The Modern JavaScript Bootcamp (2019) - JavaScript Modules: Part II

The video tutorial explains the two styles of exports in JavaScript: named and default exports. It covers how to set up and use both types, with a focus on default exports. The tutorial provides guidelines for choosing between the two and introduces an alternative syntax for defining exports. A practical exercise is included to reinforce the concepts learned.

What is a key difference between named and default exports?

• Named exports can only be used once per file.

• Default exports can be renamed during import.

• Named exports must be imported with curly braces.

• Default exports require a specific name during import.

How many default exports can a single JavaScript file have?

• Two

• None

• Only one

• As many as needed

When importing a default export, what is a unique feature?

• It can be imported without curly braces.

• It requires a special import keyword.

• It must be imported with its original name.

• It cannot be renamed.

What is a guiding principle for using default exports?

• Default exports should be avoided.

• Always use default exports for better performance.

• Use default exports for a single main function or class.

• Use default exports for multiple functions.

What is the main advantage of the alternative syntax for defining exports?

• It automatically optimizes the code.

• It allows for multiple default exports.

• It organizes all exports in one place.

• It eliminates the need for import statements.

In the alternative export syntax, how is the default export specified?

• By using a special keyword 'main'.

• By using 'default' before the export name.

• By placing it at the top of the file.

• By using 'as default' after the export name.

What happens if you try to have more than one default export in a file?

• All default exports will be ignored.

• The last default export will override the previous ones.

• The first default export will be used.

• The file will throw an error.