json数据：

[
    {
        "AttributeSetsID": "29",
        "AttributeSetsValues": "主体",
        "children": [
            {
                "AttributeID": "25",
                "AttributeValues": "尺寸"
            },
            {
                "AttributeID": "26",
                "AttributeValues": "重量"
            }
        ]
    },
    {
        "AttributeSetsID": "30",
        "AttributeSetsValues": "网络a",
        "children": [
            {
                "AttributeID": "27",
                "AttributeValues": "长度"
            },
            {
                "AttributeID": "28",
                "AttributeValues": "宽度"
            },
            {
                "AttributeID": "29",
                "AttributeValues": "高度"
            }
        ]
    },
    {
        "AttributeSetsID": "32",
        "AttributeSetsValues": "基本参数",
        "children": [
            {
                "AttributeID": "30",
                "AttributeValues": "面积"
            }
        ]
    }
]

   $.post("../Handler/AddGoods.ashx?type=GetGoodsAttributes&category=" + $("#category").val(), {}, function (data) {
                        
                         
                                $.each(data, function (i, item) {

                                    alert(item.AttributeSetsValues);
                                    $.each(item.children, function (i, item1) {

                                        alert(item1.AttributeValues);

                                    })
                                })
                        }, ‘json‘)

json