水平下拉菜單

Question

您好我想創建一個HTML結構是這樣的：

<ul class="menu"> 
    <li class="top"><a></a></li> 
    <li><a class="button1"></a></li> 
    <li class="extend"> 
     <a class="button 1"></a> 
     <ul> 
      <li class="last"><a class="button2"></a></li> 
     </ul> 
    </li> 
    <li class="extend"> 
     <a class="button1"></a> 
     <ul> 
      <li><a class="button2"></a></li> 
      <li><a class="button3"></a></li> 
      <li class="last"><a class="button4"></a></li> 
     </ul> 
    </li> 
    <li><a class="button1"></a></li> 
    <li class="last"><a class="button2"></a></li> 
</ul> 

與此代碼：

$(document).ready(function(){ 
    var menuArray = [ 
    { 
     'name':'main 1', 
     'className':'main_1' 
    },{ 
     'name':'main 2', 
     'group':'group1' 
    },{ 
     'name':'main 3', 
     'group':'group1', 
    },{ 
     'name':'main 4', 
     'group':'group2' 
    },{ 
     'name':'main5', 
     'group':'group2' 
    },{ 
     'name':'button' 
    } 
]; 

    var createMenu = function(toolArray){ 
     var menu = $('<ul class="menu"><li class="top"><a></a></li></ul>').appendTo('body'); 
     var groupArray = []; 

     $.each(toolArray, function(index, value){ 
      var group = value.group || ''; 
      var name = value.name || ''; 
      var elementClass = value.className || ''; 

      if(typeof(value.group) === 'undefined'){ 
       console.log('crete button - no group'); 

       var li = $('<li><a class="'+name+'">'+name+'</a></li>'); 
       li.click(value.onClick); 
       menu.append(li); 
      } 
      else{ 
       if(typeof(groupArray[group]) === 'undefined'){//first element in group 
        console.log('create first element in group '+group); 
        groupArray[group] = 1; 

        var li = $('<li class="'+group+'"><a class="'+elementClass+'">'+name+'</a></li>'); 
        menu.append(li); 
       } 
       else{ 
        if(groupArray[group] > 1){//third, ... element in group 
         var li = $('<li><a class="'+elementClass+'">'+name+'</a></li>'); 
         $('li.'+group+' ul', menu).append(li); 
        } 
        else{//second element in group 
         var li_parent = $('li.'+group, menu).addClass('extend'); 
         var ul = $('<ul><li class="'+group+'"><a class="'+elementClass+'">'+name+'</a></li></ul>'); 
         $(ul).append(li_parent); 
        } 

        groupArray[value.group] = groupArray[value.group]+1; 
       } 
      } 
     }); 
    }; 

    createMenu(menuArray); 
    });​ 

的問題是，該代碼只能說明這一點：

<ul class="menu"> 
    <li class="top"><a></a></li> 
    <li><a class="main 1">main 1</a></li> 
    <li><a class="button">button</a></li> 
</ul> 

任何想法爲什麼？ http://jsfiddle.net/W4Phv/

Answer 1

看起來你已經在這行交換的變量：

$(ul).append(li_parent); 

應該

$(li_parent).append(ul);