JavaScript - Operators : Arithmetic, Relational, Logical and Ternary

Question 1

What are JavaScript operators?

Answer 1

Symbols that perform operations on values and variables.

Question 2

What are the three main types of JavaScript operators?

Answer 2

• Arithmetic Operators
• Relational Operators
• Logical Operators

Question 3

What is the purpose of Arithmetic Operators?

Answer 3

Used for mathematical operations/calculations.

Question 4

What does the Addition operator (+) do in JavaScript?

Answer 4

Performs addition of two values.

Question 5

What is the result of the operation 5 + 3?

Answer 5

8

Question 6

What does the Subtraction operator (-) do in JavaScript?

Answer 6

Performs subtraction of two values.

Question 7

What is the result of the operation 10 - 4?

Answer 7

6

Question 8

What does the Multiplication operator (*) do in JavaScript?

Answer 8

Performs multiplication of two values.

Question 9

What is the result of the operation 6 * 2?

Answer 9

12

Question 10

What does the Division operator (/) do in JavaScript?

Answer 10

Performs division of two values.

Question 11

What is the result of the operation 15 / 3?

Answer 11

5

Question 12

What does the Modulus operator (%) do in JavaScript?

Answer 12

Returns the remainder of a division operation.

Question 13

What is the result of the operation 17 % 5?

Answer 13

2

Question 14

What are Relational Operators used for?

Answer 14

Used to compare values, returning either true or false.

Question 15

What does the Greater than operator (>) check?

Answer 15

Checks if the left value is greater than the right value.

Question 16

What is the result of the operation 5 > 3?

Answer 16

true

Question 17

What does the Less than operator (<) check?

Answer 17

Checks if the left value is less than the right value.

Question 18

What is the result of the operation 2 < 1?

Answer 18

false

Question 19

What does the Equal to operator (==) check?

Answer 19

Checks if two values are equal.

Question 20

What is the result of the operation 4 == 4?

Answer 20

true

Question 21

What does the Not equal to operator (!=) check?

Answer 21

Checks if two values are not equal.

Question 22

What is the result of the operation 5 != 3?

Answer 22

true

Question 23

What are Logical Operators used for?

Answer 23

Used to combine or modify conditions.

Question 24

What does the AND operator (&&) return?

Answer 24

true if both conditions are true.

Question 25

What does the OR operator (||) return?

Answer 25

true if at least one condition is true.

Question 26

What does the NOT operator (!) do?

Answer 26

Reverses the boolean value.

Question 27

Fill in the blank: The operator that returns the remainder of a division operation is called the _______.

Answer 27

Modulus operator

Question 28

Why are ternary operators used?

Answer 28

They are one liners of code and are quite useful for quick and simple decisions.

Question 29

What is the Syntax (code outline) for Ternary Operators?

Answer 29

condition ? expressionIfTrue : expressionIfFalse

Question 30

What is an example of code (in Javascript) for Ternary Operators?

Answer 30

let canDrive = age >= 16 ? "Yes" : "No";