LWC Interview Questions for Freshers and Experienced

                        Lightning Web Components 


1. What is LWC?

2. What is the difference between Salesforce Lighting and LWC?

3. Explain the lifecycle hooks of an LWC component.

4. What are the benefits of using LWC over traditional JavaScript frameworks?

5. Explain the concept of data binding in LWC?

6. How do you handle user events in LWC?

7. What are decorators? List some built-in decorators provided by LWC.

8. Explain in detail about @api and @track decorators in LWC.

9. How do you handle user input in LWC forms?

10. How can you render multiple templates in LWC?

11. Explain ‘ @AuraEnabled(cacheable=true)’ Annotation. Give an example of how you can use    it.

12. Can you explain the difference between the component event and the application event in     LWC?

13. Explain Bounded and Unbounded Expressions in LWC.

14. What is the role of the Lightning Message Service in LWC?

15. Can you explain the role of the Salesforce Object Query Language (SOQL) in LWC?

16. Explain the difference between a getter and a setter in LWC?


LWC Interview Questions for Experienced

1. How do you create a Lightning App that embeds an LWC component?

2. Can you explain how to use the LWC component cache and why it is important for performance?

3. Can you explain how to use the JavaScript Promises in LWC and give an example?

4. How do you use the Salesforce REST API in LWC? What are the best practices for integrating     with external systems?

5. What are the best practices that you should follow for integrating with external systems?

6. What are the best practices for building reusable LWC components?

7. Can you explain how to use the Lightning Message Service in LWC and give an example?

8. What is the purpose of the Lightning Data Service in LWC?

9. How do you ensure that your LWC components adhere to the accessibility standards and           guidelines?

10. What is the role of the Shadow DOM in LWC, and how does it differ from the traditional          DOM?

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