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Editorial Team
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Asked: 2026-05-23T07:16:21+00:00

Current Asynchronous JavaScript calls require us to use a Callback function. This can lead

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Current Asynchronous JavaScript calls require us to use a Callback function. This can lead to “rabbit hole” code when you need to make a 2nd Ajax call based on data returned in a 1st Ajax call.

There have been attempts to make Asynchronous JavaScript calls without the use of Callbacks. Google, Narative.js. The goal being more manageable and readable code.

My question is, How does CoffeeScript handle Asynchronous JavaScript calls like Ajax? Are callbacks required or can Asynchronous calls be made without callbacks?

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  1. Editorial Team

    CoffeeScript doesn’t offer any particular features geared toward asynchronicity, because this would necessarily cause a large gap between CoffeeScript code and the JavaScript output. See the discussion about the proposed defer syntax:

    https://github.com/jashkenas/coffee-script/issues/350

    So, if you use CoffeeScript, you should deal with asynchronous behavior using the same idioms and libraries as in JavaScript. The difference is that your callbacks will be written as -> ... rather than function() {...}.

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