Answer & Solution
Answer: Option B
Solution:
$ is a valid identifier, and this code creates a variable named $.
Q
What does the following code do: var $ = 5;
Related Questions on Average
Which of the following is a valid identifier name?
A). var
B). 123abc
C). _123abc
D). #abc123
Which characters are allowed in JavaScript identifiers?
A). Letters only
B). Letters and numbers only
C). Letters, numbers, $ and _
D). Any special characters
Which of the following is a valid identifier?
A). if
B). else
C). null
D). value1
Which identifier is valid in strict mode?
A). public
B). _public
C). 123public
D). public$
What is the output of the following code: var x = 5, x = 10;
A). Syntax error
B). 5
C). 10
D). Reference error
Which of the following is a reserved word in JavaScript?
A). myVariable
B). function
C). let
D). number
Can JavaScript identifiers include spaces?
A). Yes
B). No
C). Only in ES6
D). Only in strings
Which of the following is an invalid identifier?
A). _variable
B). var$
C). 2variable
D). variable2
Which is a correct identifier for a variable?
A). 9variable
B). variable-9
C). variable_9
D). variable 9
What will be the result of using a reserved word as an identifier?
A). No error
B). Syntax error
C). Logical error
D). Runtime error