</a></li>
<li><a href="http://www.52css.com">产品二</a></li>
<li><a href="http://www.52css.com">产品二</a></li>
<li><a href="http://www.52css.com">产品二</a></li>
<li><a href="http://www.52css.com">产品二</a></li>
</ul>
</li>
</ul>
</body>
</html>
悬赏分：15 | 提问时间：2009-6-11 20:13 | 提问者：tyzh11808
一两列就行，适合初学者，javascrtpt简单些的，或纯CSS的
推荐答案
<html xmlns="http://www.w3.org/1999/xhtml" lang="zh-CN">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=gb2312" />
<title>下拉菜单演示</title>
<style type="text/css">
<!--
*{margin:0px; padding:0px;}
body {font-family: arial, 宋体, serif;font-size:12px;}
#nav {line-height: 24px; list-style-type: none; background:#666; }
#nav a {display: block; width: 80px; text-align:center;}
#nav a:link {color:#666; text-decoration:none;}
#nav a:visited {color:#666;text-decoration:none;}
#nav a:hover {color:#FFF;text-decoration:none;font-weight:bold;}
#nav li {float: left; width: 80px; background:#CCC;}
#nav li a:hover{background:#999;}
#nav li ul {line-height: 27px; list-style-type: none;text-align:left;left: -999em; width: 180px; position: absolute;}
#nav li ul li{float: left;background: #F6F6F6;}
#nav li ul a{display: block; width: 156px;text-align:left;padding-left:24px;}
#nav li ul a:link {color:#666; text-decoration:none;}
#nav li ul a:visited {color:#666;text-decoration:none;}
#nav li ul a:hover {color:#F3F3F3;text-decoration:none;font-weight:normal;background:#C00;}
#nav li:hover ul {left: auto;}
#nav li.sfhover ul {left: auto;}
#content {clear: left;}
-->
</style>
<script type=text/javascript><!--//--><![CDATA[//><!--
function menuFix() {
var sfEls = document.getElementById("nav").getElementsByTagName("li");
for (var i=0; i<sfEls.length; i++) {
sfEls[i].onmouseover=function() {
this.className+=(this.className.length>0? " ": "") + "sfhover";
}
sfEls[i].onMouseDown=function() {
this.className+=(this.className.length>0? " ": "") + "sfhover";
}
sfEls[i].onMouseUp=function() {
this.className+=(this.className.length>0? " ": "") + "sfhover";
}
sfEls[i].onmouseout=function() {
this.className=this.className.replace(new RegExp("( ?|^)sfhover\\b"),
"");
}
}
}
window.onload=menuFix;
//--><!]]></script>
</head>
<body>
<ul id="nav">
<li><a href="http://www.52css.com">产品介绍一</a>
<ul>
<li><a href="http://www.52css.com">产品一</a></li>
<li><a href="http://www.52css.com">产品一</a></li>
<li><a href="http://www.52css.com">产品一</a></li>
<li><a href="http://www.52css.com">产品一</a></li>
<li><a href="http://www.52css.com">产品一</a></li>
<li><a href="http://www.52css.com">产品一</a></li>
</ul>
</li>
<li><a href="http://www.52css.com">产品介绍二</a>
<ul>
<li><a href="http://www.52css.com">产品二</a></li>
<li><a href="http://www.52css.com">产品二</a></li>
<li><a href="http://www.52css.com">产品二</a></li>
<li><a href="http://www.52css.com">产品二</a></li>
<li><a href="http://www.52css.com">产品二</a></li>
</ul>
</li>
</ul>
</body>
</html>
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脚本说明:
把如下代码加入<body>区域中
<SCRIPT LANGUAGE="JavaScript">
<!-- Begin
var arrItems1 = new Array();
var arrItemsGrp1 = new Array();
arrItems1[3] = "Truck";
arrItemsGrp1[3] = 1;
arrItems1[4] = "Train";
arrItemsGrp1[4] = 1;
arrItems1[5] = "Car";
arrItemsGrp1[5] = 1;
arrItems1[6] = "Boat";
arrItemsGrp1[6] = 2;
arrItems1[7] = "Submarine";
