What is the use of type of operator?

[vidushi-tomar-7f335103 (Vidushi Tomar)]

What is the use of type of operator?

[sakshi-srivastava-f3c2a4a4 (Sakshi Srivastava)]

typeof operator tells you the type of the value stored in a variable.
Example:

typeof 'Vidhushi' === 'string' // true

typeof 123 === 'number' // true

typeof {} === 'object' // true

Also, if a variable is not defined, typeof operator doesn’t throw an error and instead returns undefined type.