Error Handling and Debugging (original) (raw)

What is the purpose of the try...catch block in JavaScript?

• To handle asynchronous code
• To handle errors during code execution
• To stop the execution of a program
• To skip specific lines of code

Which statement is used to manually throw an error in JavaScript?

What is the Error object used for?

• To create custom error messages
• To debug code by printing logs
• To represent runtime errors in JavaScript

What is the output of the following code?

JavaScript `

try { console.log(a); } catch (e) { console.log(e.message); }

`

• ReferenceError: a is not defined

Which console method is used to display a table of data?

What happens if there is no catch block for a thrown error?

• The program continues execution
• The program crashes or stops execution
• A warning is displayed in the console

Which of the following methods halts the browser's execution to inspect the code?

What is the purpose of the finally block in error handling?

• Executes only if an error occurs
• Executes only if no error occurs
• Executes after the try and catch blocks, regardless of errors
• Stops the error from propagating further

Which of the following is NOT a console method?

What is the primary advantage of using a linter like ESLint in debugging?

• Automatically fixes all errors in code
• Highlights potential errors and enforces coding standards
• Pauses execution of the code
• Provides runtime debugging tools

There are 10 questions to complete.

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