Rules: naming variables

Question 1

Variables must begin with:

Answer 1

Letter, dollar sign ($), or underscore (_)

Question 2

Variables must NOT begin with:

Answer 2

A number (0 - 9)

Question 3

You cannot use __________ words or __________ words as variables.

Answer 3

You cannot use KEY words or RESERVED words as variables.

Question 4

What are key words?

Answer 4

Special words in the JavaScript language that tells the interpreter to do something.

Question 5

What are reserved words?

Answer 5

Words that may be used as key words in future versions of JavaScript.

Question 6

Are variable names case sensitive?

Answer 6

Yes

Question 7

What is the best practice for creating two different variables with the same spelling but different casing?

Answer 7

The best practice is not to do that because it is confusing.

Question 8

What do you do if the variable name is made up of more than one word?

Answer 8

Use camelCase: first word is in lower case only and capitalise the first letter of subsequent words.
Eg, thisVariableIsCamelCased