Jquery+json绑定带层次下拉框（select控件）

                <select id="pid" runat="server">
                    <option value="0" data="|0|">不选父级类</option>
                </select>

　　　　　　　var html = [‘<option value="0">不选父级模块</option>‘];
            var data = eval(json.msg);
            var levelStr;
            for (var key in data) {
                var str = data[key].itemvalue;
                var _p = str.split("|")[2];
                var _c = data[key].pId;
                if (_p == _c) {
                    if (_p != "") {
                        levelStr = "┗━┻━";
                    }
                    else {
                        levelStr = "┗━";
                    }
                    html.push(‘<option value="‘ + data[key].id + ‘">‘ + levelStr + data[key].name + ‘</option>‘);
                }
                $("select[name=‘pid‘]").empty().append(html.join(‘‘));
            }

"[
{"id":31,"pId":0,"name":"新闻中心","itemvalue":"|0|"},
{"id":51,"pId":31,"name":"企业快讯","itemvalue":"|0|31|"},
{"id":52,"pId":31,"name":"企业公告","itemvalue":"|0|31|"},
{"id":53,"pId":31,"name":"行业动态","itemvalue":"|0|31|" },
{"id":91,"pId":31,"name":"新闻中心","itemvalue":"|0|31|"},
{"id":93,"pId":31,"name":"企业快讯","itemvalue":"|0|31|"},
{"id":94,"pId":31,"name":"企业公告","itemvalue":"|0|31|"}，

{"id":54,"pId":0,"name":"关于盟友捌捌","itemvalue":"|0|"},
{"id":55,"pId":54,"name":"企业概况","itemvalue":"|0|54|"},
{"id":56,"pId":54,"name":"企业文化","itemvalue":"|0|54|"},
{"id":57,"pId":54,"name":"企业发展","itemvalue":"|0|54|"}
]"