JavaScript Operators: Interactive Learning Quizzes for Full-Stack Web Development

Question 1

Which of the following is NOT a JavaScript operator type?

Accepted Answer

Conditional

Answer

Arithmetic

Answer

Comparison

Answer

Logical

Question 2

Which operator is used to compare two values for strict equality?

Accepted Answer

===

Answer

==

Answer

!==

Answer

=

Question 3

What is the result of the following expression: true && !false?

Accepted Answer

true

Answer

false

Answer

undefined

Answer

null

Question 4

Which operator is used to assign a value to a variable in JavaScript?

Accepted Answer

=

Answer

:

Answer

:=

Answer

=>

Question 5

Which of the following is an example of an arithmetic operator?

Accepted Answer

+

Answer

&&

Answer

===

Answer

!

Question 6

Which operator is used to increment a variable's value by 1?

Accepted Answer

++

Answer

--

Answer

+

Answer

-

Question 7

What is the result of the following expression: 2 ** 3?

Accepted Answer

8

Answer

5

Answer

6

Answer

9

Question 8

Which JavaScript operator is used to compare two values for strict equality?

Accepted Answer

===

Answer

<>

Answer

!==

Answer

==

Question 9

What is the output of the following JavaScript code: let x = 10; x++?

Accepted Answer

11

Answer

9

Answer

10

Answer

12

Question 10

Identify the logical operator in JavaScript from the following options:

Accepted Answer

&&

Answer

%

Answer

/

Answer

+

Question 11

Calculate the result of the following JavaScript expression: 10 % 3?

Accepted Answer

1

Answer

10

Answer

3

Answer

0

Question 12

Which of the following is NOT a bitwise operator in JavaScript?

Accepted Answer

+

Answer

&

Answer

~

Answer

|

Question 13

Describe the purpose of the ternary operator (?:) in JavaScript.

Accepted Answer

To evaluate a conditional expression and return one of two values based on the result.

Answer

To perform arithmetic operations.

Answer

To compare two values for equality.

Question 14

Which of the following represents the correct syntax for a JavaScript switch statement?

Accepted Answer

switch (expression) { case value1: ... }

Answer

switch (expression) {} case value1: ...

Answer

switch expression { case value1: ... }

Answer

switch { expression case value1: ... }

Question 15

What is the primary purpose of the typeof operator in JavaScript?

Accepted Answer

To determine and return the type of a variable.

Answer

To perform arithmetic operations.

Answer

To compare two values for equality.

Answer

To convert a variable to a different type.

Question 16

Which operator is used to assign a value to a variable in JavaScript?

Accepted Answer

=

Answer

&&

Answer

+

Answer

%

Question 17

Which operator is used to test for strict equality (value and type) between two values in JavaScript?

Accepted Answer

===

Answer

==

Answer

>

Answer

!=

Question 18

Which operator is used to add two numbers together in JavaScript?

Accepted Answer

+

Answer

/

Answer

-

Answer

*

Question 19

Which operator is used to join two strings together (concatenate) in JavaScript?

Accepted Answer

+

Answer

*

Answer

/

Question 20

Which operator is used to perform a logical AND operation on two boolean values in JavaScript?

Accepted Answer

&&

Answer

||

Answer

!

Answer

^

Question 21

Which operator is used to negate a boolean value in JavaScript?

Accepted Answer

!

Answer

^

Answer

&&

Answer

||

Question 22

Which operator is used to calculate the remainder of dividing one number by another in JavaScript?

Accepted Answer

%

Answer

*

Answer

+

Answer

-

Question 23

Which operator is used to increment a variable by 1 in JavaScript?

Accepted Answer

++

Answer

--

Answer

-=

Answer

+=

Question 24

Which operator is used to perform a bitwise OR operation on two numbers in JavaScript?

Accepted Answer

|

Answer

~

Answer

^

Answer

&

Question 25

Which operator is used to calculate the result of raising one number to the power of another in JavaScript?

Accepted Answer

**

Answer

/

Answer

%

Answer

+

Question 26

Which operator is used to assign a value to a variable, creating binding between a variable name and a value?

Accepted Answer

=

Answer

/

Answer

+

Answer

%

Question 27

Which operator is used to perform the arithmetic operation of addition?

Accepted Answer

+

Answer

*

Answer

-

Answer

/

Question 28

Which operator is used to compare equality, checking whether two values are equal?

