本文實例講述了js模擬淘寶網的多級選擇菜單實現方法。分享給大家供大家參考。具體如下：
這是一款基于js模擬淘寶網的多級選擇菜單代碼，這款菜單是模擬淘寶網的，是很早時候的淘寶網，現在已經沒有了，本款菜單可以像級聯菜單那樣一級一級的選擇數據，最后確定出數據。
運行效果截圖如下：
在線演示地址如下：
http://demo.VeVB.COm/js/2015/js-ftaobao-select-menu-codes/
具體代碼如下：
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN""http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"><html xmlns="http://www.w3.org/1999/xhtml"><head><title>模擬淘寶網菜單選擇</title><meta http-equiv="Content-Type" content="text/html; charset=gb2312" /><style type="text/css" media="all">body *{ font-size:14px; margin:0; padding:0;}#CategorySelector{ clear:both; width:778px; height:220px; background-color:#FFF; margin-bottom:8px;}#CategorySelector ul{ margin:0 3px 0 0; padding:0; border:1px solid #CCC; float:left; width:189px; height:218px; overflow:auto;}#CategorySelector ul.Blank{ background-color:#F6F6F6;}#CategorySelector li{ list-style-type:none; width:auto; height:20px; margin:0 1px !important; margin /**/:0 1px 0 -15px; padding:0; border:1px solid #FFF; line-height:20px; color:#444; text-indent:3px; cursor:default;}#CategorySelector li.Selected{ background-color:#CAFFC0; border:1px solid #0A9800; color:#006623;}#CategorySelector li.IsParent{ background-image:url(//files.VeVB.COm/file_images/article/201508/201581893903737.gif); background-position:99% 50%; background-repeat:no-repeat;}#CategorySelector li.RecentUsed{ color:#170;}#CategoryTitle{ clear:both; width:778px; background-color:#FFF;}#CategoryTitle ul{ float:left;}#CategoryTitle li{ margin:0 3px 0 0; float:left; border:1px solid #CCC; width:189px; color:#0063C8; font-weight:bold; border-bottom:0px; height:23px; line-height:23px;}</style></head><body><div id="CategoryTitle"> <ul id="TitleContent"> <li> 選擇寶貝類別</li> <li> 選擇游戲</li> <li> 選擇游戲區域</li> <li> 選擇服務器</li> </ul></div><div id="CategorySelector"> <ul id="Category_ItemType" class="Blank"> </ul> <ul id="Category_GameType" class="Blank"> </ul> <ul id="Category_GameArea" class="Blank"> </ul> <ul id="Category_GameServer" class="Blank"> </ul></div><script language="javascript" type="text/javascript" id="commonjs">Array.prototype.S = String.fromCharCode(2);Array.prototype.in_array = function(e){ var re = new RegExp(this.S+e+this.S); return re.test(this.S+this.join(this.S)+this.S);}function DataContent(){ this.Parent; // Parent Tags this.ParentID; this.Children; // Children Tags this.ChildrenID;}function DataServer(){ this.mList = new Array(); this.ListCount = function(){return this.mList.length;} this.GetListObj = function(n) { if (n<this.ListCount()) return this.mList[n]; return null; } this.Add = function(sParent,sParentID,sChildren,sChildrenID) { obj = new DataContent(); obj.Parent = sParent; obj.ParentID = sParentID; obj.Children = sChildren; obj.ChildrenID = sChildrenID; this.mList[this.ListCount()] = obj; }}function getTriggerNode(e) { return (document.all)?event.srcElement:e.target;}function getObject(objID){ return document.getElementById(objID);}function CreateList(objName,objData,objSelected){ var listBox = getObject(objName[0]); if(!listBox) return; var strOutput = ""; var liClass = ""; var id = 0; var op_txt = new Array(); var op_val = new Array(); var sub_val = new Array(); if (objSelected[0]) { for(i=0;i<objData.ListCount();i++) if(objData.GetListObj(i).ParentID==objSelected[0]) { id = i; break; } if(i==objData.ListCount()){ listBox.innerHTML=""; listBox.className="Blank"; return false; } } if(objName[1]) for(i=0;i<objName[1].ListCount();sub_val.push(objName[1].GetListObj(i++).ParentID)); tmpobj = objData.GetListObj(id); if (tmpobj.Children.length==0) { for(i=0;i<objData.ListCount();op_txt.push(objData.GetListObj(i).Parent),op_val.push(objData.GetListObj(i++).ParentID)); } else { op_txt = tmpobj.Children; op_val = tmpobj.ChildrenID; } for(i=0;i<op_txt.length;i++) { if(sub_val.in_array(op_val[i])) liClass = "IsParent"; if(op_val[i] == objSelected[1]){ liClass += " Selected"; } strOutput += '<li id="'+objName[0]+'__'+op_val[i]+'" class="'+liClass+'">'+op_txt[i]+'</li>'; liClass = ''; } listBox.innerHTML = strOutput; strOutput = ""; listBox.className="";}function changeCategoryStyle(ulID,liCurr){ if(lastSelectItem[ulID]){ lastSelectItem[ulID].className=lastSelectItem[ulID].className.replace("Selected","").replace(//s+$/,""); } liCurr.className += " Selected"; lastSelectItem[ulID] = liCurr;}function changeCategory(evnt){ var obj = getTriggerNode(evnt); var obj2 = obj; if(obj2.nodeName=="DIV") return (0); if(obj.nodeName != "LI") obj = obj.parentNode; while(obj2.nodeName != "UL") obj2 = obj2.parentNode; if(obj.nodeName != "LI") return; changeCategoryStyle(obj2.id,obj); var parentID = (obj.id).split("__")[1]; switch(obj2.id) { case itemtype: break; case gametype: CreateList([gamearea,gameserverData],gameareaData,[parentID,0]); break; case gamearea: CreateList([gameserver,],gameserverData,[parentID,0]); break; }}var cselect = "CategorySelector";var itemtype = "Category_ItemType";var gametype = "Category_GameType";var gamearea = "Category_GameArea";var gameserver = "Category_GameServer";var lastSelectItem = {itemtype:new Object(),gametype:new Object(),gamearea:new Object(),gameserver:new Object()};var itemtypeData = new DataServer();itemtypeData.Add("武器",1,[],[]);itemtypeData.Add("防具",2,[],[]);var gametypeData = new DataServer();gametypeData.Add("魔力寶貝",1,[],[]);gametypeData.Add("仙境傳說",2,[],[]);var gameareaData = new DataServer();gameareaData.Add("魔力寶貝",1,["天歇","牧羊"],[1,2]);gameareaData.Add("仙境傳說",2,["上海","北京"],[3,4]);var gameserverData = new DataServer();gameserverData.Add("天歇",1,["平頂","山頂"],[1,2]);gameserverData.Add("牧羊",2,["平頂2","山頂2"],[3,4]);//gameserverData.Add("上海",3,["sfdsadfas","sdf"],[5,6]);gameserverData.Add("北京",4,["asdf","asdff"],[7,8]);CreateList([itemtype,],itemtypeData,[0,0]);CreateList([gametype,gameareaData],gametypeData,[0,0]);getObject(cselect).onclick = changeCategory;</script></body></html>希望本文所述對大家的javascript程序設計有所幫助。
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