RouterLink for navigation in Vue - Cheat Sheet & Quick Revision

Recall & Review

beginner

What is <RouterLink> used for in Vue?

<RouterLink> is a special component in Vue Router that creates clickable links to navigate between pages without reloading the whole app.

beginner

How do you specify the target route in <RouterLink>?

You use the to attribute with a string path or an object describing the route to tell <RouterLink> where to go.

beginner

What happens when you click a <RouterLink> in a Vue app?

Clicking a <RouterLink> changes the URL and shows the new page component without reloading the browser, making navigation fast and smooth.

intermediate

How can you style an active <RouterLink>?

Vue Router adds a CSS class like <code>router-link-active</code> to the active link, so you can style it differently with CSS.

intermediate

Can <RouterLink> be used with dynamic route parameters?

Yes! You can pass an object to to with name and params to navigate to routes with dynamic parts.

What attribute do you use to set the destination in <RouterLink>?

A link

B href

C to

D target

The to attribute tells where to navigate.

What does <RouterLink> do differently than a normal <a> tag?

A Reloads the whole page

B Navigates without reloading the page

C Opens a new browser tab

D Does nothing

changes pages without reloading, making navigation faster.

How can you style the currently active <RouterLink>?

A You cannot style it

B Using the <code>active</code> attribute

C Using inline styles only

D Using the <code>router-link-active</code> CSS class

Vue Router adds router-link-active class to active links for styling.

Which of these is a valid way to use <RouterLink>?

A <RouterLink to="/home">Home</RouterLink>

B <RouterLink href="/home">Home</RouterLink>

C <RouterLink link="/home">Home</RouterLink>

D <RouterLink target="/home">Home</RouterLink>

The to attribute is correct for .

How do you pass parameters to a dynamic route with <RouterLink>?

A Use <code>:to="{ name: 'user', params: { id: 123 } }"</code>

B Use <code>to="/user/:id"</code>

C Use <code>href="/user/123"</code>

D Use <code>params="id=123"</code>

Passing an object with name and params is the correct way.

Explain how helps with navigation in a Vue app.

Think about how clicking a link changes the page smoothly.

Describe how to use with dynamic route parameters.

Focus on how to tell Vue Router which dynamic page to show.

Practice

1. What is the main purpose of the RouterLink component in Vue?

easy

A. To fetch data from an API

B. To style buttons with CSS

C. To create clickable links that navigate between pages without reloading

D. To manage application state

Solution

1. Step 1: Understand RouterLink's role

   The RouterLink component is designed to create links that navigate between different pages or views in a Vue app.

2. Step 2: Compare with other options

   Fetching data, styling buttons, and managing state are unrelated to navigation links.

3. Final Answer:

   To create clickable links that navigate between pages without reloading -> Option C

4. Quick Check:

   RouterLink = navigation links [OK]

Hint: RouterLink is for navigation links, not data or styling [OK]

Common Mistakes:

• Confusing RouterLink with data fetching methods
• Thinking RouterLink manages app state
• Assuming RouterLink styles elements

2. Which of the following is the correct syntax to create a RouterLink to the path '/home'?

easy

A. Home

B. Home

C. Home

D. Home

Solution

1. Step 1: Recall RouterLink attribute for navigation

   The correct attribute to specify the destination path is to, not href, link, or path.

2. Step 2: Verify syntax correctness

   Using to='/home' inside <RouterLink> is the standard Vue Router syntax.

3. Final Answer:

   <RouterLink to='/home'>Home</RouterLink> -> Option A

4. Quick Check:

   Use 'to' attribute for RouterLink path [OK]

Hint: RouterLink uses 'to' attribute, not 'href' [OK]

Common Mistakes:

• Using 'href' instead of 'to'
• Using non-existent attributes like 'link' or 'path'
• Forgetting to close the RouterLink tag properly

3. Given this Vue template snippet:

<RouterLink to='/about'>About</RouterLink>

What happens when the user clicks this link?

medium

A. The page reloads and navigates to '/about'

B. Nothing happens because RouterLink requires a click handler

C. An error is thrown because 'to' is not a valid attribute

D. The app navigates to '/about' without reloading the page

Solution

1. Step 1: Understand RouterLink navigation behavior

   RouterLink navigates within the Vue app using client-side routing, so it changes the page without a full reload.

2. Step 2: Check attribute validity

   The to attribute is valid and specifies the target route.

3. Final Answer:

   The app navigates to '/about' without reloading the page -> Option D

4. Quick Check:

   RouterLink navigates without reload [OK]

Hint: RouterLink changes page without reload on click [OK]

Common Mistakes:

• Thinking RouterLink causes full page reload
• Believing RouterLink needs extra click handlers
• Confusing 'to' attribute as invalid

4. Identify the error in this RouterLink usage:

<RouterLink to='/contact'>Contact</RouterLink>

and explain why it might not work as expected.

medium

A. RouterLink must be imported and registered before use

B. The 'to' attribute should be 'href' for RouterLink

C. RouterLink requires a closing slash like <RouterLink />

D. The text inside RouterLink must be wrapped in a span

Solution

1. Step 1: Check attribute correctness

   The 'to' attribute is correct for RouterLink; 'href' is incorrect.

2. Step 2: Verify component usage requirements

   RouterLink must be imported from 'vue-router' and registered or globally available to work properly.

3. Final Answer:

   RouterLink must be imported and registered before use -> Option A

4. Quick Check:

   RouterLink needs import and registration [OK]

Hint: Always import and register RouterLink before using [OK]

Common Mistakes:

• Using 'href' instead of 'to'
• Forgetting to import RouterLink
• Thinking RouterLink needs self-closing tag

5. You want to style the active RouterLink differently. Which attribute or feature should you use to apply a CSS class when the link is active?

hard

A. Add a click event to change the class manually

B. Use the 'active-class' attribute on RouterLink

C. Use the 'class' attribute with a fixed class name

D. Wrap RouterLink in a div and style the div

Solution

1. Step 1: Recall RouterLink active styling feature

   RouterLink supports an active-class attribute that automatically applies a CSS class when the link matches the current route.

2. Step 2: Compare with other options

   Manually changing classes or wrapping in divs is unnecessary and less efficient.

3. Final Answer:

   Use the 'active-class' attribute on RouterLink -> Option B

4. Quick Check:

   Active link styling uses 'active-class' [OK]

Hint: Use 'active-class' to style active RouterLink automatically [OK]

Common Mistakes:

• Trying to style active links manually with click events
• Using fixed class without active detection
• Styling parent div instead of RouterLink