Error Handling with Try...Catch

This video tutorial covers error handling in JavaScript using try-catch blocks. It explains how to handle different types of errors, such as reference errors, type errors, syntax errors, and URI errors. The tutorial also demonstrates how to extract error messages and types, use the finally block, and create custom errors. By the end, viewers will understand how to manage errors effectively without disrupting the program flow.

What is the primary purpose of a try-catch block in JavaScript?

• To stop the script when an error occurs

• To log errors to the console

• To handle errors without stopping the entire script

• To execute code only if there are no errors

Which property of an error object provides the error message?

• E.error

• E.type

• E.name

• E.message

What does the finally block do in a try-catch statement?

• Executes only if an error is caught

• Prevents the script from stopping

• Executes only if no error is caught

• Executes regardless of whether an error is caught or not

How can you produce a TypeError in JavaScript?

• By passing an invalid URI

• By calling a function on a null value

• By using an undefined variable

• By using incorrect syntax

Which error type is thrown when evaluating a malformed URI component?

• URIError

• ReferenceError

• TypeError

• SyntaxError

What is the purpose of the throw keyword in JavaScript?

• To catch errors

• To define a new error type

• To manually trigger an error

• To log errors to the console

How can you format a custom error message in JavaScript?

• By using the alert function

• By using backticks and template literals

• By using the throw keyword with a string

• By using the console.log function