Week 2.1

Which of the following is an HTML comment?

• // This is a comment

• <!-- This is a comment -->

• /* This is a comment */

Which of the following is a JavaScript single line comment?

• <!-- This is a comment -->

• /* This is a comment */

• // This is a comment

Which of the following is a multiline comment in JavaScript?

• // This is a comment

• /* This is a comment */

• <!-- This is a comment -->

Which of the following data types represents true or false values in JavaScript?

• Number

• String

• Object

• Boolean

Which of the following data types represents a sequence of characters in JavaScript?

• Number

• String

• Object

• Boolean

Which of the following values represents the intentional absence of any object value in JavaScript?

• null

• undefined

• both null and undefined

• neither null nor undefined

Which of the following values represents a variable that has been declared but has not been assigned a value in JavaScript?

• null

• undefined

• both null and undefined

• neither null nor undefined

Which of the following is NOT a valid variable name in JavaScript?

• first-name

• lastName

• $variable

• #variable

Which of the following is the correct syntax for declaring and assigning a variable in JavaScript?

• var myVariable = "Hello World";

• myVariable = "Hello World";

• variable myVariable = "Hello World";

Are variables 'PhoneNum' and 'phoneNum' the same variable?

• Yes

• No