json取出来的值是undefined，求大神来见见

json取出来的值是undefined，求大神来看看。

JScript code

        var jsonData;    $.ajax({              type: "Get",               url: "/jsn.html",              dataType: "text",               global: false,               async: false,                success: function (strReult) {                 jsonData=eval("("+strReult+")");               },              error: function () {                 alert("Ajax请求数据失败!");              }     });                      for(var i=0;i<jsonData.city.data.length;i++){                 alert(jsonData.city.data.name);                       } 

JScript code

{"city":{        "data":[                  {"a":116.420605,"b":40.080577,"name":"碧水宾馆",address:"天通北苑一区甲6"},                  {"a":116.42048,"b":40.056286,"name":"悦嘉酒店",address:"北京市朝阳区汤立路218号明天生活馆B座"},                  {"a":116.668862,"b":40.120904,"name":"北京顺则兴商店",address:"北京市顺义区xx"}                  ]        }        }

JScript code

//alert(jsonData.city.data.name);//少了索引了  alert(jsonData.city.data[i].name);