Answer & Solution
Answer: Option D
Solution:
value1 is a valid identifier, while if, else, and null are reserved words.
Q
Which of the following is a valid identifier?
Related Questions on Average
What is the output of the following code: var x = 5, x = 10;
A). Syntax error
B). 5
C). 10
D). Reference error
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
Can identifiers start with a digit in JavaScript?
A). Yes
B). No
C). Only in ES5
D). Only in strict mode
Which is a correct identifier for a variable?
A). 9variable
B). variable-9
C). variable_9
D). variable 9
Are JavaScript identifiers case-sensitive?
A). Yes
B). No
C). Only in ES6
D). Only in strict mode
Which of the following is a valid identifier name?
A). var
B). 123abc
C). _123abc
D). #abc123
Which identifier is valid in strict mode?
A). public
B). _public
C). 123public
D). public$
What will the following code output: var x; x = 5; var y = x;
A). undefined
B). null
C). 5
D). x
Is let a valid identifier in JavaScript?
A). Yes
B). No
C). Only in ES6
D). Only in non-strict mode
Which of the following is a reserved word in JavaScript?
A). myVariable
B). function
C). let
D). number