LWCBeginnerapeximperative
How do you call Apex from LWC?
Real World Scenario
On button click, you submit a form that creates a Case via server logic. You outline the pattern.
Expected Answer
• Import Apex method: import createCase from @salesforce/apex/CaseController.createCase
• Use imperative invoke for mutations: createCase({ fields }) then handle promise
• Mark read-only methods @AuraEnabled(cacheable=true) for wire; mutations omit cacheable
• Show spinner and toast on success or failure for user feedback
• Keep Apex bulk-safe even if UI sends one record today
Follow-Up Questions & Answers
Click to expand — each follow-up includes a direct, interview-ready answer
Annotation exposing Apex methods to Lightning components. Specify cacheable only for read methods without side effects.
Architect Perspective
Always mention toast + spinner—UX basics interviewers expect alongside code pattern.