Different callbacks for error or error as first argument?

Posted by Florian Margaine on Programmers See other posts from Programmers or by Florian Margaine
Published on 2012-04-12T10:35:22Z Indexed on 2012/04/12 11:41 UTC
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JavaScript

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error-handling

We (and the JS SO chat room) had a talk with @rlemon some days ago about his Little-XHR library about error handling.

Basically, we wanted to decide which error handling pattern should be used:

xhr.get({
    // Some parameters, and then
    success: function(data) {},
    failure: function(data) {}
})

Or:

xhr.get({
    // Some parameters, and then
    callback: function(err, data) {}
})

One is more jQuery-like, while the other is more Node-like. Some say that the first pattern makes you think more about handling error. I think the opposite, since you may forget the other callback function, while the argument is always there on the second pattern.

Any opinion/advantage/drawback about both these patterns?

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