下拉框里的选项弄成有缩进的形式怎样做？

j就是像这种表现形式

该问题已经现场解决，该贴结贴。

解决方案，代码如下：

1. 
   
2. /**doclib函数库
   
3. *下拉框树形显示
   
4. */
   
5. function createLayeredCategory(opts, id, level) {
   
6.         var sql = "SELECT a.id,a.item_class_id,a.item_class_name,a.domainid,COUNT(*) cnt FROM tlk_商品分类 a left join tlk_商品分类 b ";
   
7.         sql +="on a.item_class_id=b.item_class_level where a.item_class_level='" + id + "' GROUP BY a.id,a.item_class_id,a.item_class_name,a.domainid ORDER BY cnt";
   
8.         var datas = queryBySQL(sql);
   
9.         var rec = null;
   
10.         var str = "|";
    
11.         var id = "";
    
12.         for (var it = datas.iterator(); it.hasNext();) {
    
13.                 rec = it.next();
    
14.                 str = "";
    
15.                 if (level > 1 && level < 3) str = str + "&" + "n" + "b" + "s" + "p" + ";" + "&" + "n" + "b" + "s" + "p" + ";" + "&" + "n" + "b" + "s" + "p" + ";" + "&" + "n" + "b" + "s" + "p" + ";" + "|--";
    
16.                 else if (level > 2) {
    
17.                         str = "";
    
18.                         for (var count = 0; count < level - 1; count++) {
    
19.                                 str = str + "&" + "n" + "b" + "s" + "p" + ";" + "&" + "n" + "b" + "s" + "p" + ";" + "&" + "n" + "b" + "s" + "p" + ";" + "&" + "n" + "b" + "s" + "p" + ";" + "|";
    
20.                         }
    
21.                         str += "--";
    
22.                 } else str = "|--";
    
23.                 str += rec.getItemValueAsString("class_name");
    
24.                 id = rec.getItemValueAsString("class_id");
    
25.                 opts.add(str, id);
    
26.                 createLayeredCategory(opts, id, level + 1);
    
27.         }
    
28. };
    
29. 
    
30. 
    
31. 
    
32. #include "doclib";
    
33. (function() {
    
34.         var opts = $TOOLS.createOptions();
    
35.         var dql = "$formname='商品分类' and class_level is null or class_level=''";
    
36.         var docs = queryByDQL(dql);
    
37.         opts.add("无", "");
    
38.         for (var iter = docs.iterator(); iter.hasNext();) {
    
39.                 var doc = iter.next();
    
40.                 var id = doc.getItemValueAsString("class_id");
    
41.                 var name = doc.getItemValueAsString("class_name");
    
42.                 opts.add(name, id);
    
43.                 createGoodsCategory(opts,id,1);
    
44.         }
    
45.         return opts;
    
46. })();
    

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