Q
Which of the following is not a valid JavaScript variable name according to naming conventions?

Answer & Solution

Answer: Option C
Solution:
According to JavaScript naming conventions, variable names cannot start with a number. Therefore, 2ndVariable is not a valid variable name.
Related Questions on Average

What will the data type of the variable name be if it is assigned the value 'John Doe'?

A). Number

B). String

C). Boolean

D). Undefined

What is the data type of the value 'null' (as a string) in JavaScript?

A). Object

B). String

C). Null

D). Undefined

What will be the output of typeof NaN in JavaScript?

A). String

B). Number

C). NaN

D). Undefined

What data type is used to represent a collection of key-value pairs in JavaScript?

A). Object

B). Array

C). Map

D). Set

What is the data type of the value NaN in JavaScript?

A). Null

B). String

C). Number

D). Boolean

Which data type is used to represent a unique identifier in JavaScript?

A). Identifier

B). Key

C). Object

D). Symbol

What will be the output of typeof {} in JavaScript?

A). Object

B). Null

C). Undefined

D). Boolean

Which data type is used to represent the absence of a value in JavaScript?

A). Null

B). Undefined

C). NaN

D). Boolean

What will be the output of typeof undefined in JavaScript?

A). String

B). Undefined

C). Null

D). Object

What is the data type of the value null in JavaScript?

A). Object

B). String

C). Null

D). Undefined