App Lab Quiz

What is the purpose of the setScreen block in App Lab?

• To change the background color

• To navigate between different screens in an app

• To display a message

• To create a button

What does the id in App Lab refer to?

• A unique identifier for UI elements

• A type of variable

• A function name

• A screen name

Which block is used to display text on the screen in App Lab?

• setScreen

• setText

• showText

• displayText

How do you define a variable in App Lab?

• var variableName;

• define variableName;

• set variableName;

• let variableName;

What is a variable?

• A fixed value that cannot change

• A named storage location for data

• A type of function

• A user interface element

Which block would you use to change the text of a label?

• setScreen

• setText

• updateLabel

• changeText

What does the onEvent block do?

• It sets the initial screen

• It defines a function to respond to user interactions

• It creates a new variable

• It displays a message

Which UI element is used to trigger actions in App Lab?

• Label

• Button

• Text Input

• Image

What is the purpose of a label in App Lab?

• To store data

• To perform calculations

• To display information to the user

• To navigate screens

How do you use a variable in App Lab?

• By creating it and then using its name to reference its value

• By only using it in the same block

• By defining it as a constant

• By declaring it as a function