💚

Top 51 Vue.js Interview Questions & Answers (2026)

51 Questions 31 Beginner 14 Intermediate 6 Advanced

About Vue.js

Top 100 Vue.js interview questions covering components, directives, Composition API, Vuex, Pinia, Vue Router, reactivity system, performance optimization, and Vue 3 features. Companies hiring for Vue.js roles test this knowledge at every stage — from first-round screens that check the basics to final-round conversations about real-world trade-offs.

What to Expect in a Vue.js Interview

Expect a mix of conceptual and practical Vue.js questions: clear definitions and core-concept checks for junior roles, hands-on scenario questions for mid-level roles, and architecture or trade-off discussions for senior roles. Interviewers usually move from foundational topics toward the kind of problems you'd actually face on the job.

How to Use This Guide

Work through the Vue.js questions in order — Beginner, then Intermediate, then Advanced — so each concept builds on the last. Every question has its own page; bookmark the ones that trip you up and revisit them the day before your interview.

Curated by Tech Baithak Editorial Team · Last updated: May 2026

Beginner 31 questions

Core concepts every Vue.js developer must know.

01 What is Vue.js? 02 What is the difference between Vue 2 and Vue 3? 03 What is the Vue instance and how do you create one? 04 What are Vue components? 05 What is Vue's reactivity system? 06 What are props in Vue? 07 What are Vue directives? 08 What is the difference between v-if and v-show? 09 What is v-model in Vue? 10 What are computed properties in Vue? 11 What are watchers in Vue? 12 What are Vue lifecycle hooks? 13 What is the Composition API in Vue 3? 14 What is the Options API in Vue? 15 What are Vue slots? 16 What is Vue Router? 17 What is Vuex? 18 What is Pinia? 19 What are Vue template refs? 20 What is the provide/inject pattern in Vue? 21 What is the key attribute in Vue? 22 What is Vue's v-bind and object syntax? 23 What is Vue event handling? 24 What is the Vue transition system? 25 What is <KeepAlive> in Vue? 26 What is the defineProps and defineEmits in Vue 3 script setup? 27 What is Vue's Teleport component? 28 What are Vue composables? 29 What are custom directives in Vue 3? 30 What are Vue filters and why were they removed in Vue 3? 31 What is Vue's nextTick?

Intermediate 14 questions

Practical knowledge for developers with hands-on experience.

01 What is the Composition API and how do composables work? 02 What is Vue's reactivity in depth — ref vs reactive? 03 What are Vue 3 Teleport and Suspense? 04 What is Vue's virtual DOM and how does the diffing algorithm work? 05 What is Vue's reactivity with watchEffect and its nuances? 06 What is Vue's component communication patterns? 07 What are Vue Router navigation guards in detail? 08 What is Vue's server-side rendering (SSR) with Nuxt? 09 What is the Vue 3 Suspense API and async components? 10 How does Vue 3 handle TypeScript? 11 What is Vue 3 performance optimization techniques? 12 What is Vue's scoped slots pattern? 13 What is Pinia in depth? 14 What are advanced Vue Router patterns?

Advanced 6 questions

Deep expertise questions for senior and lead roles.

01 How does Vue 3's Proxy-based reactivity system work internally? 02 What is Vue's compiler and how does it optimize templates? 03 How does Vue handle SSR hydration? 04 What is Vue's renderless component and headless UI pattern? 05 What is Vue's plugin system? 06 What is Vue 3 script setup deep dive?

Back to All Topics 51 questions total