Named slots and scoped slots in Vue - Interactive Code Practice

Practice - 5 Tasks

1fill in blank

easy

Complete the code to define a named slot called "header" in a Vue component.

Vue

<template>
  <div>
    <slot name="[1]"></slot>
  </div>
</template>

Drag options to blanks, or click blank then click option'

Aheader

Bfooter

Cdefault

Dcontent

Attempts:

3 left

💡 Hint

Common Mistakes

Using the default slot name instead of the named slot.

Forgetting to add the name attribute to the slot.

The named slot is defined using the name attribute on the <slot> element. Here, the slot is named "header".

2fill in blank

medium

Complete the code to provide content for the named slot "footer" in the parent component.

Vue

<ChildComponent>
  <template v-slot:[1]>
    <p>This is the footer content.</p>
  </template>
</ChildComponent>

Drag options to blanks, or click blank then click option'

Adefault

Bheader

Cfooter

Dsidebar

Attempts:

3 left

💡 Hint

Common Mistakes

Using the wrong slot name in v-slot.

Not using template with v-slot for named slots.

To provide content for a named slot, use v-slot:name where name matches the slot's name in the child component.

3fill in blank

hard

Fix the error in the scoped slot usage by completing the blank to access the slot prop named "user".

Vue

<ChildComponent>
  <template v-slot:default="[1]">
    <p>User name: {{ slotProps.user.name }}</p>
  </template>
</ChildComponent>

Drag options to blanks, or click blank then click option'

Aprops

Bslot

Cscope

DslotProps

Attempts:

3 left

💡 Hint

Common Mistakes

Using a different variable name than the one declared in v-slot.

Not using quotes or braces correctly in v-slot.

The object passed to the scoped slot is often named by the developer. Here, it is named slotProps to access the user property.

4fill in blank

hard

Fill both blanks to correctly define a scoped slot named "item" and access its prop "info".

Vue

<template>
  <slot name="[1]" :[2]="info"></slot>
</template>

Drag options to blanks, or click blank then click option'

Aitem

Bdata

Cinfo

Dvalue

Attempts:

3 left

💡 Hint

Common Mistakes

Mixing up the slot name and prop name.

Forgetting the colon before the prop name.

The slot is named "item" and it passes a prop named "info" to the parent via :info="info".

5fill in blank

hard

Fill all three blanks to correctly use a scoped slot named "preview" with prop "item" and display its "title".

Vue

<ChildComponent>
  <template v-slot:[1]="[2]">
    <h3>{{BLANK_3.title}}</h3>
  </template>
</ChildComponent>

Drag options to blanks, or click blank then click option'

Apreview

Bitem

Dcontent

Attempts:

3 left

💡 Hint

Common Mistakes

Using different names for the slot prop in v-slot and inside the template.

Forgetting to bind the slot prop variable in the template tag.

The scoped slot is named "preview". The slot prop is named "item" and used inside the template to show item.title.

Practice

1. What is the main purpose of named slots in Vue components?

easy

A. To handle component lifecycle hooks

B. To share data from parent to child components

C. To create reactive state inside a component

D. To place different content in specific parts of a component

Solution

1. Step 1: Understand named slots concept

   Named slots allow you to define multiple placeholders inside a component where different content can be inserted.

2. Step 2: Identify the purpose of named slots

   They help organize content by placing it in specific parts of the component template.

3. Final Answer:

   To place different content in specific parts of a component -> Option D

4. Quick Check:

   Named slots = specific content placement [OK]

Hint: Named slots = different content in specific places [OK]

Common Mistakes:

• Confusing named slots with props
• Thinking named slots share data
• Mixing named slots with lifecycle hooks

2. Which of the following is the correct syntax to define a named slot called header inside a Vue component?

easy

A.

B.

C.

D.

Solution

1. Step 1: Recall named slot syntax in Vue

   Named slots are defined using the element with a name attribute.

2. Step 2: Match correct syntax

   The correct syntax is . Other options are invalid or deprecated.

3. Final Answer:

   <slot name="header"></slot> -> Option C

4. Quick Check:

   Named slot syntax = <slot name="..."> [OK]

Hint: Named slots use syntax [OK]

Common Mistakes:

• Using which is deprecated
• Trying to create custom tags like
• Confusing named slots with props

3. Given this parent usage of a scoped slot:

<MyList>
  <template #item="{ item }">
    <li>{{ item.text }}</li>
  </template>
</MyList>

And this child component template:

<ul>
  <slot name="item" :item="listItem"></slot>
</ul>

What will be rendered if listItem is { text: 'Hello' }?

medium

A. Hello

B.

C. {{ item.text }}

D.

Solution

1. Step 1: Understand scoped slot data passing

   The child passes listItem as item to the slot content using :item="listItem".

2. Step 2: Parent uses slot scope to access item.text

   The parent template receives item and renders <li>{{ item.text }}</li>, which becomes <li>Hello</li>.

3. Final Answer:

   <ul><li>Hello</li></ul> -> Option A

4. Quick Check:

   Scoped slot passes data = rendered content [OK]

Hint: Scoped slots pass data object to slot content [OK]

Common Mistakes:

• Ignoring the slot scope and expecting raw slot tags
• Not using the slot props correctly in parent
• Confusing named slots with scoped slots

4. Identify the error in this Vue component usage:

<MyComponent>
  <template slot="footer">Footer Content</template>
</MyComponent>

Assuming MyComponent defines a named slot footer using <slot name="footer">.

medium

A. Missing v-slot directive on template

B. Using deprecated slot attribute instead of #footer shorthand

C. Named slot must be inside MyComponent template, not usage

D. No error, this is correct syntax

Solution

1. Step 1: Check slot syntax in Vue 3

   The slot attribute on template is deprecated in Vue 3.

2. Step 2: Identify correct syntax for named slots

   Use v-slot:footer or shorthand #footer instead of slot="footer".

3. Final Answer:

   Using deprecated slot attribute instead of #footer shorthand -> Option B

4. Quick Check:

   Use v-slot or # for named slots [OK]

Hint: Use v-slot or #, not slot attribute [OK]

Common Mistakes:

• Using old slot attribute syntax
• Confusing slot definition with slot usage
• Thinking no syntax change in Vue 3

5. You want to create a reusable Card component with named slots for header, body, and footer. The body slot should receive a scoped prop info from the component. Which is the correct way to define the Card template?

hard

A.

B.

C.

D.

Solution

1. Step 1: Identify named slots and scoped props

   The body slot must receive the scoped prop info from the component's data.

2. Step 2: Check slot definitions

   Only the body slot has :info='cardInfo' to pass the scoped prop. The others are simple named slots without props.

3. Final Answer:

   Correct template with named slots and scoped prop on body slot -> Option A

4. Quick Check:

   Scoped prop on body slot only [OK]

Hint: Pass scoped props only on slots needing data [OK]

Common Mistakes:

• Passing scoped props on wrong slots
• Missing scoped prop on body slot
• Using default slot instead of named slots