JavaScript Masterclass - Zero to Job-Ready with Hands-On Projects - Exceptions / 202

The lecture explains the difference between errors and exceptions, emphasizing that errors occur unintentionally, while exceptions are raised when specific conditions are not met. It provides examples of handling exceptions using user input and demonstrates how to create custom errors with the 'throw' keyword. The lecture also covers handling multiple conditions and different error types, concluding with advice on using try-catch blocks for exception handling.

What is the main difference between an error and an exception?

• Errors and exceptions are the same.

• Errors occur unintentionally, exceptions are raised when conditions are not met.

• Errors are intentional, exceptions are unintentional.

• Exceptions occur unintentionally, errors are raised when conditions are not met.

In the example provided, what type of input is being checked?

• String

• Boolean

• Array

• Integer

What keyword is used to raise a custom error?

• catch

• try

• throw

• raise

What is the purpose of using the 'throw' keyword?

• To log messages

• To ignore errors

• To raise custom exceptions

• To catch errors

Which block is used to handle exceptions in code?

• try-catch

• if-else

• for-loop

• while-loop

What type of error is raised when a condition is not met in the example?

• Type error

• Reference error

• Syntax error

• Custom error

Why is it important to understand different error types?

• To create more errors

• To avoid using try-catch blocks

• To ignore them

• To handle them appropriately