Question

I have this JSon string received from an AJAX call:

{status:OK,addresses:[0,1,2,3,4,5]}

To convert it to a JSon object I have this line:

var jsonObj = eval(jsonString);

But an exception is thrown! This one has no message in the exception variable.
I also tried using

{"status":"OK","addresses":[0,1,2,3,4,5]}

And, yet again, an exception is thrown but saying that an unexpected character ‘&’ was found.

I’m using Struts2 and the JSon is received from an action.

Any help will be appreciated.
Thank you

Answer 1

{status:OK,addresses:[0,1,2,3,4,5]}

is not valid JSON because the quotes around status and addresses are missing, and is neither valid JSON nor valid JavaScript since the quotes around OK are missing.

Also, don’t use eval to parse JSON – it allows an attacker to execute arbitrary JavaScript in the context of your page. Instead, use the safe alternatives JSON.parse(built-in in modern browsers and other EcmaScript 5 implementations) or JSON2.