Answer & Solution
Answer: Option A
Solution:
The typeof operator returns 'undefined' for variables that are not initialized.
Q
What is the result of typeof undefined?
Related Questions on Average
What does typeof document return in a web browser environment?
A). document
B). object
C). function
D). undefined
What is the result of typeof null?
A). null
B). undefined
C). object
D). number
What is the result of typeof document.getElementById('example')?
A). element
B). object
C). function
D). undefined
What is the result of typeof window in a web browser environment?
A). window
B). object
C). function
D). undefined
What does typeof console return in a web browser environment?
A). console
B). object
C). function
D). undefined
What is the result of typeof new SyntaxError('syntax error')?
A). syntaxerror
B). object
C). function
D). undefined
What is the result of typeof new TypeError('type error')?
A). typeerror
B). object
C). function
D). undefined
What does typeof { name: 'John' } return?
A). object
B). array
C). function
D). undefined
What is the result of typeof [1, 2, 3]?
A). array
B). object
C). list
D). undefined
What does typeof new Float32Array() return?
A). float32array
B). array
C). object
D). undefined