Knockout.js Interview Questions and Answers

Knockout.js Interview Questions and Answers

Knockout is a standalone JavaScript implementation of the Model-View-View Model 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.

KnockoutJS was developed and is maintained as an open source project by Steve Sanderson, a Microsoft employee on July 5, 2010. As the author said, “It continues exactly as-is, and will evolve in whatever direction I and its user community wish to take it”, and stressed, “This isn’t a Microsoft product. KO is an abbreviation used for Knockout JS. KO supports all mainstream browsers – IE 6+, Firefox 3.5+, Chrome, Opera, Safari (desktop/mobile).

What is KnochOut?

Why Use Knockouts?

What are the Knockout Features?

What are benefits of Knockout?

What is an observable?

Can you define MVVM?

Can you explain Model, View and View Model?

How do you activate a Knockout Model?

How do you delete an item from a Knockout array?

How do you call a Knockout method using data bind concept?

Explain Declarative Binding?

What is Binding Context?

What is the Purpose of foreach binding?

Can you explain Observable Arrays?

What is Computed Observable?

What is Dependency tracker?

What are the two context properties in Knockout?

What is template in knockout?

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