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
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
What is a valid identifier in JavaScript?
A). 123abc
B). abc123
C). let
D). var
Which of the following is a reserved word in JavaScript?
A). myVariable
B). function
C). let
D). number
Is let a valid identifier in JavaScript?
A). Yes
B). No
C). Only in ES6
D). Only in non-strict mode
Can an identifier be a single character?
A). Yes
B). No
C). Only in ES5
D). Only in ES6
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 the following code output: var x; x = 5; var y = x;
A). undefined
B). null
C). 5
D). x
What is the maximum length of an identifier?
A). 255 characters
B). 31 characters
C). 64 characters
D). No limit
Which of the following is a valid identifier?
A). if
B). else
C). null
D). value1