Computer 9th Chap 3 : Topic 5.1 - Maryam Publications

Computer Chapter 3 : Topic 5.1

Code written outside of a function is hard to test

1 / 8

A student writes JavaScript code where variables and logic are written directly in the script outside any function. Why is this approach considered difficult for debugging?

A) It runs faster in browsers

B) It is harder to isolate and test specific parts of code

C) It cannot store variables

D) It automatically creates errors in all cases

2 / 8

A programmer is debugging a JavaScript program and wants to test a specific block of code repeatedly. What is the best practice for making this easier?

A) Write all code in a single global script

B) Remove all variables

C) Avoid using loops

D) Use functions to isolate the code block

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What is the main disadvantage of writing JavaScript code outside functions when trying to locate errors?

A) It increases browser speed

B) It prevents use of arrays

C) It mixes all logic in a single global scope

D) It makes code automatically secure

4 / 8

A student is unable to find where a bug occurs in a long JavaScript file. Which debugging strategy would be most effective?

A) Removing all loops

B) Using only alerts in the entire program

C) Adding more global variables

D) Converting code into smaller functions and testing each one

5 / 8

Which coding practice improves debugging by allowing individual testing of features in JavaScript programs?

A) Writing everything in one large script

B) Using functions for each logical task

C) Avoiding indentation

D) Using only console logs

6 / 8

A programmer uses console.log() statements during development. What is the primary purpose of this debugging technique?

A) To permanently store data

B) To create user interfaces

C) To display values and track program flow

D) To speed up execution

7 / 8

Why is it recommended to avoid writing all JavaScript logic directly in the global scope?

A) It prevents browser execution

B) It automatically encrypts the code

C) It makes debugging and maintenance more difficult

D) It improves code styling only

8 / 8

During debugging, a student wraps a problematic code section inside a function and tests it separately. What concept is being applied?

A) Encapsulation for easier testing

B) Random execution

C) Event blocking

D) Code deletion strategy

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