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 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
What is the purpose of the following JavaScript statement? break;
A). Assigns a value to a variable
B). Exits the current loop or switch statement
C). Skips the current iteration in a loop
D). Continues to the next iteration in a 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 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 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 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
What will be the output of the following JavaScript code? Code: let i = 3; do { console.log(i); i--; } while (i > 0);
A). 3 2 1
B). 2 1 0
C). 3 2 1 0
D). 1 2 3
What will be the output of the following JavaScript code? Code: let nums = [1, 2, 3, 4, 5]; for (let n of nums) { if (n % 2 === 0) { console.log(n); } }
A). 1 3 5
B). 2 4 6
C). 1 2 3 4 5
D). 2 4
What does the following JavaScript code snippet do? Code: let result = x > 0 ? 'Positive' : (x < 0 ? 'Negative' : 'Zero');
A). Assigns 'Positive' to result if x is greater than 0, 'Negative' if x is less than 0, otherwise 'Zero'
B). Checks if x is greater than 0 and assigns 'Positive', otherwise checks if x is less than 0 and assigns 'Negative', otherwise assigns 'Zero'
C). Assigns 'Positive' to result if x is less than 0, 'Negative' if x is greater than 0, otherwise 'Zero'
D). None of the above