juniorVue.js
What is 'Vue DevTools' and how does it help with debugging?
Updated May 4, 2026
Short answer
It is a browser extension for inspecting Vue component hierarchies, state, and events.
Deep explanation
It allows you to: 1) Inspect the live data of any component. 2) Track Pinia/Vuex state changes with time-travel. 3) Monitor performance (Timeline). 4) Trigger events and see their payloads. It is indispensable for modern Vue development.
Real-world example
Finding out exactly which component is responsible for a piece of data that is appearing incorrectly in the UI.
Common mistakes
- Leaving it enabled in production (it should be disabled/stripped for security and performance).
Follow-up questions
- Can you edit component state directly in DevTools?