JS Quiz

The following code will:
x++;

• Add 1 to the previous value of x
• Add 1 to the previous value of y
• Subtract 1 from the previous value of x
• Give an error message

A variable is used to:

• Store a value in memory
• Draw a circle
• Store a value that does not change
• Draw a rectangle

In a programming language, __________ are used to store data values.

• tags
• codes
• files
• variables

JavaScript uses the _______ keyword to define variables.

• vrb
• var
• vari
• va

What surrounds an if/else statement?

• Quotations
• Curly Brackets
• Parenthesis
• Square Brackets

What surrounds an array?

• Quotations
• Curly Brackets
• Parenthesis
• Square Brackets

An array is;

• Shapes
• Sizes
• Options
• Lists of data
  

What type of variable is quantites?

var quantities = [2, 4, 10, 1]

• string

• Boolean

• array

• number

What is first index value of an array?

• 2

• -1

• 0

• 1

What will this code display?

• 8, 2, 1, 4, 7

• 82147

• Myarray.length

• 5