What Is Knockout.Js | Full Explaination About knockout.js

1. Introduction to Knockout.js

• What is Knockout.js?
  Knockout.js is a lightweight JavaScript library that enables two-way data binding between JavaScript models and the UI, based on the MVVM (Model-View-ViewModel) pattern.

• Why Use Knockout.js?

  • Simplifies UI updates by automatically syncing data between the model and UI.

  • Works well with SPAs (Single Page Applications).

  • No dependency on other frameworks, but can be used with jQuery or other libraries.

2. MVVM Architecture

Model

• Represents the application’s data (retrieved from a database, API, etc.).

View

• HTML template that displays the UI.

ViewModel

• The bridge between the View and the Model, using Knockout observables to sync them.

3. Observables & Computed Observables

Observables

• Special Knockout properties that automatically notify changes.

• Example:

                        var viewModel = {
                                  name: ko.observable("John Doe")
                        };

4. Declarative Bindings

Knockout.js uses data-bind attributes to bind JavaScript properties to UI elements.

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