如何实现展开/收缩的菜单?

http://fason.nease.net/有比较cool的例子,代码右键查看

解决方案 »

  1.   

    <!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN">
    <HTML>
    <HEAD>
    <TITLE> New Document </TITLE>
    <Script Language="JavaScript">
    //Name﹕無限層樹狀
    //Design:LiuZXIT
    //OverTime:2003/3/19
    //Note:在IE5.i上測試通過var strStyle='<style type="text/css">'
    strStyle+='span.SelectIng{color:#ff00ff;border:solid 1pt #666666;padding:0.5pt;height:4px;background-color:#cccccc;}'
    strStyle+='span.NoSelect{color:#000084;border:solid 1pt #ffffff;padding:0.5pt;height:4px;background-color:#ffffff;}'
    strStyle+='span.SelectEd{color:#D02090;border:solid 1pt #888888;padding:0.5pt;height:4px;background-color:#f3f3f3;}'
    strStyle+='</style>'
    document.write(strStyle)var myRs=new Array(), selectItem;
    function compare(a,b) {return parseInt(a[1]) - parseInt(b[1])}
    function InsertItem(s){myRs[myRs.length++] = s.split(/,/);}function ExCloAll(n){
    var d=document.all('0'), e=d.all.tags('div')
    for (i=0;i<e.length;i++)e[i].style.display=(n==1?'block':'none')
    e=d.all.tags('p')
    for (i=0;i<e.length;i++){if(ChkExist(e[i].children[1].value))e[i].children[0].innerText=(n==1?'- ':'+ ')}
    }function ExCloItem(){
    var c,e=event.srcElement, p=e.parentElement.children
    if(e.myHref!=''){
    alert((e.myTarget!=''?e.myTarget:'window')+'.location='+e.myHref) //要改成連接到某頁只需把alert改成eval即可
    //如果你不想觸發展合動作只需在這里加return;
    }
    else{window.status='no href'};
    if(selectItem!=null)selectItem.className='NoSelect';
    e.className='SelectEd'
    selectItem=event.srcElement;
    if(c=document.all(e.value)){
    p[0].innerText=(p[0].innerText=='+ '?'- ':'+ ')
    c.style.display=(c.style.display=='none'?'block':'none')
    }else{p[0].innerText='- '}
    }
    function ExCloItem2(){
    var c,e=event.srcElement, p=e.parentElement.children
    if(c=document.all(p[1].value)){
    e.innerText=(e.innerText=='+ '?'- ':'+ ')
    c.style.display=(c.style.display=='block'?'none':'block')
    }else e.innerText='- '
    }function OutItem(){
    var e=event.srcElement
    if(selectItem != '')e.className=(selectItem==e?'SelectEd':'NoSelect')
    else e.className='NoSelect'
    }function ChkExist(n){
    n=parseInt(n)
    if((n<myRs[0][1])||(n>myRs[myRs.length-1][1]))return false
    var a,b,c,x=0, y=parseInt(myRs.length/2), z=myRs.length-1
    while((x!=y)&&(y!=z)){
    a=myRs[x][1], b=myRs[y][1], c=myRs[z][1]
    if(n==a||n==b||n==c)return true
    if(n>b)x=y;
    else z=y;y=parseInt(x+z);
    y=parseInt((x+z)/2);
    }
    return false
    }function drawTree(n){
    if(n==0){
    myRs.sort(compare)
    document.write('<p style="font:10pt;cursor:hand;"><span onclick="ExCloAll(1)">全部展開</span>&nbsp;&nbsp;<span onclick="ExCloAll(0)">全部合攏</span></p>')
    }
    if (ChkExist(n)!=true)return
    document.write('<div id="'+n+'" style="font:10pt;cursor:hand;'+(n!=0?'position:relative;left:20;display:none;':'')+'">')
    for(var i=0;i<myRs.length;i++){
    if (parseInt(myRs[i][1])>n)break;
    if (myRs[i][1]==n){
    document.write('<p style="margin:0pt;"><span style="vertical-align:top;" onclick="ExCloItem2()">'+(ChkExist(myRs[i][0])?'+ ':'- ')+'</span>')
    document.write('<span onclick="ExCloItem()" myHref="'+(myRs[i].length>3?myRs[i][3]:'')+'" myTarget="' + (myRs[i].length>4?myRs[i][4]:'') +'" value="'+myRs[i][0]+'" class="NoSelect" onmouseout="OutItem()" onmouseover="this.className=\'SelectIng\'">'+myRs[i][2]+'</span></p>')
    if (myRs[i].length >3)document.write('</a>');
    drawTree(myRs[i][0])
    }
    }
    document.write('</div>')
    }InsertItem('1,0,根目錄1')
    InsertItem('11,1,子目錄1')
    InsertItem('111,11,孫目錄1,b.htm,parent.frmMain')
    InsertItem('1111,111,曾孫目錄,c.htm,top')
    InsertItem('11111,1111,玄孫目錄,d.htm,window')
    InsertItem('12,1,子目錄2')
    InsertItem('2,0,根目錄2')
    InsertItem('21,2,子目錄A,d.htm')
    InsertItem('22,2,子目錄B')
    InsertItem('3,0,根目錄3')
    InsertItem('31,3,子目錄C,e.htm')
    InsertItem('311,31,子目錄D,e.htm')
    drawTree(0)
    </Script></HEAD><BODY></BODY>
    </HTML>
      

  2.   

    <script language="JavaScript">
    <!--
    /*树型菜单原理*/
    function Expand(o,n){
    var io=o.open=="false"
    o.innerHTML=io?"-":"+"
    document.getElementById("Child"+n).style.display=io?"":"none"
    o.open=io?"true":"false"
    }
    //-->
    </script>
    <div><a href="" onclick="Expand(this,0);return(false)" open="false">+</a> <span>主菜单</span></div>
    <div id="Child0" style="display:none;padding-left:14">
    <div><span>#</span><span>子菜单</span></div>
    <div><span>#</span><span>子菜单</span></div>
    <div><span>#</span><span>子菜单</span></div>
    </div>
      

  3.   

    e....
    :)
    再来两个<div></div> 吧只有一个看不到 全部展开 和 全部收缩:Pthanks~
      

  4.   

    <script language="JavaScript">
    <!--
    /*树型菜单原理*/
    function Expand(o){
    var io=o.open=="false"
    var n=o.uid
    o.innerHTML=io?"-":"+"
    document.getElementById("Child"+n).style.display=io?"":"none"
    o.open=io?"true":"false"
    }
    function ExpandAll(flag){
    var fld=document.getElementsByName("folder")
    for(i=0;i<fld.length;i++){
    fld[i].open=flag?"false":"true"
    Expand(fld[i])
    }
    }
    //-->
    </script>
    <a href="javascript:ExpandAll(true)">全部展开</a>
    <a href="javascript:ExpandAll(false)">全部合拢</a>
    <div><a href="" name="folder" uid=0 onclick="Expand(this);return(false)" open="false">+</a> <span>主菜单</span></div>
    <div id="Child0" style="display:none;padding-left:14">
    <div><span>#</span><span>子菜单</span></div>
    <div><span>#</span><span>子菜单</span></div>
    <div><span>#</span><span>子菜单</span></div>
    </div>
    <div><a href="" name="folder" uid=1 onclick="Expand(this);return(false)" open="false">+</a> <span>主菜单</span></div>
    <div id="Child1" style="display:none;padding-left:14">
    <div><span>#</span><span>子菜单</span></div>
    <div><span>#</span><span>子菜单</span></div>
    <div><span>#</span><span>子菜单</span></div>
    </div>