Salesforce Lightning Interview Questions and Answers

Ques 11. Explain Lightning Data Service (LDS).

Lightning Data Service is a standard controller for Lightning components that enables efficient access to data without the need for Apex code.

Example:

LDS automatically loads and caches records, reducing the need for server calls in Lightning components.

Ques 12. How do you handle errors in Lightning components?

Errors in Lightning components can be handled using the try-catch block in JavaScript or by using the Lightning:notificationsLibrary component.

Example:

You can display error messages to users or log errors for debugging purposes.

Ques 13. What is the purpose of the Lightning Design System (SLDS)?

The Lightning Design System is a CSS framework provided by Salesforce for building responsive and consistent user interfaces.

Example:

SLDS ensures a unified look and feel across all Salesforce applications and components.

Ques 14. How do you implement a Lightning Component in a Visualforce page?

You can use the tag to include a Lightning Component in a Visualforce page.

Example:

Ques 15. What is Lightning Out?

Lightning Out allows you to embed Lightning components in external web pages using JavaScript.

Example:

It extends the use of Lightning components beyond the Salesforce platform.