Which of the following is not a valid JavaScript variable name?Question 7Select one:a.FirstAndLastb._first_and_last_namesc.None of the aboved.2names
Question
Which of the following is not a valid JavaScript variable name?
Select one:
- a. FirstAndLast
- b. _first_and_last_names
- c. None of the above
- d. 2names
Solution
Analyzing the Options
-
a. FirstAndLast: This is a valid variable name in JavaScript. It starts with a letter and contains only letters, which is acceptable.
-
b. _first_and_last_names: This is also a valid variable name. In JavaScript, variable names can start with an underscore and can include letters, numbers, and underscores.
-
c. None of the above: This option implies that all previous options are valid.
-
d. 2names: This is not a valid variable name because variable names in JavaScript cannot start with a number.
Conclusion
The only option that does not conform to JavaScript variable naming rules is d. 2names.
Final Answer
d. 2names is not a valid JavaScript variable name.
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