Adding a Note

This video tutorial guides viewers through setting up a notes application using JavaScript. It covers defining and exporting functions, handling data storage with JSON files, implementing error handling, and preventing duplicate entries. The tutorial emphasizes practical coding techniques and prepares viewers for a challenge in the next video.

What is the primary purpose of the 'add note' function in the notes app?

• To update note titles

• To delete existing notes

• To list all notes

• To add a new note with a title and body

How are multiple functions exported from a module in this project?

• By using a single function

• By exporting each function individually

• By using a global variable

• By setting module.exports to an object with properties

What is the purpose of the try-catch block in the notes app?

• To export functions

• To add new notes

• To handle errors when reading from a non-existent file

• To loop through all notes

Which method is used to convert a buffer into a string in the notes app?

• File.read

• Buffer.toString

• JSON.stringify

• Array.push

What is the initial state of the notes array if the notes file does not exist?

• It contains a single empty object

• It is an empty array

• It is null

• It contains default notes

What is the purpose of the 'load notes' function?

• To save notes to a file

• To delete notes

• To load and parse existing notes from a file

• To update note titles

What is the role of the 'save notes' function in the application?

• To delete notes

• To update note titles

• To read notes from the file

• To save the notes array to a file

Which method is used to add a new note to the notes array?

• Array.unshift

• Array.shift

• Array.pop

• Array.push

How does the application ensure that notes are not duplicated?

• By checking the length of the notes array

• By using the array filter method to find duplicates

• By sorting the notes

• By using a global variable

What happens if a note with a duplicate title is added?

• The note is added anyway

• The application crashes

• The note is not added and a message is logged

• The existing note is overwritten