javascript - Accessing elements in a Hash Table -

i'm going in circles , confused how access elements in hash table. have returned data json successfully. object object contains 2 columns fips , corresponding value. want access first row. i've tried using raw.fips / raw[fips] , raw[0] returned undefined there data in raw don't know access it.

here ajax if helps

$.ajax({     type: "get",     url: webroot + "ws/gis.asmx/censusdata",     data: d,     contenttype: "application/json; charset=utf-8",     datatype: "json",     success: function (data) {         fipsdata = data.d;                                                     console.log("json object returned data : " + fipsdata);         init(regtype, varid);                     } //ends success function });  //ends ajax call 

the ajax returns data , in log there 3141 rows / elements i'm not sure.

var raw = fipsdata; var valmin = infinity; var valmax = -infinity;          (var index in raw) {     fipscode = raw[fips];     console.log(fipscode); }  //log data console.log("fipsdata : " + fipsdata);               console.log("raw number :" + raw);//undefined   

you're using wrong index in code:

for (var index in raw) {     fipscode = raw[fips];     console.log(fipscode); } 

you've set index variable using loop, using fips when try access it. try changing fipscode = raw[fips]; fipscode = raw[index];.

also, should hasownproperty check when looping through object, avoid attempting process methods , such. try this:

for (var index in raw) {     if (raw.hasownproperty(index)) {         fipscode = raw[index];         console.log(fipscode);     } } 

if doesn't work then, if can show sample of of returned data, make easier keep troubleshooting.