Answer & Solution
Answer: Option A
Solution:
The typeof operator in JavaScript returns 'number' when applied to a numeric value, indicating the data type of the value.
Q
What does the expression typeof 42 return in JavaScript?
Related Questions on Average
Which data type represents variables that have been explicitly set to have no value?
A). Number
B). Undefined
C). String
D). Null
Which primitive data type represents variables that have been explicitly set to represent no value?
A). Number
B). String
C). Undefined
D). Null
Which primitive data type represents variables that are declared but not initialized?
A). Number
B). String
C). Undefined
D). Null
Which primitive data type represents unique identifiers introduced in ECMAScript 6?
A). Number
B). Symbol
C). Boolean
D). Undefined
Which data type is represented by the value null in JavaScript?
A). Numeric data
B). Textual data
C). Absence of value
D). Logical value
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
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 is the result of the expression typeof 'Hello' in JavaScript?
A). number
B). string
C). undefined
D). boolean
How is the Symbol data type different from other primitive data types in JavaScript?
A). Symbols can be used as object keys
B). Symbols can be compared directly
C). Symbols can be used in mathematical operations
D). Symbols can be concatenated with strings
What does the Boolean data type represent in JavaScript?
A). Textual data
B). Numeric data
C). Logical values
D). Absence of value