JavaScript Review: variables, functions, types, loops, input

What is a variable?

• A symbol or container that holds a value.

• A subroutine.

• A conditional statement.

• A number.

What three keywords can be used to declare variables?

• def, var, and const

• const, var, and let

• var, let, and i

• int, float, and str

What makes a constant different from other variables?

• A constant always holds a number

• A constant is a property of an object

• A constant is a variable that cannot be redefined.

• A constant is always a Boolean

A block of code in JavaScript should be...

• Indented

• Enclosed in curly braces and indented

• Enclosed in parentheses

• Typed in all uppercase letters

What is a Boolean value?

• A whole number

• A fraction expressed as a decimal

• True or False

• A sequence or characters

What is an integer?

• A whole number

• A fraction expressed as a decimal

• True or False

• A sequence or characters

What is a float?

• A whole number

• A fraction expressed as a decimal

• True or False

• A sequence or characters

We can indicate strings by...

• Surrounding them with double quotes

• Using the String() function

• Surrounding them with parantheses

• Using dot notation

In this code snippet, the variable height is assigned a value that is...

• a float

• an integer

• a boolean

• a string

What is a function?

• A block of code that performs a particular task

• An entire program

• The part of a program that asks for user input

• The part of a program that creates output