Error Handling and Debugging

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    Question 1

    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

    Question 2

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

    • throw

    • raise

    • error

    • reject

    Question 3

    What is the Error object used for?

    • To create custom error messages

    • To debug code by printing logs

    • To represent runtime errors in JavaScript

    • To pause code execution

    Question 4

    What is the output of the following code?

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


    • a is not defined

    • ReferenceError: a is not defined

    • Undefined

    • Throws no error

    Question 5

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

    • console.log()

    • console.error()

    • console.data()

    • console.table()

    Question 6

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

    • The program continues execution

    • The error is ignored

    • The program crashes or stops execution

    • A warning is displayed in the console

    Question 7

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

    • debugger

    • console.stop()

    • break()

    • console.inspect()

    Question 8

    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

    Question 9

    Which of the following is NOT a console method?

    • console.time()

    • console.warn()

    • console.info()

    • console.alert()

    Question 10

    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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