Reading an External json data - json

Question

My script is looking at json files created on the server and retrieved using
//this is the code that gets the JSON file
jQuery.get(link,data)
Alerting out 'data' shows the json text as valid:
{"menu":[{"link":"../chapter-1/index.html","title":"Chapter 1", "dl": "chapter-1"}
I try and parse the returned 'data' variable
obj = JSON.parse(data);
So that I can loop through it and do my additional tasks.
When I try and JSON.parse(data) it fails
//The loop
for (i = 0; i < obj.menu.length; i++) {
console.log(obj.menu[i].dl);
download_packet(obj.menu[i].dl, i);
}
When I add the json manually
obj = JSON.parse('{"menu":[{"link":"../chapter-1/index.html","title":"Chapter 1", "dl": "chapter-1"}]}');
It works.
I have tried to convert to string etc.
Anyone know what I am stuffing up? - There are no error messages in the console.
This is the whole snippet:
function download_items(link) {
jQuery.get(link, function(data) {
var obj = data;
var i;
for (i = 0; i < obj.menu.length; i++) {
console.log(obj.menu[i].dl);
}
});
}

Answer 1

#Malcolm Mclean - put me on the right track.I converted my object to string then parsed it and it worked. A bit inefficient but its working.
Thanks Mal!
The JSON had to be parsed correctly:
jQuery.get(link, function(data) {
var obj = String(json_object);
obj = JSON.parse(json_object);
}