Javascript - Installation

1. What is Node.js, and why might a developer choose to install it?

Node.js is a JavaScript framework for front-end development.

Node.js is a runtime that allows JavaScript to be executed on the server side, and developers might install it for server-side scripting.

Node.js is a code editor used for writing JavaScript.

Node.js is an alternative to JavaScript for building web applications.

Difficulty

1800

low

2. Which package manager is commonly used with Node.js for installing and managing JavaScript libraries?

npm (Node Package Manager)

yarn

pip

composer

Difficulty

1600

low

3. What is the purpose of a linter in JavaScript development?

To execute JavaScript code

To manage project dependencies

To enforce coding standards and identify errors

To create user interfaces

Difficulty

2400

medium

4. How can you check if Node.js is installed on your machine from the command line?

node --version

check node

npm install node

node check

Difficulty

2600

medium

5. Which command is used to initialize a new Node.js project and create a package.json file?

npm init

node init

init project

create npm

Difficulty

2000

low

6. What is the purpose of the "package.json" file in a Node.js project?

To store user preferences for the project

To list project dependencies and configuration

To define the HTML structure of the project

To manage server-side scripts

Difficulty

3200

high

7. Which tool is commonly used for version control in JavaScript projects?

Git

Subversion

Mercurial

CVS

Difficulty

2200

medium

8. How can you install a JavaScript library globally using npm?

npm install -g library-name

npm add -g library-name

npm global install library-name

npm library-name -g

Difficulty

2600

medium

9. What is the purpose of using a package manager like npm or yarn in JavaScript development?

To write code

To debug code

To manage project dependencies and install third-party libraries

To design user interfaces

Difficulty

2500

medium

10. Which tool can be used for bundling and optimizing JavaScript code for production?

Babel

ESLint

Webpack

Gulp

Difficulty

2700

medium

11. What is Babel used for in JavaScript development?

To manage project dependencies

To bundle and optimize code

To transpile modern JavaScript code into an older version for compatibility

To create a development server

Difficulty

2900

medium

12. How can you install a specific version of a package using npm?

npm install package-name

npm install package-name@version

npm install -v package-name

npm add package-name@version

Difficulty

3000

medium

13. Which command is used to start a development server with live reloading in a Node.js project?

npm live

npm start

node server

npm dev

Difficulty

3200

high

14. What is the purpose of ESLint in JavaScript development?

To manage project dependencies

To transpile code

To enforce coding standards and identify errors

To bundle and optimize code

Difficulty

3500

high

15. Which tool is commonly used for task automation in JavaScript projects?

Babel

ESLint

Webpack

Gulp

Difficulty

2900

medium

16. What is the role of a transpiler in JavaScript development?

To optimize code for production

To bundle multiple JavaScript files into a single file

To convert code from one version of JavaScript to another

To enforce coding standards

Difficulty

2800

medium

17. Which command is used to install dependencies listed in the "package.json" file?

npm install

npm update

npm add

npm dependencies

Difficulty

3600

high

18. What is the purpose of the ".gitignore" file in a JavaScript project?

To list project dependencies

To configure the development server

To specify files and directories that should be ignored by version control

To store user preferences for the project

Difficulty

3500

high

19. How can you globally uninstall a package installed with npm?

npm remove -g package-name

npm uninstall package-name -g

npm global uninstall package-name

npm delete -g package-name

Difficulty

3300

high

20. Which tool is commonly used for code formatting in JavaScript development?

Babel

Prettier

ESLint

Webpack

Difficulty

3700

high

Installation

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Question Bank

1. What is Node.js, and why might a developer choose to install it?

2. Which package manager is commonly used with Node.js for installing and managing JavaScript libraries?

3. What is the purpose of a linter in JavaScript development?

4. How can you check if Node.js is installed on your machine from the command line?

5. Which command is used to initialize a new Node.js project and create a package.json file?

6. What is the purpose of the "package.json" file in a Node.js project?

7. Which tool is commonly used for version control in JavaScript projects?

8. How can you install a JavaScript library globally using npm?

9. What is the purpose of using a package manager like npm or yarn in JavaScript development?

10. Which tool can be used for bundling and optimizing JavaScript code for production?

11. What is Babel used for in JavaScript development?

12. How can you install a specific version of a package using npm?

13. Which command is used to start a development server with live reloading in a Node.js project?

14. What is the purpose of ESLint in JavaScript development?

15. Which tool is commonly used for task automation in JavaScript projects?

16. What is the role of a transpiler in JavaScript development?

17. Which command is used to install dependencies listed in the "package.json" file?

18. What is the purpose of the ".gitignore" file in a JavaScript project?

19. How can you globally uninstall a package installed with npm?

20. Which tool is commonly used for code formatting in JavaScript development?

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