Cara Simple Membuat "Tree Menu" pada Blogger

Banyak cara membuat menu dalam blogger, salah satunya adalah membuat Tree Menu yang sangat menarik untuk dilihat dan diterapkan dalam blogger kita. Selama Kang Fathur bisa Berbagi Untuk Semua kenapa tidak?

Untuk itulah, dalam kesempatan yang berbahagia ini, saya akan membagikan cara tentang membuat Tree Menu yang simple seperti blog archives (arip blog) pada widget default blogger. Kalau menurut saya cara sangatlah gamapang untuk diikuti asalkan anda tidak ngantuk untuk mempelajarinya.

Contohnya bisa dilihat di gambar disamping ini, jika anda tertarik dan ingin menerapkan diblog anda silakan ikuti langkah-langkahnya, caranya seperti ini :

• Login Blogger;
• Pilih Design atau Rancangan;
• Tambahkan Gadget;
• Pilih HTML/JavaScript;
• Copy paste kode berikut,

<style>
.treeview ul{
margin: 0px;
padding: 0;
}
.treeview li{
background: white url(https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEi6E7Gj9AmUA5wNs2mYEo_DJS7oZpsjx26pfNfdczfuLYOj7bQCWwA_4CMxjOYDIv9ZX10A4vnSOjczagqynPk3hDBvS8mXauUmgBCDaW2Zx22gXQEL9uwglOQYt7AlYzqkKUXDeaorztQ/s400/list.gif) no-repeat 0px 3px;
list-style-type: none;
padding-left: 32px;
margin-bottom: 3px;
}
.treeview li.submenu{
background: white url(https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEhZP4twDCh64Ps6Zf520MuRyWemi8zk1YaFP58GINxG5UZ7MrDIrVmPylEk6wB3g-q8o2sS3f3gu-GHMnVv6RAY5FALyJ-CVORVgDvL3B95yGLkNoXm95Fi5rarh0EfBckm4iKliNyzTYw/s400/closed.gif) no-repeat 0px 3px;
cursor: hand !important;
cursor: pointer !important;
}
.treeview li.submenu ul{
display: none;
}
.treeview .submenu ul li{
cursor: default;
}
</style>
<script type="text/javascript" >
var persisteduls=new Object()
var ddtreemenu=new Object()
ddtreemenu.closefolder="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEhZP4twDCh64Ps6Zf520MuRyWemi8zk1YaFP58GINxG5UZ7MrDIrVmPylEk6wB3g-q8o2sS3f3gu-GHMnVv6RAY5FALyJ-CVORVgDvL3B95yGLkNoXm95Fi5rarh0EfBckm4iKliNyzTYw/s400/closed.gif" //set image path to "closed" folder image
ddtreemenu.openfolder="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEhjNzTwJ-TlCdPZ2VeW8R7LZv5WkriS4FzKLZVVZebjxFpZxwJ3q1plk2Kj0XFpF_UlIuFSYGqeX41XLrONAa7TIlXOH8z2oLUYSqnnGYo_cCKeoDyPFdJTXLewY6xdaet8wcR725thu18/s400/open.gif" //set image path to "open" folder image
//////////No need to edit beyond here///////////////////////////
ddtreemenu.createTree=function(treeid, enablepersist, persistdays){
var ultags=document.getElementById(treeid).getElementsByTagName("ul")
if (typeof persisteduls[treeid]=="undefined")
persisteduls[treeid]=(enablepersist==true && ddtreemenu.getCookie(treeid)!="")? ddtreemenu.getCookie(treeid).split(",") : ""
for (var i=0; i<ultags.length; i++)
ddtreemenu.buildSubTree(treeid, ultags[i], i)
if (enablepersist==true){ //if enable persist feature
var durationdays=(typeof persistdays=="undefined")? 1 : parseInt(persistdays)
ddtreemenu.dotask(window, function(){ddtreemenu.rememberstate(treeid, durationdays)}, "unload") //save opened UL indexes on body unload
}
}
ddtreemenu.buildSubTree=function(treeid, ulelement, index){
ulelement.parentNode.className="submenu"
if (typeof persisteduls[treeid]=="object"){ //if cookie exists (persisteduls[treeid] is an array versus "" string)
if (ddtreemenu.searcharray(persisteduls[treeid], index)){
ulelement.setAttribute("rel", "open")
ulelement.style.display="block"
ulelement.parentNode.style.backgroundImage="url("+ddtreemenu.openfolder+")"
}
else
ulelement.setAttribute("rel", "closed")
} //end cookie persist code
else if (ulelement.getAttribute("rel")==null || ulelement.getAttribute("rel")==false) //if no cookie and UL has NO rel attribute explicted added by user
ulelement.setAttribute("rel", "closed")
else if (ulelement.getAttribute("rel")=="open") //else if no cookie and this UL has an explicit rel value of "open"
ddtreemenu.expandSubTree(treeid, ulelement) //expand this UL plus all parent ULs (so the most inner UL is revealed!)
ulelement.parentNode.onclick=function(e){
var submenu=this.getElementsByTagName("ul")[0]
if (submenu.getAttribute("rel")=="closed"){
submenu.style.display="block"
submenu.setAttribute("rel", "open")
ulelement.parentNode.style.backgroundImage="url("+ddtreemenu.openfolder+")"
}
else if (submenu.getAttribute("rel")=="open"){
submenu.style.display="none"
submenu.setAttribute("rel", "closed")
ulelement.parentNode.style.backgroundImage="url("+ddtreemenu.closefolder+")"
}
ddtreemenu.preventpropagate(e)
}
ulelement.onclick=function(e){
ddtreemenu.preventpropagate(e)
}
}
ddtreemenu.expandSubTree=function(treeid, ulelement){ //expand a UL element and any of its parent ULs
var rootnode=document.getElementById(treeid)
var currentnode=ulelement
currentnode.style.display="block"
currentnode.parentNode.style.backgroundImage="url("+ddtreemenu.openfolder+")"
while (currentnode!=rootnode){
if (currentnode.tagName=="UL"){ //if parent node is a UL, expand it too
currentnode.style.display="block"
currentnode.setAttribute("rel", "open") //indicate it's open
currentnode.parentNode.style.backgroundImage="url("+ddtreemenu.openfolder+")"
}
currentnode=currentnode.parentNode
}
}
ddtreemenu.flatten=function(treeid, action){ //expand or contract all UL elements
var ultags=document.getElementById(treeid).getElementsByTagName("ul")
for (var i=0; i<ultags.length; i++){
ultags[i].style.display=(action=="expand")? "block" : "none"
var relvalue=(action=="expand")? "open" : "closed"
ultags[i].setAttribute("rel", relvalue)
ultags[i].parentNode.style.backgroundImage=(action=="expand")? "url("+ddtreemenu.openfolder+")" : "url("+ddtreemenu.closefolder+")"
}
}

