What does the unary operator + do to a string in JavaScript?

What will be the value of x after executing the code: let x = 10; x -= 2; x *= 3;?

A). 24

B). 30

C). 36

D). 12

What is the result of '20' - 10 in JavaScript?

A). 10

B). '10'

C). NaN

D). 20

What is the value of x after executing the code: let x = 5; x *= 2 + 3;?

A). 10

B). 25

C). 13

D). 15

What will be the output of 20 / '5' in JavaScript?

A). 4

B). NaN

C). Infinity

D). Error

What will be the output of 10 + '2' - 1 in JavaScript?

A). '101'

B). '10'

C). NaN

D). Error

What will be the result of 10 + '5' in JavaScript?

A). 15

B). 105

C). NaN

D). Error

What does the operator === do in JavaScript?

A). Checks for equality without type conversion

B). Assigns a value

C). Performs a strict comparison

D). Concatenates strings

What will be the output of '5' + 2 - 1 in JavaScript?

A). '52'

B). 6

C). '4'

D). Error

What does the typeof operator return for an array in JavaScript?

A). 'array'

B). 'object'

C). 'null'

D). 'undefined'

What does the operator

A).

B). do in JavaScript?

C). Logical AND

D). Logical OR