Knockout is a JavaScript UI library that makes it easier to create rich, desktop-like user interfaces with JavaScript and HTML with a clean underlying data model.

Elegant dependency tracking automatically updates the right parts of your UI whenever your data model changes Declarative bindings.

Knockout has a flexible and sophisticated templating logic to create nested UIs as a function of your model data.

It works with any server or client-side technology and can be easily added on top of your existing web application without requiring major architectural changes.