arrItemsGrp1[7] = 2;
arrItems1[0] = "Planes";
arrItemsGrp1[0] = 3;
arrItems1[1] = "Ultralight";
arrItemsGrp1[1] = 3;
arrItems1[2] = "Glider";
arrItemsGrp1[2] = 3;
var arrItems2 = new Array();
var arrItemsGrp2 = new Array();
arrItems2[21] = "747";
arrItemsGrp2[21] = 0
arrItems2[22] = "Cessna";
arrItemsGrp2[22] = 0
arrItems2[31] = "Kolb Flyer";
arrItemsGrp2[31] = 1
arrItems2[34] = "Kitfox";
arrItemsGrp2[34] = 1
arrItems2[35] = "Schwietzer Glider";
arrItemsGrp2[35] = 2
arrItems2[99] = "Chevy Malibu";
arrItemsGrp2[99] = 5
arrItems2[100] = "Lincoln LS";
arrItemsGrp2[100] = 5
arrItems2[57] = "BMW Z3";
arrItemsGrp2[57] = 5
arrItems2[101] = "F-150";
arrItemsGrp2[101] = 3
arrItems2[102] = "Tahoe";
arrItemsGrp2[102] = 3
arrItems2[103] = "Freight Train";
arrItemsGrp2[103] = 4
arrItems2[104] = "Passenger Train";
arrItemsGrp2[104] = 4
arrItems2[105] = "Oil Tanker";
arrItemsGrp2[105] = 6
arrItems2[106] = "Fishing Boat";
arrItemsGrp2[106] = 6
arrItems2[200] = "Los Angelas Class";
arrItemsGrp2[200] = 7
arrItems2[201] = "Kilo Class";
arrItemsGrp2[201] = 7
arrItems2[203] = "Seawolf Class";
arrItemsGrp2[203] = 7
function selectChange(control, controlToPopulate, ItemArray, GroupArray)
{
var myEle ;
var x ;
// Empty the second drop down box of any choices
for (var q=controlToPopulate.options.length;q>=0;q--) controlToPopulate.options[q]=null;
if (control.name == "firstChoice") {
// Empty the third drop down box of any choices
for (var q=myChoices.thirdChoice.options.length;q>=0;q--) myChoices.thirdChoice.options[q] = null;
}
// ADD Default Choice - in case there are no values
myEle = document.createElement("option") ;
myEle.value = 0 ;
myEle.text = "[SELECT]" ;
controlToPopulate.add(myEle) ;
// Now loop through the array of individual items
// Any containing the same child id are added to
// the second dropdown box
for ( x = 0 ; x < ItemArray.length ; x++ )
{
if ( GroupArray[x] == control.value )
{
myEle = document.createElement("option") ;
myEle.value = x ;
myEle.text = ItemArray[x] ;
controlToPopulate.add(myEle) ;
}
}
}
// End -->
</script>
<form name=myChoices>
<table align="center">
<tr>
<td>
<SELECT id=firstChoice name=firstChoice onchange="selectChange(this, myChoices.secondChoice, arrItems1, arrItemsGrp1);">
<option value=0 SELECTED>[SELECT]</option>
<option value=1>Land</option>
<option value=2>Sea</option>
<option value=3>Air</option>
</SELECT>
</TD><TD>
<SELECT id=secondChoice name=secondChoice onchange="selectChange(this, myChoices.thirdChoice, arrItems2, arrItemsGrp2);">
</SELECT>
<SELECT id=thirdChoice name=thirdChoice>
</SELECT>
</TD>
</TR>
</TABLE>
</form>
<a href="">欢迎访问</a>
把如下代码加入<body>区域中
<SCRIPT LANGUAGE="JavaScript">
<!-- Begin
var arrItems1 = new Array();
var arrItemsGrp1 = new Array();
arrItems1[3] = "Truck";
arrItemsGrp1[3] = 1;
arrItems1[4] = "Train";
arrItemsGrp1[4] = 1;
arrItems1[5] = "Car";
arrItemsGrp1[5] = 1;
arrItems1[6] = "Boat";
arrItemsGrp1[6] = 2;
arrItems1[7] = "Submarine";
arrItemsGrp1[7] = 2;
arrItems1[0] = "Planes";
arrItemsGrp1[0] = 3;
arrItems1[1] = "Ultralight";
arrItemsGrp1[1] = 3;
arrItems1[2] = "Glider";
arrItemsGrp1[2] = 3;
var arrItems2 = new Array();
var arrItemsGrp2 = new Array();
arrItems2[21] = "747";
arrItemsGrp2[21] = 0
arrItems2[22] = "Cessna";
