最近刚好要做个有联动的分类选择，就写了下面这个东西，令人郁闷的javascript

cat = {
data : function (code,name,price,discount){
    this.code = code;
    this.name = name;
    this.price = price;
    this.discount = discount;
},
get : function(code){
    if (!code || code.length % 3 != 0 || code.length < 3)
    {
      return false;
    }
    if(cat.getlevel(code.length / 3)[code]){
      return cat.getlevel(code.length / 3)[code];
    } else {
      return false;
    }
},

add : function (code,name,price,discount){
    if(!cat["lv_" + code.length / 3 ]){
      cat["lv_" + code.length / 3 ]     = new Object();
      cat["lv_" + code.length / 3 ].len = 0;
    }
    cat["lv_" + code.length / 3 ][code] = new cat.data(code,name,price,discount );
    cat["lv_" + code.length / 3 ].len++;
},

getlevel : function (level){
    if(cat["lv_" + level]){
      return cat["lv_" + level]
    } else {
      return false;
    }
},

getsub : function( code ){
    code = new String(code);
    datas = new Object();
    level = code.length / 3 + 1;
    sub   = cat.getlevel(level);
    count = 0;
    for(var item in sub){
      if(sub[item].code){
        if(sub[item].code.substr(0,code.length) == code ){
          datas[sub[item].code] = sub[item];
          count++;
        }
      }
    }
    datas.len = count;
    if(count == 0){return false;}
    return datas;
}
}

附部份测试数据

cat.add(‘001′,’魔兽世界’);
cat.add(‘001001′,’一区’);
cat.add(‘001001001′,’伊瑟拉’);
cat.add(‘001001001001′,’联盟’,’0.2617′,’1.00′);
cat.add(‘001001001002′,’部落’,’0.6229′,’1.00′);
cat.add(‘001001002′,’卡德罗斯’);
cat.add(‘001001002001′,’联盟’,’0.3297′,’1.00′);
cat.add(‘001001002002′,’部落’,’0.7794′,’1.00′);
cat.add(‘001001003′,’卡扎克’);
cat.add(‘001001003001′,’联盟’,’0.9082′,’1.00′);
cat.add(‘001001003002′,’部落’,’0.2026′,’1.00′);
cat.add(‘001001004′,’回音山’);
cat.add(‘001001004001′,’联盟’,’0.2884′,’1.00′);
cat.add(‘001001004002′,’部落’,’0.8341′,’1.00′);
cat.add(‘001001005′,’国王之谷’);

还是感觉好麻烦 做联动的时候还是很郁闷啊····没有什么好办法

我太笨了