What does the following JavaScript code snippet do? Code: let num = 5; while (num > 0) { console.log(num); num--; }
A). Declares a variable and assigns a value to it
B). Executes a block of code repeatedly until a condition becomes false
C). Calculates the sum of numbers from 1 to 5
D). Checks if a number is positive or negative
What does the following JavaScript code snippet do? Code: let x = 5; while (x > 0) { console.log(x); x -= 1; }
A). Prints even numbers from 5 to 1
B). Prints odd numbers from 5 to 1
C). Prints numbers from 5 to 0
D). Infinite loop
What will be the output of the following JavaScript code? Code: for (let i = 0; i <= 3; i++) { console.log(i); }
A). 0 1 2 3
B). 0 1 2
C). 1 2 3
D). 1 2 3 4
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)
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 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
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 will be the output of the following JavaScript code? Code: let x = 15; if (x > 10) { console.log('x is greater than 10'); } else { console.log('x is not greater than 10'); }
A). x is greater than 10
B). x is not greater than 10
C). Undefined
D). Error
What will be the output of the following JavaScript code? Code: let i = 1; do { console.log(i); i++; } while (i < 3);
A). 1 2 3
B). 1 2 3 4
C). 2 3 4
D). Infinite loop
What does the following JavaScript code snippet do? Code: let numbers = [1, 2, 3, 4, 5]; let sum = 0; for (let num of numbers) { sum += num; } console.log(sum);
A). Finds the maximum number in the array numbers
B). Calculates the average of numbers in the array numbers
C). Sums all numbers in the array numbers
D). Checks if all numbers in the array numbers are even