现在我有一个为左侧辅助导航构建的手风琴风格菜单。
这是HTML的片段：
<ul>
<li class='navigation'><a href="javascript:animatedcollapse.toggle('1')" >Computer</a>
<div id='1' style='display:none;'>
<ul class='sub'>
<li class='sub-menu'><a href='#'>Free Diagnostic</a></li>
<li class='sub-menu'><a href='#'>Computer Tune Up</a></li>
<li class='sub-menu'><a href='#'>Virus and Spyware Removal</a></li>
<li class='sub-menu'><a href='#'>E-mail Support</a></li>
<li class='sub-menu'><a href='#'>Green PC</a></li>
<li class='sub-menu'><a href='#'>Software Install</a></li>
<li class='sub-menu'><a href='#'>Simple Repair</a></li>
<li class='sub-menu'><a href='#'>Advanced Repair</a></li>
<li class='sub-menu'><a href='computer.php' style='font-weight:bold;' >See All...</a> </li>
</ul>
</div>
</li>
这是所有的js：
var animatedcollapse={
divholders: {}, //structure: {div.id, div.attrs, div.$divref, div.$togglerimage}
divgroups: {}, //structure: {groupname.count, groupname.lastactivedivid}
lastactiveingroup: {}, //structure: {lastactivediv.id}
preloadimages: [],
show:function(divids){ //public method
if (typeof divids=="object"){
for (var i=0; i<divids.length; i++)
this.showhide(divids[i], "show")
}
else
this.showhide(divids, "show")
},
hide:function(divids){ //public method
if (typeof divids=="object"){
for (var i=0; i<divids.length; i++)
this.showhide(divids[i], "hide")
}
else
this.showhide(divids, "hide")
},
toggle:function(divid){ //public method
if (typeof divid=="object")
divid=divid[0]
this.showhide(divid, "toggle")
},
addDiv:function(divid, attrstring){ //public function
this.divholders[divid]=({id: divid, $divref: null, attrs: attrstring})
this.divholders[divid].getAttr=function(name){ //assign getAttr() function to each divholder object
var attr=new RegExp(name+"=([^,]+)", "i") //get name/value config pair (ie: width=400px,)
return (attr.test(this.attrs) && parseInt(RegExp.$1)!=0)? RegExp.$1 : null //return value portion (string), or 0 (false) if none found
}
this.currentid=divid //keep track of current div object being manipulated (in the event of chaining)
return this
},
showhide:function(divid, action){
var $divref=this.divholders[divid].$divref //reference collapsible DIV
if (this.divholders[divid] && $divref.length==1){ //if DIV exists
var targetgroup=this.divgroups[$divref.attr('groupname')] //find out which group DIV belongs to (if any)
if ($divref.attr('groupname') && targetgroup.count>1 && (action=="show" || action=="toggle" && $divref.css('display')=='none')){ //If current DIV belongs to a group
if (targetgroup.lastactivedivid && targetgroup.lastactivedivid!=divid) //if last active DIV is set
this.slideengine(targetgroup.lastactivedivid, 'hide') //hide last active DIV within group first
this.slideengine(divid, 'show')
targetgroup.lastactivedivid=divid //remember last active DIV
}
else{
this.slideengine(divid, action)
}
}
},
slideengine:function(divid, action){
var $divref=this.divholders[divid].$divref
var $togglerimage=this.divholders[divid].$togglerimage
if (this.divholders[divid] && $divref.length==1){ //if this DIV exists
var animateSetting={height: action}
if ($divref.attr('fade'))
animateSetting.opacity=action
$divref.animate(animateSetting, $divref.attr('speed')? parseInt($divref.attr('speed')) : 500, function(){
if ($togglerimage){
$togglerimage.attr('src', ($divref.css('display')=="none")? $togglerimage.data('srcs').closed : $togglerimage.data('srcs').open)
}
if (animatedcollapse.ontoggle){
try{
animatedcollapse.ontoggle(jQuery, $divref.get(0), $divref.css('display'))
}
catch(e){
alert("An error exists inside your \"ontoggle\" function:\n\n"+e+"\n\nAborting execution of function.")
