Answer & Solution
Answer: Option B
Solution:
$ is a valid identifier, and this code creates a variable named $.
11.
What does the following code do: var $ = 5;
12.
Is let a valid identifier in JavaScript?
13.
Can an identifier be a single character?
14.
Which of the following is a valid identifier name?
15.
What is the output of the following code: var x = 5, x = 10;
16.
Which of these is an invalid identifier?
17.
What will happen if you declare a variable with the name undefined?
18.
Are JavaScript identifiers case-sensitive?
19.
Which of the following is a valid identifier?
20.
What will the following code output: var x; x = 5; var y = x;