JavaScript Basics

Message or Prompt can be displayed in MakeCode with

• game.splash

• game.askForNumber

• game.askForString

• game.SplashDialog

A variable is a label that references a value.

What keyword is used to declare a variable in MakeCode?

• let

• var

• const

• function

What is the symbol for 'not equal to' in MakeCode?

• !===

• =/=

• <>

• !=

What is the result of 10 > 5 in MakeCode?

• true

• false

• 0

• 10

What is the result of 5 == '5' in MakeCode?

• null

• false

• true

• undefined

What is the syntax for the 'else if' statement in MakeCode?

• else if condition

• else if(condition)

• else if: condition

• else if{condition}

In JavaScript we use the _____________to create a block that groups one or more simple statements.

• Curly Braces {}

• Circular braces ()

• Square Braces []

• None of these

_____________ are names you choose for variables, functions, classes, and so on.

• Variables

• Keywords

• Identifiers

• Constants

Variable names can only contain letters, numbers, underscores, or dollar signs and cannot contain spaces. Also, variable names must begin with a letter, _____________ or _____________.

• A Hash (#) or a dollar sign ($)

• An Asterisk (*) or a dollar sign ($).

• An ampersand, (&) or a dollar sign ($).

• An underscore (_) or a dollar sign ($).

An undefined variable is a variable that has been declared but not ______________while an undeclared variable is a variable that has not been declared.

• initialized

• taken for comparison

• used in any calculation

• shown as output