What are the different API styles available?
Interviewer Expectations for this Question
01
Core Competency
Assesses fundamental understanding of Vue.js conventions, runtime behavior, and memory/performance considerations.
02
Evaluation Criteria
Hiring managers look for precision, avoidance of ambiguous jargon, and ability to explain trade-offs under real production conditions.
Comprehensive Model Answer
Verified Solution
The Vue components can be created in two different API styles
- Options API: The Options API uses component logic using an object of options such as
data,props,
computed, methods and life cycle methods etc. The properties will be accessible inside functions using
component instance(i.e, this).
- Composition API: The Composition API uses component logic using imported API functions. The Single File
Components(SFCs) requires setup attribute(<script setup>) to use imported variables and functions directly
inside template section.
Candidate Response Strategy & Interview Tips
- Start with a concise one-sentence summary: Deliver a direct, confident answer first before expanding into nuances.
- Demonstrate real-world trade-offs: Discuss where this approach excels and when you would avoid it in production systems.
- Discuss complexity & edge cases: Proactively explain time/space complexity or boundary conditions (null values, scale limits).
- Prepare for interviewer follow-ups: Technical hiring panels frequently probe deeper into concurrency, backward compatibility, or alternative libraries.