arrItemsGrp2[22] = 0
arrItems2[31] = "Kolb Flyer";
arrItemsGrp2[31] = 1
arrItems2[34] = "Kitfox";
arrItemsGrp2[34] = 1
arrItems2[35] = "Schwietzer Glider";
arrItemsGrp2[35] = 2
arrItems2[99] = "Chevy Malibu";
arrItemsGrp2[99] = 5
arrItems2[100] = "Lincoln LS";
arrItemsGrp2[100] = 5
arrItems2[57] = "BMW Z3";
arrItemsGrp2[57] = 5
arrItems2[101] = "F-150";
arrItemsGrp2[101] = 3
arrItems2[102] = "Tahoe";
arrItemsGrp2[102] = 3
arrItems2[103] = "Freight Train";
arrItemsGrp2[103] = 4
arrItems2[104] = "Passenger Train";
arrItemsGrp2[104] = 4
arrItems2[105] = "Oil Tanker";
arrItemsGrp2[105] = 6
arrItems2[106] = "Fishing Boat";
arrItemsGrp2[106] = 6
arrItems2[200] = "Los Angelas Class";
arrItemsGrp2[200] = 7
arrItems2[201] = "Kilo Class";
arrItemsGrp2[201] = 7
arrItems2[203] = "Seawolf Class";
arrItemsGrp2[203] = 7
function selectChange(control, controlToPopulate, ItemArray, GroupArray)
{
var myEle ;
var x ;
// Empty the second drop down box of any choices
for (var q=controlToPopulate.options.length;q>=0;q--) controlToPopulate.options[q]=null;
if (control.name == "firstChoice") {
// Empty the third drop down box of any choices
for (var q=myChoices.thirdChoice.options.length;q>=0;q--) myChoices.thirdChoice.options[q] = null;
}
// ADD Default Choice - in case there are no values
myEle = document.createElement("option") ;
myEle.value = 0 ;
myEle.text = "[SELECT]" ;
controlToPopulate.add(myEle) ;
// Now loop through the array of individual items
// Any containing the same child id are added to
// the second dropdown box
for ( x = 0 ; x < ItemArray.length ; x++ )
{
if ( GroupArray[x] == control.value )
{
myEle = document.createElement("option") ;
myEle.value = x ;
myEle.text = ItemArray[x] ;
controlToPopulate.add(myEle) ;
}
}
}
// End -->
</script>
<form name=myChoices>
<table align="center">
<tr>
<td>
<SELECT id=firstChoice name=firstChoice onchange="selectChange(this, myChoices.secondChoice, arrItems1, arrItemsGrp1);">
<option value=0 SELECTED>[SELECT]</option>
<option value=1>Land</option>
<option value=2>Sea</option>
<option value=3>Air</option>
</SELECT>
</TD><TD>
<SELECT id=secondChoice name=secondChoice onchange="selectChange(this, myChoices.thirdChoice, arrItems2, arrItemsGrp2);">
</SELECT>
<SELECT id=thirdChoice name=thirdChoice>
</SELECT>
</TD>
</TR>
</TABLE>
</form>
<a href="">欢迎访问</a>
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<div >
<div class="title" onclick="divhideshow(contentdiv)" >菜单</div>
<div id="contentdiv">内容</div>
</div>
<script>
//使用JS函数来显示和隐藏DIV比较简单
function divhideshow(d) {
if(d.style.display == 'none') {
d.style.display = 'block';
} else {
d.style.display = 'none';
}
}
</script>
<div class="title" onclick="divhideshow(contentdiv)" >菜单</div>
<div id="contentdiv">内容</div>
</div>
<script>
//使用JS函数来显示和隐藏DIV比较简单
function divhideshow(d) {
if(d.style.display == 'none') {
d.style.display = 'block';
} else {
d.style.display = 'none';
}
}
</script>
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这里有一个js的多级联动下拉菜单
可以自定义位置和样式 比较实用
里面有教程和源码
可以自定义位置和样式 比较实用
里面有教程和源码
参考资料： http://www.blueidea.com/common/shoutbox/redir.asp?4=e&id=11931
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使用JS函数来显示和隐藏DIV比较简单
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