Compound components pattern in Vue - Cheat Sheet & Quick Revision

Recall & Review

beginner

What is the Compound Components Pattern in Vue?

It is a design pattern where a parent component controls the state and logic, while child components handle the UI. They work together to create flexible and reusable components.

intermediate

How do child components communicate with the parent in the Compound Components Pattern?

Child components use Vue's provide/inject or slots to access the parent's state and methods, allowing them to stay in sync without prop drilling.

beginner

Why use the Compound Components Pattern instead of passing props directly?

It keeps the API clean and flexible, avoids passing many props through layers, and allows children to share state easily with the parent.

intermediate

Which Vue feature is commonly used to implement Compound Components?

The <slot> element is used to place child components inside the parent, and provide/inject is used to share state and methods.

beginner

Give an example of a real-life analogy for the Compound Components Pattern.

Think of a TV remote (parent) controlling the TV (children). The remote manages the state (channel, volume), and buttons (children) send commands but don’t hold state themselves.

In Vue's Compound Components Pattern, how do child components usually get access to shared state?

A Using provide/inject or slots

B By emitting events only

C By fetching data from API directly

D By using global variables

Child components use provide/inject or slots to access shared state from the parent, avoiding prop drilling.

What is the main benefit of using Compound Components Pattern?

A It makes components tightly coupled

B It simplifies state sharing and keeps API clean

C It requires more props to be passed

D It avoids using slots

Compound Components Pattern simplifies sharing state and keeps the component API clean and flexible.

Which Vue feature helps place child components inside a parent component's template?

A <slot> element

B v-for directive

C v-if directive

D watch property

The element allows child components to be inserted into the parent's template.

In the Compound Components Pattern, who controls the state?

A Vuex store only

B Child components

C Parent component

D No one controls state

The parent component controls the shared state, while children focus on UI.

Which of these is NOT a typical use case for Compound Components?

A Form controls with shared validation

B Dropdown menus with Menu and MenuItem

C Tabs with TabList and TabPanels

D Isolated components with no shared state

Compound Components are used when components share state; isolated components don’t need this pattern.

Explain how the Compound Components Pattern works in Vue and why it is useful.

Think about how a parent and children share data and responsibilities.

Describe a simple example of a compound component in Vue and how the parts communicate.

Imagine a tabs component with tab buttons and content panels.