What does the expression typeof '123' return in JavaScript?
A). number
B). string
C). undefined
D). boolean
Which primitive data type represents textual data?
A). Number
B). String
C). Boolean
D). Undefined
What is the result of the expression typeof undefined in JavaScript?
A). number
B). string
C). undefined
D). boolean
Which of the following statements accurately describes the Boolean data type in JavaScript?
A). It represents textual data
B). It represents numeric data
C). It represents logical values
D). It represents an absence of value
What does the expression typeof Symbol() return in JavaScript?
A). number
B). string
C). symbol
D). boolean
What does the expression typeof null return in JavaScript?
A). number
B). string
C). object
D). boolean
What does the expression typeof 42 return in JavaScript?
A). number
B). string
C). undefined
D). boolean
Which primitive data type represents unique identifiers introduced in ECMAScript 6?
A). Number
B). Symbol
C). Boolean
D). Undefined
Which primitive data type in JavaScript represents integers and floating-point numbers?
A). Number
B). String
C). Boolean
D). Undefined
What is the result of the expression typeof 'Hello' in JavaScript?
A). number
B). string
C). undefined
D). boolean