Why we use cacheable true in LWC?
To set cacheable=true , a method must only get data, it can’t mutate (change) data. Marking a method as cacheable improves your component’s performance by quickly showing cached data from client-side storage without waiting for a server trip.
What is Locker API in Salesforce?
Locker API Viewer shows Locker’s support of the standard DOM APIs in the Window, Document, and Element objects. The Secure Window, Secure Document, and Secure Element wrappers prevent use of APIs that are labelled Not Supported.
Why do we use @wire in LWC?
Wiring a property with @wire is useful when you want to consume the data or error. If the property decorated with @wire is used as an attribute in the template and its value changes, the wire service provisions(requests) the data and triggers the component to rerender.Dec 6, 2020
How do I view lightning components in Salesforce?
From Setup, enter Lightning Components in the Quick Find box, then select Lightning Components.
Why are decorators used in LWC?
Decorators dynamically alter the functionality of a property or function. The ability to create decorators is part of ECMAScript, but these three decorators are unique to Lightning Web Components. @api: It is used to expose a variable or functions publically and make properties reactive.
What is a enqueueAction action in lightning?
enqueueAction(action) adds the server-side controller action to the queue of actions to be executed. All actions that are enqueued will run at the end of the event loop.
How do you see the preview of lightning component?
You can use the force:lightning:lwc:preview command to launch a preview in an iOS or Android native mobile app that you provide.
What is Locker Service in Salesforce lightning?
Locker Service is a security architecture for Lightning components. Locker Service enhances security by isolating Lightning components that belong to one namespace from components in a different namespace.
What is the use of @wire in Salesforce?
Why we use @AuraEnabled cacheable true?
Caching Method Results To improve runtime performance, set @AuraEnabled(cacheable=true) to cache the method results on the client. To set cacheable=true , a method must only get data. It can’t mutate data.
Why do we need locker service?
Locker Service is a powerful security architecture for Lightning components. Locker Service enhances security by isolating Lightning components that belong to one namespace from components in a different namespace.
What is the difference between aura and LWC?
Why do we need locker service in Salesforce?
Locker Service tightens Content Security Policy (CSP) to eliminate Cross-Site Scripting (XSS), clickjacking and other code injection attacks resulting from execution of malicious content in the trusted web page context.
How do I disable a locker in Salesforce?
You can disable Locker Service for a component by setting API version 39.0 or lower for the component. If a component is set to at least API version 40.0, Locker Service is enabled.