Discuss the concept of bindings in Knockout.js.

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Ashutosh Kumar Verma · Answer

Knockout.js Bindings
Bindings in Knockout.js are a key concept that facilitate communication between your HTML elements (view) and your JavaScript data model (view model). Bindings allow you to declaratively link UI elements to data properties or behavior defined in your view model.
Overviews
Bindings in Knockout.js are specified by the data-bind attribute of HTML elements. This object tells Knockout.js what to bind and how to bind it.
Example: andlt;span data-bind="text: firstName">andlt;/span> binds the 
text content of the andlt;span> element to the firstName observable in your view model.
Types of Bindings
There are several types of knockout.js bindings that are as follow,
Text Binding (text)
Updates the content of an element based on the value to be checked.
andlt;span data-bind="text: firstName">andlt;/span>
Visible Binding (Visible) Controls the visibility of an element based on a visible value (true/false).
andlt;div data-bind="visible: isVisible">Visible when trueandlt;/div>
and 
CSS Binding (css) Dynamically adds or removes CSS classes based on a tangible value.
andlt;div data-bind="css: { active: isActive, error: hasError }">...andlt;/div>
and 
Value binding (value) 
binds the value of form elements (such as andlt;input>, andlt;select>, andlt;textarea>) to the observable.
andlt;input type="text" data-bind="value: userInput" />
and 
Event binding (click, 
submit, etc.) Binds DOM events to methods or functions in your visual model.
andlt;button data-bind="click: handleClick">Click meandlt;/button>
and 
Bindings in Knockout.js form the backbone of its data binding capabilities, allowing developers to easily create dynamic and responsive web applications.
and 
Also, Read: What are custom bindings in Knockout.js?

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Discuss the concept of bindings in Knockout.js.

Ashutosh Kumar Verma

1 Answers

Knockout.js Bindings

Types of Bindings

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