Knockout (web framework)
JavaScript library
Knockout is a standalone JavaScript implementation of the model–view–viewmodel (MVVM) pattern with templates. The underlying principles are therefore:
a clear separation between domain data, view components and data to be displayed
the presence of a clearly defined layer of specialized code to manage the relationships between the view components
The latter leverages the native event management features of the JavaScript language.
These features streamline and simplify the specification of complex relationships between view components, which in turn make the display more responsive and the user experience richer.
Knockout was developed and is maintained as an open source project by Steve Sanderson.
Features
Knockout includes the following features:
Declarative bindings
Automatic UI refresh (when the data model's state changes, the UI updates automatically)
Dependency tracking Templating (contains a dedicated template engine, but other templating engines can be used)
Examples
1. In this example, two text boxes are bound to observable variables on a data model. The "full name" display is bound to a dependent observable, whose value is computed in terms of the observables. When either text box is edited, the "full name" display is automatically updated, with no explicit event handling.
ViewModel (JavaScript)
2. Creating Custom Binding Handlers in KnockoutJS
Use the ko.bindingHandlers object to specify your custom binding’s name and create an init or update function when creating a custom binding handler.
This brief starts where responsible research should: with the source description of “Knockout (web framework)” as javaScript library. Everything that follows is an evidence route, not borrowed authority.
Why this record matters
The subject matters to the places & architecture register because the source frames it as javaScript library. Its deeper value depends on whether names, dates, institutions and citations support that framing.
The strongest evidence will usually combine a dated visual record with documents produced by the authority responsible for the place. The source revision retrieved here is dated Jun 10, 2026. The linked authority identifier is Q1100240. 1 of 1 selected statements include explicit references; 1 carry qualifiers and 0 use preferred rank.
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Three-step research path
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Questions for further research
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This entry incorporates text from “Knockout (web framework)” on English Wikipedia. Contributors are listed in the page history. Text is available under the Creative Commons Attribution-ShareAlike 4.0 License. Selected authority identifiers and statements are retrieved from Wikidata under CC0; their references and qualifiers remain part of the verification path.