}
}
})
return false
}
},
generatemap:function(){
var map={}
for (var i=0; i<arguments.length; i++){
if (arguments[i][1]!=null){ //do not generate name/value pair if value is null
map[arguments[i][0]]=arguments[i][1]
}
}
return map
},
init:function(){
var ac=this
jQuery(document).ready(function($){
animatedcollapse.ontoggle=animatedcollapse.ontoggle || null
var urlparamopenids=animatedcollapse.urlparamselect() //Get div ids that should be expanded based on the url (['div1','div2',etc])
var persistopenids=ac.getCookie('acopendivids') //Get list of div ids that should be expanded due to persistence ('div1,div2,etc')
var groupswithpersist=ac.getCookie('acgroupswithpersist') //Get list of group names that have 1 or more divs with "persist" attribute defined
if (persistopenids!=null) //if cookie isn't null (is null if first time page loads, and cookie hasnt been set yet)
persistopenids=(persistopenids=='nada')? [] : persistopenids.split(',') //if no divs are persisted, set to empty array, else, array of div ids
groupswithpersist=(groupswithpersist==null || groupswithpersist=='nada')? [] : groupswithpersist.split(',') //Get list of groups with divs that are persisted
jQuery.each(ac.divholders, function(){ //loop through each collapsible DIV object
this.$divref=$('#'+this.id)
if ((this.getAttr('persist') || jQuery.inArray(this.getAttr('group'), groupswithpersist)!=-1) && persistopenids!=null){ //if this div carries a user "persist" setting, or belong to a group with at least one div that does
var cssdisplay=(jQuery.inArray(this.id, persistopenids)!=-1)? 'block' : 'none'
}
else{
var cssdisplay=this.getAttr('hide')? 'none' : null
}
if (urlparamopenids[0]=="all" || jQuery.inArray(this.id, urlparamopenids)!=-1){ //if url parameter string contains the single array element "all", or this div's ID
cssdisplay='block' //set div to "block", overriding any other setting
}
else if (urlparamopenids[0]=="none"){
cssdisplay='none' //set div to "none", overriding any other setting
}
this.$divref.css(ac.generatemap(['height', this.getAttr('height')], ['display', cssdisplay]))
this.$divref.attr(ac.generatemap(['groupname', this.getAttr('group')], ['fade', this.getAttr('fade')], ['speed', this.getAttr('speed')]))
if (this.getAttr('group')){ //if this DIV has the "group" attr defined
var targetgroup=ac.divgroups[this.getAttr('group')] || (ac.divgroups[this.getAttr('group')]={}) //Get settings for this group, or if it no settings exist yet, create blank object to store them in
targetgroup.count=(targetgroup.count||0)+1 //count # of DIVs within this group
if (jQuery.inArray(this.id, urlparamopenids)!=-1){ //if url parameter string contains this div's ID
targetgroup.lastactivedivid=this.id //remember this DIV as the last "active" DIV (this DIV will be expanded). Overrides other settings
targetgroup.overridepersist=1 //Indicate to override persisted div that would have been expanded
}
if (!targetgroup.lastactivedivid && this.$divref.css('display')!='none' || cssdisplay=="block" && typeof targetgroup.overridepersist=="undefined") //if this DIV was open by default or should be open due to persistence
targetgroup.lastactivedivid=this.id //remember this DIV as the last "active" DIV (this DIV will be expanded)
this.$divref.css({display:'none'}) //hide any DIV that's part of said group for now
}
}) //end divholders.each
jQuery.each(ac.divgroups, function(){ //loop through each group
if (this.lastactivedivid && urlparamopenids[0]!="none") //show last "active" DIV within each group (one that should be expanded), unless url param="none"
ac.divholders[this.lastactivedivid].$divref.show()
})
if (animatedcollapse.ontoggle){
jQuery.each(ac.divholders, function(){ //loop through each collapsible DIV object and fire ontoggle event
animatedcollapse.ontoggle(jQuery, this.$divref.get(0), this.$divref.css('display'))
})
}
//Parse page for links containing rel attribute
var $allcontrols=$('a[rel]').filter('[rel^="collapse["], [rel^="expand["], [rel^="toggle["]') //get all elements on page with rel="collapse[]", "expand[]" and "toggle[]"
$allcontrols.each(function(){ //loop though each control link
this._divids=this.getAttribute('rel').replace(/(^\w+)|(\s+)/g, "").replace(/[\[\]']/g, "") //cache value 'div1,div2,etc' within identifier[div1,div2,etc]
if (this.getElementsByTagName('img').length==1 && ac.divholders[this._divids]){ //if control is an image link that toggles a single DIV (must be one to one to update status image)
animatedcollapse.preloadimage(this.getAttribute('data-openimage'), this.getAttribute('data-closedimage')) //preload control images (if defined)