ddtreemenu.rememberstate=function(treeid, durationdays){ //store index of opened ULs relative to other ULs in Tree into cookie
var ultags=document.getElementById(treeid).getElementsByTagName("ul")
var openuls=new Array()
for (var i=0; i<ultags.length; i++){
if (ultags[i].getAttribute("rel")=="open")
openuls[openuls.length]=i //save the index of the opened UL (relative to the entire list of ULs) as an array element
}
if (openuls.length==0) //if there are no opened ULs to save/persist
openuls[0]="none open" //set array value to string to simply indicate all ULs should persist with state being closed
ddtreemenu.setCookie(treeid, openuls.join(","), durationdays) //populate cookie with value treeid=1,2,3 etc (where 1,2... are the indexes of the opened ULs)
}
////A few utility functions below//////////////////////
ddtreemenu.getCookie=function(Name){ //get cookie value
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 ""
}
ddtreemenu.setCookie=function(name, value, days){ //set cookei value
var expireDate = new Date()
//set "expstring" to either future or past date, to set or delete cookie, respectively
var expstring=expireDate.setDate(expireDate.getDate()+parseInt(days))
document.cookie = name+"="+value+"; expires="+expireDate.toGMTString()+"; path=/";
}
ddtreemenu.searcharray=function(thearray, value){ //searches an array for the entered value. If found, delete value from array
var isfound=false
for (var i=0; i<thearray.length; i++){
if (thearray[i]==value){
isfound=true
thearray.shift() //delete this element from array for efficiency sake
break
}
}
return isfound
}
ddtreemenu.preventpropagate=function(e){ //prevent action from bubbling upwards
if (typeof e!="undefined")
e.stopPropagation()
else
event.cancelBubble=true
}
ddtreemenu.dotask=function(target, functionref, tasktype){ //assign a function to execute to an event handler (ie: onunload)
var tasktype=(window.addEventListener)? tasktype : "on"+tasktype
if (target.addEventListener)
target.addEventListener(tasktype, functionref, false)
else if (target.attachEvent)
target.attachEvent(tasktype, functionref)
}
</script>
<a href="javascript:ddtreemenu.flatten('treemenu1', 'expand')">Expand +</a> | <a href="javascript:ddtreemenu.flatten('treemenu1', 'contact')">- Contract</a>
<p></p>
<ul id="treemenu1" class="treeview">
<li><a href="#">Item 1</a></li>
<li><a href="#">Item 2</a></li>

<li>Folder 1
<ul>
<li><a href="#">Sub Item 1.1</a></li>
<li><a href="#">Sub Item 1.2</a></li>
</ul>
</li>
<li><a href="#">Item 3</a></li>

<li>Folder 2
<ul>
<li><a href="#">Sub Item 2.1</a></li>
<li>Folder 2.1
<ul>
<li><a href="#">Sub Item 2.1.1</a></li>
<li><a href="#">Sub Item 2.1.2</a></li>
</ul>
</li>
</ul>
</li>
<li><a href="#">Item 4</a></li>
</ul>
<script type="text/javascript">
//ddtreemenu.createTree(treeid, enablepersist, opt_persist_in_days (default is 1))
ddtreemenu.createTree("treemenu1", true)
ddtreemenu.createTree("treemenu2", false)
</script>

• Lalu Simpan.

Catatan yang perlu dirubah adalah:

1. Ganti # dengan URL tujuan anda;
2. Item 1, Item 2, Item 3 ganti sesuai dengan nama menu yang diinginkan;
3. Jika ingin menambahkan sub menu, pasanglah sebelum kode </ul>

Bagaimana menarik bukan.....
Selamat mencoba dan berkreasi sesuka hati.

Source : Kang Fathur