javascrip 树型菜单
来源:互联网 发布:简单算法题 编辑:程序博客网 时间:2024/06/02 18:33
刚从网上学到这招,对比而言这种方法最简单,当然也有很多不足之处~!不过先记下,日后慢慢研究~!
先将如下代码下在head里面:
- <style>
- <!--
- #foldheader{cursor:hand ; font-weight:bold ;
- list-style-image:url(fold.gif)}
- #foldinglist{list-style-image:url(list.gif)}
- //-->
- </style>
- <script language="JavaScript1.2">
- <!--
- var head="display:''"
- function change(){
- if(!document.all)
- return
- if (event.srcElement.id=="foldheader") {
- var srcIndex = event.srcElement.sourceIndex
- var nested = document.all[srcIndex+1]
- if (nested.style.display=="none") {
- nested.style.display=''
- event.srcElement.style.listStyleImage="url(open.gif)"
- }
- else {
- nested.style.display="none"
- event.srcElement.style.listStyleImage="url(fold.gif)"
- }
- }
- }
- document.onclick=change
- //-->
- </script>
再将如下代码放在body 里:根据不同的页面需求做一些简单修改就搞定了,TMD,太简单了,爽~!
- <ul>
- <li id="foldheader">News</li>
- <ul id="foldinglist" style="display:none">
- <li><a href="#">CNN</a></li>
- <li><a href="#">ABC News</a></li>
- <li><a href="#">Vancouver Sun</a></li>
- </ul>
- <li id="foldheader">Games</li>
- <ul id="foldinglist" style="display:none">
- <li><a href="#">GameSpot</a></li>
- <li><a href="#">Happy Puppy</a></li>
- <li><a href="#">Game Center</a></li>
- </ul>
- <li id="foldheader">Software</li>
- <ul id="foldinglist" style="display:none">
- <li><a href="#">outer 1</a></li>
- <li><a href="#">outer 2</a></li>
- <li id="foldheader">Nested</li>
- <ul id="foldinglist" style="display:none">
- <li><a href="#">nested 1</a></li>
- <li><a href="#">nested 2</a></li>
- </ul>
- <li><a href="#">outer 3</a></li>
- <li><a href="#">outer 4</a></li>
- </ul>
- </ul>
- <script language="JavaScript1.2">
- <!--
- /**
- * Get cookie routine by Shelley Powers
- * (shelley.powers@ne-dev.com)
- */
- function get_cookie(Name) {
- var search = Name + "="
- var returnvalue = "";
- if (document.cookie.length > 0) {
- offset = document.cookie.indexOf(search)
- // if cookie exists
- if (offset != -1) {
- offset += search.length
- // set index of beginning of value
- end = document.cookie.indexOf(";", offset);
- // set index of end of cookie value
- if (end == -1) end = document.cookie.length;
- returnvalue=unescape(document.cookie.substring(offset, end))
- }
- }
- return returnvalue;
- }
- if (get_cookie(window.location.pathname) != ''){
- var openresults=get_cookie(window.location.pathname).split(" ")
- for (i=0 ; i < openresults.length ; i++){
- foldinglist[openresults[i]].style.display=''
- document.all[foldinglist[openresults[i]].sourceIndex -
- 1].style.listStyleImage="url(open.gif)"
- }
- }
- if (document.all){
- var nodelength=foldinglist.length-1
- var nodes=new Array(nodelength)
- var openones=''
- }
- function check(){
- for (i=0 ; i <= nodelength ; i++){
- if (foldinglist[i].style.display=='')
- openones=openones + " " + i
- }
- document.cookie=window.location.pathname+"="+openones
- }
- if (document.all)
- document.body.onunload=check
- //-->
- </script>
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