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Vueframework~5 mins

Navigation guards (beforeEach, beforeEnter) in Vue - Cheat Sheet & Quick Revision

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Recall & Review
beginner
What is the purpose of beforeEach navigation guard in Vue Router?

beforeEach runs before every route change. It lets you check or stop navigation globally, like checking if a user is logged in before allowing access.

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beginner
How does beforeEnter differ from beforeEach in Vue Router?

beforeEnter runs only for a specific route, not globally. It guards just that route, so you can add checks only where needed.

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intermediate
What arguments do beforeEach and beforeEnter receive?

Both receive to (target route), from (current route), and next (function to continue or stop navigation).

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intermediate
How do you stop navigation inside a beforeEach guard?

Call next(false) to cancel navigation and stay on the current page.

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beginner
Give an example use case for beforeEnter guard.

Use beforeEnter to check if a user has permission before entering an admin page, redirecting them if not allowed.

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Which navigation guard runs before every route change in Vue Router?
AbeforeEach
BbeforeEnter
CafterEach
DbeforeRouteLeave
Where do you define a beforeEnter guard?
AInside a component's methods
BGlobally on the router instance
CInside a specific route's configuration
DIn the main.js file
What does calling next(false) inside a navigation guard do?
AProceeds to the next route
BCancels the navigation
CRedirects to a new route
DThrows an error
Which arguments do beforeEach and beforeEnter receive?
Ato, from, next
Bevent, context, next
Croute, params, callback
Drequest, response, next
If you want to check user login status before any route change, which guard should you use?
AbeforeEnter
BbeforeRouteUpdate
CafterEach
DbeforeEach
Explain how beforeEach and beforeEnter guards work in Vue Router and when to use each.
Think about guarding all routes versus just one route.
You got /5 concepts.
    Describe how to stop or redirect navigation inside a Vue Router navigation guard.
    Remember the role of the next function.
    You got /3 concepts.