Named slots in Svelte - Cheat Sheet & Quick Revision

Recall & Review

beginner

What is a named slot in Svelte?

A named slot is a way to define multiple placeholders inside a component where different content can be inserted by the parent component. Each slot has a unique name to identify it.

beginner

How do you define a named slot inside a Svelte component?

Use the element with a name attribute, like . This creates a placeholder named 'header' for content insertion.

beginner

How does a parent component provide content for a named slot?

The parent wraps content inside an element with the slot attribute matching the slot's name, for example:

Content

.

intermediate

What happens if a named slot is not filled by the parent component?

The content inside the named slot element in the child component acts as a fallback and is displayed instead.

beginner

Can you have multiple named slots in one Svelte component?

Yes, you can define multiple named slots with different names to allow the parent to insert content in several places inside the child component.

How do you specify a named slot inside a Svelte component?

A <slot name="example"></slot>

B <named-slot>example</named-slot>

C <slot id="example"></slot>

D <slot-example></slot-example>

Named slots use the element with a name attribute to identify the slot.

How does a parent component provide content for a named slot called 'footer'?

A <slot name="footer">Content</slot>

B <footer slot="content">Content</footer>

C <div slot="footer">Content</div>

D <div name="footer">Content</div>

The parent uses the slot attribute with the slot's name on the element wrapping the content.

What is shown if the parent does not provide content for a named slot?

A The fallback content inside the slot element in the child component

B An empty space with no content

C An error message

D The first slot's content

Fallback content inside the named slot is displayed if the parent does not fill it.

Can a Svelte component have multiple named slots?

A Yes, but only two named slots

B No, only one named slot is allowed

C No, slots cannot be named

D Yes, with different names for each slot

Multiple named slots can be defined with unique names to allow flexible content insertion.

Which attribute is used by the parent to target a named slot?

A target

B slot

C id

D name

The parent uses the slot attribute to specify which named slot the content belongs to.

Explain how named slots work in Svelte and how a parent component uses them.

Think about how you give different parts of content to different places inside a component.

Describe a scenario where using multiple named slots in a Svelte component is helpful.

Imagine a card component with different sections.