JavaScript Expressions Mocktest

Question - 14

11.

Which operator is used for decrementing a value in JavaScript?

A). ++ B). -- C). += D). -=

Answer & Solution Discuss in Board

Answer & Solution

Answer: Option B

Solution:

The decrement operator (--) decreases a value by 1.

12.

What will be the value of '10 % 3' in JavaScript?

A). 1 B). 2 C). 3 D). 0

Answer & Solution Discuss in Board

Answer: Option B

Solution:

The modulo operator (%) returns the remainder of the division, which is 10 % 3 = 1.

13.

Which of the following is a function expression in JavaScript?

A). let x = 5; B). function add(a, b) { return a + b; } C). let y = 'Hello'; D). const PI = 3.14;

Answer & Solution Discuss in Board

Answer: Option B

Solution:

The function add(a, b) { return a + b; } represents a function expression.

14.

What is the value of the expression '10 ** 2' in JavaScript?

A). 20 B). 100 C). 200 D). 50

Answer & Solution Discuss in Board

Answer: Option B

Solution:

The exponentiation operator (**) raises the base to the power of the exponent, resulting in 10 ** 2 = 100.