MochiKit.Async: Seamless Asynchronous Task Management
In Order To Avoid Any Exploit To Json’s Common Usage, There Are A Few Methods
- Using non-standard additions and adding constructs for preventing script tag parsing like wrapping data in infinite loop or comment.
- Requiring authentication token for URL
- Allowing POST requests only for accessing sensitive JSON.
While encapsulating a single value, which is unavailable yet, the deferred constructor is needed. For example, you can consider the XMLHttpRequest for the server because the Deferred here allows consistent API for all the asynchronous computations occurring exactly once. All the complicated jobs like waiting for timer or event, or coordinating various events or various Deferreds are done by the developer. As these tasks don’t respond quickly, the Deferred producer follows the steps –
- Creating new Deferred(); object while keeping a reference
- Setting up probable conditions for creating requested values
- Returning Deferred object.
As the value is unavailable, consumer needs to attach a function with the Deferred to be approached when value will be ready. Besides, by attaching “errback” with Deferred, error handling gets so much easier.