AP CSP Photo App List Flashcard

Front

What is the purpose of the photoList in the Photo App code?

Back

To store a list of image URLs

Front

What happens when the user clicks on photo_select in the Photo App code?

Back

A new photo is appended to photoList.

Front

What does the rightButton click event do in the Photo App code?

Back

It moves the index to the next photo, if possible.

Front

How does the leftButton event ensure the index doesn't go below 0 in the Photo App code?

Back

It checks if the index is greater than 0 before decrementing.

Front

What does clicking on the randomButton in the Photo App code do?

Back

Selects a random photo index and update the screen.

Front

What does the updateScreen function do?

Back

Displays the current photo and updates the total photo count.

Front

How is the total number of photos displayed in the Photo App code?

Back

By setting the text of "totalPhotosOutput" to the length of photoList.

Front

What happens if you click the rightButton when the index is already at the last photo
in the Photo App code?

Back

Nothing happens since the condition prevents it.

Front

What does appendItem(photoList, getImageURL("photo_select")) do in the Photo App code?

Back

Adds the URL from "photo_select" to the photoList .

Front

What does randomNumber(0, photoList.length - 1) do when you click on the randomButton in the Photo App code?

Back

Generates a random index within the valid range of photoList.