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NextJSframework~10 mins

Why layouts avoid redundant rendering in NextJS - Test Your Understanding

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Practice - 5 Tasks
Answer the questions below
1fill in blank
easy

Complete the code to define a layout component that wraps page content.

NextJS
export default function Layout({ children }) {
  return <div [1]>{children}</div>;
}
Drag options to blanks, or click blank then click option'
Akey="layout"
Bstyle={{ padding: '1rem' }}
Cid="main-layout"
DclassName="layout"
Attempts:
3 left
💡 Hint
Common Mistakes
Using inline styles instead of className for layout container
Forgetting to include {children} inside the container
2fill in blank
medium

Complete the code to import the layout component in a Next.js page.

NextJS
import [1] from '../components/Layout';

export default function Page() {
  return <[1]>Hello World</[1]>;
}
Drag options to blanks, or click blank then click option'
ALayout
Blayout
CMainLayout
DPageLayout
Attempts:
3 left
💡 Hint
Common Mistakes
Using lowercase names for components
Mismatching import and usage names
3fill in blank
hard

Fix the error in the layout to avoid redundant rendering by using React Fragment shorthand (<>).

NextJS
export default function Layout({ children }) {
  return [1]{children}[1];
}
Drag options to blanks, or click blank then click option'
A<>
B<section>
C<div>
D<main>
Attempts:
3 left
💡 Hint
Common Mistakes
Wrapping children in extra
or
causing redundant DOM nodes
Not wrapping children at all causing syntax errors
4fill in blank
hard

Fill both blanks to create a layout that uses Next.js <head> and avoids re-rendering the header on page changes.

NextJS
import Head from 'next/head';

export default function Layout({ children }) {
  return (
    <>
      <Head>
        <title>[1]</title>
      </Head>
      <header>[2]</header>
      <main>{children}</main>
    </>
  );
}
Drag options to blanks, or click blank then click option'
AMy App
B<h1>Welcome</h1>
C<h2>Welcome</h2>
DHome
Attempts:
3 left
💡 Hint
Common Mistakes
Putting dynamic content inside causing unnecessary re-renders
Using multiple header tags causing layout issues
5fill in blank
hard

Fill all three blanks to create a layout that uses React context to avoid redundant rendering of user info and theme.

NextJS
import { createContext, useContext } from 'react';

const UserContext = createContext(null);
const ThemeContext = createContext('light');

export default function Layout({ children, user }) {
  return (
    <UserContext.Provider value=[1]>
      <ThemeContext.Provider value=[2]>
        <div className=[3]>
          {children}
        </div>
      </ThemeContext.Provider>
    </UserContext.Provider>
  );
}
Drag options to blanks, or click blank then click option'
Auser
B'dark'
C"theme-dark"
Dnull
Attempts:
3 left
💡 Hint
Common Mistakes
Passing null or wrong values to context providers
Using incorrect className syntax for theme styling