29 Classic Vue Interview Questions Summary

This article compiles 29 essential Vue interview questions covering Vue 3 design goals, performance optimizations, component structure, Vuex architecture, routing techniques, Composition vs Options API, and common pitfalls, providing a comprehensive study guide for frontend developers preparing for technical interviews.

01 – What are the design goals of Vue 3.0 and what optimizations were made?

02 – Which Vue performance optimization methods do you know?

03 – Why can a Vue component only have one root element?

04 – In larger projects, Vuex modules should be split for maintainability; explain this basic capability test.

05 – How to implement route lazy loading?

06 – Differences between ref and reactive .

07 – Differences between watch and watchEffect .

08 – What is the difference between SPA and SSR?

09 – What is vue-loader and what does it do?

10 – Have you written custom directives? What are the use cases?

11 – Explain the usage scenarios of $attrs and $listeners .

12 – What are the use cases of v-once ?

13 – What is a recursive component? Provide an example.

14 – What is an async component? What are its use cases?

15 – How do you handle errors in a Vue project?

16 – If you were to write a Vuex store from scratch, what would be your approach?

17 – What is the difference between actions and mutations in Vuex?

18 – How would you optimize rendering large data sets in Vue? Explain your thinking.

19 – How to watch changes in Vuex data?

20 – How do router-link and router-view work?

21 – Besides router-link , how can you achieve navigation in Vue Router?

22 – What performance improvements does Vue 3.0 bring?

23 – Why does Vue 3.0 use Proxy instead of defineProperty ?

24 – Difference between History mode and Hash mode.

25 – In what scenarios would you use nested routes?

26 – How to solve Vuex state data loss after a page refresh?

27 – What do you think are the drawbacks of Vuex?

28 – What are the differences between Composition API and Options API?

29 – How to protect routes in vue-router?