Bird
Raised Fist0
NextJSframework~5 mins

Create Next App setup in NextJS - Cheat Sheet & Quick Revision

Choose your learning style10 modes available
LearnWhyDeepVisualTryChallengeProjectRecallPerf
Recall & Review
beginner
What command do you use to create a new Next.js app with the latest setup?
You use npx create-next-app@latest to create a new Next.js app with the latest recommended setup.
Click to reveal answer
beginner
What does the npx command do when creating a Next.js app?
npx runs a package without installing it globally. It downloads and runs create-next-app to set up your project quickly.
Click to reveal answer
beginner
What folder structure does Next.js create by default when you run create-next-app?
It creates folders like app or pages for routes, public for static files, and styles for CSS.
Click to reveal answer
intermediate
Why is it important to use the latest version of create-next-app?
The latest version includes new features, best practices, and the newest Next.js version for better performance and developer experience.
Click to reveal answer
beginner
What is the default port Next.js uses when you run npm run dev after setup?
Next.js runs the development server on http://localhost:3000 by default.
Click to reveal answer
Which command starts a new Next.js project with the latest setup?
Anpx create-next-app@latest
Bnpm install next-app
Cnext new app
Dnpm create next
What folder contains static files like images in a Next.js app created by create-next-app?
Acomponents
Bpublic
Cpages
Dstyles
After setup, which command runs the Next.js development server?
Anpm start
Bnpm run build
Cnpm run dev
Dnext dev
What port does Next.js use by default for the development server?
A8080
B4000
C5000
D3000
Why should you use npx create-next-app@latest instead of an older version?
ATo get the newest features and best setup
BBecause older versions are faster
CTo avoid installing Node.js
DBecause it uses less disk space
Explain the steps to create a new Next.js app using the recommended setup.
Think about the command and what happens after.
You got /4 concepts.
    Describe the folder structure created by Next.js after running create-next-app and what each folder is for.
    Focus on main folders and their roles.
    You got /4 concepts.

      Practice

      (1/5)
      1. What does the command npx create-next-app@latest do when setting up a Next.js project?
      easy
      A. It creates a new Next.js project with default settings and dependencies installed.
      B. It updates an existing Next.js project to the latest version.
      C. It runs the Next.js development server immediately.
      D. It installs only React without Next.js features.

      Solution

      1. Step 1: Understand the purpose of npx create-next-app@latest

        This command scaffolds a new Next.js project with all necessary files and dependencies.

      2. Step 2: Differentiate from other commands

        It does not update or run servers; it only creates a fresh project setup.

      3. Final Answer:

        It creates a new Next.js project with default settings and dependencies installed. -> Option A

      4. Quick Check:

        Project creation = A [OK]
      Hint: Remember: create-next-app sets up a new project [OK]
      Common Mistakes:
      • Confusing create-next-app with update commands
      • Thinking it runs the server automatically
      • Assuming it installs only React
      2. Which of the following is the correct command to start the Next.js development server after creating the app?
      easy
      A. npm start
      B. npm run dev
      C. next dev
      D. node server.js

      Solution

      1. Step 1: Identify the standard Next.js development command

        After setup, npm run dev starts the development server with hot reload.

      2. Step 2: Compare with other commands

        npm start is usually for production, next dev is a lower-level command but not standard npm script, and node server.js is unrelated here.

      3. Final Answer:

        npm run dev -> Option B

      4. Quick Check:

        Dev server start = A [OK]
      Hint: Use npm run dev to start Next.js dev server [OK]
      Common Mistakes:
      • Using npm start instead of npm run dev
      • Trying to run node server.js without setup
      • Confusing next dev with npm scripts
      3. After running npx create-next-app@latest my-app and then cd my-app followed by npm run dev, what will you see when you open http://localhost:3000 in your browser?
      medium
      A. A blank white page with no content.
      B. A list of files in the project directory.
      C. An error message saying the server is not running.
      D. A Next.js welcome page with links to documentation and examples.

      Solution

      1. Step 1: Understand default Next.js app behavior

        The default Next.js app shows a welcome page with helpful links after setup and running dev server.

      2. Step 2: Eliminate other options

        Blank page means no content, error means server not running, and file list is not default behavior.

      3. Final Answer:

        A Next.js welcome page with links to documentation and examples. -> Option D

      4. Quick Check:

        Default page = B [OK]
      Hint: Default Next.js app shows welcome page on localhost:3000 [OK]
      Common Mistakes:
      • Expecting a blank page instead of welcome content
      • Assuming server is not running after npm run dev
      • Thinking file list is shown by default
      4. You ran npx create-next-app@latest but when you try npm run dev, you get an error: command not found: next. What is the likely cause?
      medium
      A. You ran npm run dev outside the project folder.
      B. You need to restart your computer after installation.
      C. You forgot to install Node.js on your system.
      D. Your internet connection is down.

      Solution

      1. Step 1: Analyze the error message

        The error command not found: next usually means the Next.js binary is not found in current folder's node_modules.

      2. Step 2: Check common causes

        This happens if you run npm run dev outside the project directory where dependencies are installed.

      3. Final Answer:

        You ran npm run dev outside the project folder. -> Option A

      4. Quick Check:

        Run commands inside project folder = C [OK]
      Hint: Always run npm scripts inside your project folder [OK]
      Common Mistakes:
      • Assuming Node.js is not installed when it is
      • Restarting computer unnecessarily
      • Blaming internet connection for local command errors
      5. You want to create a new Next.js app named blog but also want to use TypeScript from the start. Which command should you run?
      hard
      A. npx create-next-app@latest blog --use-typescript
      B. npx create-next-app@latest blog -ts
      C. npx create-next-app@latest blog --typescript
      D. npx create-next-app@latest blog --ts

      Solution

      1. Step 1: Recall official flag for TypeScript setup

        The official flag to create a Next.js app with TypeScript is --typescript.

      2. Step 2: Verify other options

        Short flags like -ts or --ts are not recognized, and --use-typescript is invalid.

      3. Final Answer:

        npx create-next-app@latest blog --typescript -> Option C

      4. Quick Check:

        Use --typescript flag = D [OK]
      Hint: Use --typescript flag to create TS Next.js app [OK]
      Common Mistakes:
      • Using incorrect or shorthand flags
      • Assuming TypeScript is default without flag
      • Trying unsupported flag names
      Recommended

      Ready to prove it?

      Pass the test and this pattern moves unknown strong while earning +1 Grip toward your certificate.

      10 questions~5 mineasy hard