A Knockout.js plugin that defers and batches observable updates to eliminate duplicate computations and improve performance.
Knockout Deferred Updates is a plugin for Knockout.js (versions ≤3.3.0) that modifies the observable system to use deferred updates. It batches multiple dependency changes into single updates, eliminating duplicate computations and improving application performance. The plugin automatically works with most Knockout applications to provide immediate performance benefits.
Frontend developers building complex data-driven applications with Knockout.js who need to optimize performance, especially those dealing with deep observable dependency trees or frequent observable updates.
Developers choose this plugin because it provides automatic performance optimization without major code changes, eliminates duplicate updates more efficiently than throttling, and offers fine-grained control through its task scheduler interface when needed.
Deferred Updates plugin for Knockout <=3.3.0
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Batches multiple dependency changes into single updates, eliminating redundant computations as described in the README's key features, which reduces unnecessary UI re-renders.
Works with most existing Knockout applications without code changes, providing an immediate performance boost as highlighted in the 'It just works' section.
Uses a single setTimeout for batched updates, more efficient than individual throttled updates, as noted in the README's comparison to throttle.
Allows enabling or disabling deferred updates globally or per computed observable/subscription using the deferUpdates property or deferred extender, offering fine-grained management.
As of Knockout 3.4.0, deferred updates are included natively, making this plugin redundant for newer versions and potentially unsupported, as mentioned in the README note.
Can break code that assumes immediate UI updates, requiring modifications to use ko.tasks.processImmediate or ko.processAllDeferredBindingUpdates, as warned in the README's Notes section.
Introduces new concepts like the task scheduler and forces developers to handle edge cases for DOM access, increasing the learning curve compared to vanilla Knockout.