Q
Which keyword is used to determine the type of a variable or an expression?

Answer & Solution

Answer: Option A
Solution:
The 'typeof' keyword is used to determine the type of a variable or an expression.
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Which keyword is used to declare variables in JavaScript?

A). var

B). let

C). const

D). variable

What is the purpose of the 'if' keyword in JavaScript?

A). To perform conditional execution

B). To declare functions

C). To create loops

D). To skip iterations in a loop

Which keyword is used to skip the current iteration in a loop?

A). continue

B). break

C). return

D). exit

What does the 'break' keyword do in JavaScript?

A). Exits a loop or switch statement

B). Continues to the next iteration in a loop

C). Returns a value from a function

D). Skips the current iteration in a loop

Which keyword is used to declare constants in JavaScript?

A). const

B). let

C). var

D). constant

Which keyword is used to create an instance of an array in JavaScript?

A). new

B). instanceof

C). this

D). create

What does the 'return' keyword do in JavaScript?

A). Exits a loop or switch statement

B). Continues to the next iteration in a loop

C). Returns a value from a function

D). Skips the current iteration in a loop

Which keyword is used to remove a property from an object?

A). delete

B). remove

C). erase

D). discard

Which keyword is used to create a loop with multiple cases in JavaScript?

A). switch

B). for

C). while

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What does the 'typeof' keyword return for a number?

A). number

B). string

C). object

D). undefined