Q
What does the following JavaScript code snippet do? Code: let num = 5; while (num > 0) { console.log(num); num--; }

Answer & Solution

Answer: Option B
Solution:
The code snippet uses a while loop to execute a block of code repeatedly until the condition num > 0 becomes false. It starts with num being 5 and prints the value of num to the console in each iteration, then decrements num by 1. This process continues until num becomes 0, at which point the loop stops. Therefore, the output will be: 5 4 3 2 1
Related Questions on Average

What is the purpose of the following JavaScript statement? return result;

A). Exits the current loop or switch statement

B). Skips the current iteration in a loop

C). Exits the current function and returns a value

D). Continues to the next iteration in a loop

What does the following JavaScript code snippet do? Code: let numbers = [1, 2, 3, 4, 5]; for (let i = 0; i < numbers.length; i++) { console.log(numbers[i]); }

A). Prints all elements of the array numbers

B). Calculates the sum of elements in the array numbers

C). Finds the maximum element in the array numbers

D). Checks if all elements in the array numbers are even

What is the purpose of the following JavaScript statement? let name = 'John';

A). Declare a function

B). Declare a variable

C). Print a message to the console

D). Loop through an array

What will be the output of the following JavaScript code? Code: let x = 7; if (x % 2 === 0) { console.log('Even'); } else { console.log('Odd'); }

A). Even

B). Odd

C). 7

D). None of the above

What is the purpose of the following JavaScript statement? continue;

A). Exits the current loop or switch statement

B). Skips the current iteration in a loop

C). Assigns a value to a variable

D). Continues to the next iteration in a loop

Which of the following JavaScript statements is used to execute a block of code repeatedly until a specified condition becomes false?

A). Function declaration statement

B). Conditional statement (if statement)

C). Assignment statement

D). Looping statement (do-while loop)

Which of the following JavaScript statements is used to execute a block of code repeatedly while a condition remains true?

A). Function invocation statement

B). Conditional statement (if statement)

C). Assignment statement

D). Looping statement (while loop)

Which of the following JavaScript statements is used to execute different code based on a specified condition?

A). Function declaration statement

B). Assignment statement

C). Conditional statement (if statement)

D). Looping statement (for loop)

What is the purpose of the following JavaScript statement? continue;

A). Exits the current loop or switch statement

B). Skips the current iteration in a loop

C). Assigns a value to a variable

D). Continues to the next iteration in a loop

What will be the output of the following JavaScript code? Code: let x = 10; while (x > 0) { console.log(x); x -= 2; }

A). 10 8 6 4 2 0

B). 10 8 6 4 2

C). 8 6 4 2 0

D). 9 7 5 3 1 -1