Q
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);

Answer & Solution

Answer: Option C
Solution:
The code snippet calculates the sum of all numbers in the array numbers using a for...of loop. It iterates through each element in the array numbers and adds the current element to the variable sum. After iterating through all elements, it logs the value of sum to the console, which will be the sum of elements 1 + 2 + 3 + 4 + 5 = 15. Therefore, the output of the code is 15.
Related Questions on Average

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

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

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? 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 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 i = 0; for (; i < 3; i++) { console.log(i); }

A). 0 1 2 3

B). 0 1 2

C). 1 2 3

D). 1 2 3 4

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 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 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 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