How can I check if a value is a json object?

Question

My server side code returns a value which is a json object on success and a string \'false\' on failure. Now how can I check whether the returned value is a json object?

Answer 1

You should return json always, but change its status, or in following example the ResponseCode property:

if(callbackResults.ResponseCode!="200"){
    /* Some error, you can add a message too */
} else {
    /* All fine, proceed with code */
};