Decorators : ‹ › In LWC decorators are used to add functionality to a property or function. There are three types of decorators : 1. @track 2. @api 3. @wire @track : It is used to make properties or methods in LWC is private. This properties is not accessible outside the LWC in which it is declared. @api : It is used to make properties or methods in LWC is public. This way they are accessible outside of the component in which they are declared. For ex : parent component can set the value of the properties in the child component. @wire : It is used to read the Salesforce data from apex class into LWC. It is generally used while making the server call to apex class. LWC Properties : There are two type of LWC properties. 1. Reactive Properties 2. Non-Reactive Properties Reactive Properties : In case of reactive properties , value of the properties change when the component re-render. There are two types of Reactive Properties. 1. Public properties -