Data Binding in LWC

Data Binding in LWC

1. Bind properties in a component’s template to properties in the component’s JavaScript class.
2. In the template, surround the property with curly braces without spaces: {property}. To compute a value for the property, use a JavaScript getter in the JavaScript class, get property(){}.
3. In the template, the property can be a JavaScript identifier (for example, person) or dot notation that accesses a property from an object (person.firstName). 

Type Of Data Binding In LWC:

• One-way data binding in LWC
• Two-Way data binding in LWC

One-way data binding in Lightning Web Components (LWC) refers to the flow of data in a single direction, from the component's JavaScript controller to the template (HTML). This means any changes in the JavaScript properties will automatically reflect in the HTML, but not the other way around.

Two-way data binding in Lightning Web Components (LWC) allows data to flow in both directions: from the component's JavaScript controller to the template (HTML) and from the template back to the JavaScript controller. This is particularly useful for form elements, where changes made by the user need to be reflected in the component's state.

Example One-way Data Binding: Create a LWC component to define One-Way Data Binding.[Js Controller To HTML]

HTML Code:oneWayDataBinding.html

Javascript Code:oneWayDataBinding.js

Configuration Code:oneWayDataBinding.js-meta.xml

Two-way DataBinding in Lwc Examle

html code

JavaScript Code