$togglerimage=$(this).find('img').eq(0).data('srcs', {open:this.getAttribute('data-openimage'), closed:this.getAttribute('data-closedimage')}) //remember open and closed images' paths
ac.divholders[this._divids].$togglerimage=$(this).find('img').eq(0) //save reference to toggler image (to be updated inside slideengine()
ac.divholders[this._divids].$togglerimage.attr('src', (ac.divholders[this._divids].$divref.css('display')=="none")? $togglerimage.data('srcs').closed : $togglerimage.data('srcs').open)
}
$(this).click(function(){ //assign click behavior to each control link
var relattr=this.getAttribute('rel')
var divids=(this._divids=="")? [] : this._divids.split(',') //convert 'div1,div2,etc' to array
if (divids.length>0){
animatedcollapse[/expand/i.test(relattr)? 'show' : /collapse/i.test(relattr)? 'hide' : 'toggle'](divids) //call corresponding public function
return false
}
}) //end control.click
})// end control.each
$(window).bind('unload', function(){
ac.uninit()
})
}) //end doc.ready()
},
uninit:function(){
var opendivids='', groupswithpersist=''
jQuery.each(this.divholders, function(){
if (this.$divref.css('display')!='none'){
opendivids+=this.id+',' //store ids of DIVs that are expanded when page unloads: 'div1,div2,etc'
}
if (this.getAttr('group') && this.getAttr('persist'))
groupswithpersist+=this.getAttr('group')+',' //store groups with which at least one DIV has persistance enabled: 'group1,group2,etc'
})
opendivids=(opendivids=='')? 'nada' : opendivids.replace(/,$/, '')
groupswithpersist=(groupswithpersist=='')? 'nada' : groupswithpersist.replace(/,$/, '')
this.setCookie('acopendivids', opendivids)
this.setCookie('acgroupswithpersist', groupswithpersist)
},
getCookie:function(Name){
var re=new RegExp(Name+"=[^;]*", "i"); //construct RE to search for target name/value pair
if (document.cookie.match(re)) //if cookie found
return document.cookie.match(re)[0].split("=")[1] //return its value
return null
},
setCookie:function(name, value, days){
if (typeof days!="undefined"){ //if set persistent cookie
var expireDate = new Date()
expireDate.setDate(expireDate.getDate()+days)
document.cookie = name+"="+value+"; path=/; expires="+expireDate.toGMTString()
}
else //else if this is a session only cookie
document.cookie = name+"="+value+"; path=/"
},
urlparamselect:function(){
window.location.search.match(/expanddiv=([\w\-_,]+)/i) //search for expanddiv=divid or divid1,divid2,etc
return (RegExp.$1!="")? RegExp.$1.split(",") : []
},
preloadimage:function(){
var preloadimages=this.preloadimages
for (var i=0; i<arguments.length; i++){
if (arguments[i] && arguments[i].length>0){
preloadimages[preloadimages.length]=new Image()
preloadimages[preloadimages.length-1].src=arguments[i]
}
}
}
}
这是我的CSS：
}#navigation{
width: 290px;
height: 347px;
text-transform: uppercase;
margin: 0 auto;
}
#navigation ul{
margin: 0;
list-style-type: none;
padding-left:4px;
margin-top: -1px;
}
#navigation ul li{
position: relative;
width: 282px;
}
.navigation a:link, .navigation a:active, .navigation a:visited{
display: block;
height: 6px;
color: #000;
text-decoration: none;
background-image: url('images/buttonfade.jpg');
background-repeat: repeat-x;
text-align: center;
padding-top: 8px;
padding-bottom: 25px;
font-size: 1em;
font-weight: bold;
border: 1px outset #efefef;
}
.navigation a:hover{
color: #000;
background-image: url('images/buttonfade.jpg');
background-repeat: repeat-x;
text-decoration: none;
border: 1px inset #efefef;
}
.sub{
margin: 0 !important;
padding: 0 !important;
}
.sub-menu a:link, .sub-menu a:active, .sub-menu a:visited{
display: block;
width: 260px;
height: 100%;
padding: 10px;
color: #000;
background-image: none;
background-color: #fff;
text-decoration: none;
text-align: left;
font-size: .78em;
margin: 0;
border: none;
font-weight: normal;
border: 1px solid #efefef;
}
.sub-menu a:hover{
color: #000;
background-color: #efefef;
background-image: none;
text-decoration: underline;
border: 1px solid #efefef;
}
.sub-menu a:hover{
color: #000;
background-color: #efefef;
background-image: none;
text-decoration: underline;
border: 1px solid #efefef;
}
如果打开选项卡以显示子菜单，我想找出一种方法使悬停状态保持活动状态。这样，它使得他们开放的类别更加突出。这是我使用的教程中的代码，所以我不理解95％的JavaScript。
如果有人可以告诉我如何使用JavaScript在我的导航中的每个标签的末尾添加一个向下的三角形/箭头，并且有一个子菜单也是非常有用的，因为不是所有的按钮都可以，我希望人们知道该标签下有更多内容。
提前感谢您的帮助！
答案 0 :(得分：0)
jQuery的：
$(document).ready(function(){
$(".navigation").click(function(){
alert('I have been clicked');
$(this).toggleClass('active');
});
});
CSS：
.active {
color: #000;
background-image: url('images/buttonfade.jpg');
background-repeat: repeat-x;
text-decoration: none;
border: 1px inset #efefef;
}