Renderless components in Vue - Cheat Sheet & Quick Revision

Recall & Review

beginner

What is a renderless component in Vue?

A renderless component is a Vue component that does not render any HTML itself. Instead, it provides logic and state to its slot content, letting the parent decide how to display it.

beginner

Why use renderless components?

Renderless components separate logic from UI. This makes code reusable and flexible because you can change the look without changing the logic.

intermediate

How do you pass data from a renderless component to its slot content?

You pass data using scoped slots. The renderless component exposes data and methods through slot props, which the parent uses inside the slot template.

intermediate

Show a simple example of a renderless component in Vue 3 using <script setup> and slots.

A renderless component might track a count and expose increment logic without rendering UI. The parent uses the slot to show buttons and text.<br><br><code>&lt;script setup&gt;
import { ref } from 'vue'
const count = ref(0)
function increment() { count.value++ }
&lt;/script&gt;

&lt;template&gt;
  &lt;slot :count="count" :increment="increment" /&gt;
&lt;/template&gt;</code>

beginner

What is the main difference between a renderless component and a regular component?

A regular component controls both logic and UI by rendering HTML. A renderless component only controls logic and state, leaving UI rendering to its parent via slots.

What does a renderless component NOT do?

A Render its own HTML output

B Provide logic and state

C Use scoped slots to share data

D Allow parent to control UI

Renderless components do not render their own HTML. They provide logic and state for the parent to render.

How does a renderless component share data with its parent?

A Through props

B By rendering HTML directly

C By emitting events only

D Using scoped slots

Renderless components use scoped slots to pass data and methods to the parent.

Which Vue feature is essential for renderless components to expose their logic?

A Directives

B Scoped slots

C Mixins

D Filters

Scoped slots allow renderless components to expose data and methods to the parent.

What is a benefit of using renderless components?

A They reduce code reuse

B They tightly couple UI and logic

C They separate logic from UI

D They force fixed UI layouts

Renderless components separate logic from UI, making code more reusable and flexible.

In Vue 3, which syntax is commonly used to create renderless components?

A Composition API with <script setup>

B Options API with data()

C Filters

D Directives

Vue 3's Composition API with