Beginner's Guide to Knockout.js
This post captures everything you need to know about Knockout.js including its key features and benefits.
Table of contents
- What is Knockout.js?
- Key Features of Knockout.js
- Why use Knockout.js?
- Knockout vs jQuery
What is Knockout.js?
Key Features of Knockout.js
Following are the key features of Knockout.js:
Knockout.js is based on the MVVM framework
- Model: A model is a representation of information or data. It only saves information, not behaviors or services that manipulate it. It is accomplished with the assistance of the View and View Model, which are linked by a two-way data binding mechanism.
- View: For the end-user, a View is a physical representation of the data. An HTML template with Knockout bindings is referred to as a view. To show and change data, the view makes use of data-bind attributes. It includes HTML elements like buttons, photos, grids, and links, among others.
MVVM frameworks are particularly well suited to the creation of dynamic user interfaces. By separating issues, such as GUI (graphical user interface) rendering logic from application logic, MVVM simplifies application development.
When your data model changes, this automatically updates the appropriate elements of your UI. This is accomplished through the use of two-way bindings and a specific sort of variable known as observable. For dependency tracking, you don't need to worry about adding event handlers and listeners.
When your application becomes more complicated and you need the means to display a rich structure of view model data while keeping your code simple, this comes in helpful. Knockout's template binding can employ a variety of template engines. Knockout comes with a built-in template engine that you can use straight away and configure how the data and template are combined to generate the markup.
Custom behaviors are implemented as new declarative bindings that can be reused in only a few lines of code. Knockout is also adaptable enough to work with a variety of other libraries and technologies.
Automatic UI Refresh
When the view model is changed, the UI is automatically updated, and vice versa.
Steve Sanderson maintains Knockout.js, a free and open-source project. Knockout.js is quickly growing in popularity, despite the fact that it is backed by a tiny community of developers. On its website, there is a large collection of online tutorials, app samples, and documentation. On Stack Overflow, you may also discover information on web development with Knockout.js.
Why use Knockout.js?
Here is a summary of the key benefits of using Knockout.js -
- The KnockoutJS library is a compact and lightweight file.
- KnockoutJS is a framework-agnostic framework. It works with other client-side and server-side technologies.
- Most importantly, KnockoutJS is free to use because it is open source.
- KnockoutJS comes with extensive documentation. Full documentation, including API documents, live examples, and interactive lessons, is available on the official site.
Knockout vs jQuery
Knockout.js is not a replacement for jQuery, as you may have deduced from this post. There is no rivalry between the two, and a developer should collaborate with them both. When using jQuery, the developer saves time, whereas Knockout is primarily used for data binding. Also, because many issues are automatically implemented, such as updating necessary changes in the UI and backend and vice versa, there is less need for coding