Function expression, returning callback function

Question

After looking at and experimenting with this code I have been unable to figure out what is going on and how I can use the information that is returned.

Where is "return callback(err, res, body)" returning to?

edit: I want to return the data stored in 'body' but its scope is only in that function thats in the call to 'request'. How do I get the data 'body' to return all the way out when i call 'makerequest' so i can use the 'body' data. I hope I am making sense

var makerequest = function(set_parameters, callback) {

         ....

 request(URL, function(err, res, body){
    return callback(err, res, body);
 });
};

We don't really know what `request` is doing with the result, but usually `return`ing in an asynchronous callback is futile and should not be done. — Bergi, May 15 '16 at 07:18
"*How do I get the data 'body' to return all the way out to where i call 'makerequest'*" - that's impossible. It's asynchronous. — Bergi, May 15 '16 at 07:20

score 0 · Answer 1 · answered May 15 '16 at 05:50

0

You access the JSON in the callback function:

makerequest(set_parameters, function(err, res, body){
      //do stuff with the body here
})

answered May 15 '16 at 05:50

Tudor Constantin

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How do I make it so I can get 'body' to return from that inner funtion ie: var temp = makerequest(..) and that gives me back 'body' and stores it as temp. – SmokeyOneKenobi May 15 '16 at 07:19
That's not possible with javascript's asynchronicity – Tudor Constantin May 15 '16 at 08:30

Function expression, returning callback function

1 Answers1