Accepted Answer

==

Answer

!=

Answer

>

Answer

<

Question 29

Which operator is used to perform the logical AND operation, returning true if both operands are true and false otherwise?

Accepted Answer

&&

Answer

!

Answer

||

Answer

^

Question 30

Which operator is used to perform the modulus operation, returning the remainder when one operand is divided by the other?

Accepted Answer

%

Answer

+

Answer

*

Question 31

Which operator is used to increment the value of a variable by 1?

Accepted Answer

++

Answer

--

Answer

-=

Answer

+=

Question 32

Which operator is used to concatenate two strings, joining them together?

Accepted Answer

+

Answer

/

Answer

*

Answer

%

Question 33

Which operator is used to negate a boolean value, reversing its truthiness?

Accepted Answer

!

Answer

^

Answer

||

Answer

&&

Question 34

Which operator is used to perform the bitwise XOR operation, performing logical exclusive OR on the bits of the operands?

Accepted Answer

^

Answer

|

Answer

~

Answer

&

Question 35

Which operator is used to perform the ternary conditional operation, evaluating a condition and returning a different value based on its truthiness?

Accepted Answer

?

Answer

||

Answer

:

Answer

&&

Question 36

Which operator is used to join two strings together in JavaScript?

Accepted Answer

+

Answer

*

Answer

-

Answer

/

Question 37

Which operator is used to check if a value is not equal to another value in JavaScript?

Accepted Answer

!==

Answer

>

Answer

<

Answer

==

Question 38

Which operator is used to check if a value is greater than another value in JavaScript?

Accepted Answer

>

Answer

<

Answer

<=

Answer

>=

Question 39

Which operator is used to check if a value is less than another value in JavaScript?

Accepted Answer

<

Answer

>

Answer

<=

Answer

>=

Question 40

Which operator is used to check if a value is greater than or equal to another value in JavaScript?

Accepted Answer

>=

Answer

>

Answer

<

Answer

<=

Question 41

Which operator is used to check if a value is less than or equal to another value in JavaScript?

Accepted Answer

<=

Answer

>

Answer

>=

Answer

<

Question 42

Which operator is used to check if a value is true or false in JavaScript?

Accepted Answer

!

Answer

&&

Answer

?

Answer

||

Question 43

Identify the comparison operator that returns `true` if the left operand is not equal to the right operand:

Accepted Answer

!=

Answer

==

Answer

<

Answer

>

Question 44

Which logical operator in JavaScript evaluates to `true` only when both operands are `true`?

Accepted Answer

&&

Answer

!

Answer

||

Answer

?

Question 45

Calculate the result of the following JavaScript expression: `5 ** 2`

Accepted Answer

25

Answer

15

Answer

10

Answer

30

Question 46

Which operator in JavaScript is used for bitwise OR operations?

Accepted Answer

|

Answer

^

Answer

&

Answer

~

Question 47

What is the primary purpose of the ternary operator in JavaScript?

Accepted Answer

To conditionally assign a value to a variable

Answer

To declare a function

Answer

To perform arithmetic operations

Answer

To compare two values

Question 48

Evaluate the result of the following JavaScript expression: `typeof null`?

Accepted Answer

object

Answer

null

Answer

undefined

Question 49

What is the result of the expression: `10 % 3`?

Accepted Answer

1

Answer

3

Answer

10

Question 50

Which operator is used to check for strict equality in JavaScript?

Accepted Answer

===

Answer

=

Answer

!=

Answer

==

Question 51

What is the result of the expression `true || false`?

Accepted Answer

true

Answer

undefined

Answer

false

Question 52

Which operator is used to assign a value to a variable?

Accepted Answer

=

Answer

===

Answer

!=

Question 53

What will the following code snippet output: `console.log(5 + '5')`?

Accepted Answer

55

Answer

10

Answer

Error

Question 54

Which operator is used to increment a variable by 1?

Accepted Answer

++

Answer

=

Answer

+

Question 55

What is the result of the expression `!true`?

Accepted Answer

false

Answer

undefined

Answer

true

Question 56

Which of the following is NOT a valid JavaScript operator?

Accepted Answer

%=

Answer

-=

Answer

*=

Question 57

What is the result of the expression `'Hello' === 'hello'`?

Accepted Answer

false

Answer

undefined

Answer

true

Question 58

Which operator is used to determine if a value is less than another value?

Accepted Answer

<

Answer

>

Answer

==

Answer

!=