Importing npm Modules -2

This video tutorial teaches how to use the require function in Node.js to load modules and files. It explains the importance of organizing code into multiple files for better management and maintainability. The tutorial covers how to require and execute additional files, export and import variables, and export and use functions across files. A challenge is provided to reinforce the concepts by creating and using a function in a new file.

Why is it important to use multiple files in a Node.js application?

• To avoid using the require function

• To make the application run faster

• To reduce the size of the application

• To keep the code organized and maintainable

What is the purpose of the utils.js file in the example?

• To store configuration settings

• To contain useful utilities for the application

• To serve as the main entry point of the application

• To handle database connections

What happens when you require a file in Node.js?

• The file is ignored

• The file is deleted

• The file is executed

• The file is copied into the main file

Why can't app.js access variables from utils.js directly?

• Because utils.js is not required

• Because each file has its own scope

• Because utils.js is not a JavaScript file

• Because app.js is not a module

How can you share variables between files in Node.js?

• By using the import statement

• By using global variables

• By using the console.log function

• By using module.exports

What is the return value of a require call?

• The file path

• The file size

• The file name

• The exported content of the required file

What is the purpose of the add function in the example?

• To multiply two numbers

• To subtract two numbers

• To add two numbers

• To divide two numbers

What should you do to export a function from a file?

• Use console.log

• Use module.exports

• Use the return statement

• Use the import statement

What is the first step in the challenge to create a new function?

• Delete the app.js file

• Create a new folder

• Create a new file called notes.js

• Write a complex function

What should the getNotes function return in the challenge?

• A number

• An error message

• A static string like 'your notes...'

• A list of notes