my code exam study

Expected user

Someone interested in birds, such as a student or bird watcher.

Program purpose

To help users find birds by primary color and view their names, colors, and images.

Design meets user needs

The dropdown lets users quickly choose a color and see matching birds.

First iteration statement

for (var i = 0; i < birdNames.length; i++)

Loop execution count

Once for every item in birdNames. If there are 100 birds, it runs 100 times.

Infinite loop cause

Removing i++ or changing the loop so i never increases.

Why infinite loop happens

The condition i < birdNames.length would stay true forever.

Runtime error

An error that happens while the program is running.

Runtime error example

Changing "birdImage" to a nonexistent element ID like "wrongImageID".

Why that causes runtime error

The program tries to update a screen element that does not exist.

List used to count colors

birdColors or filteredColors.

isEqual purpose

Returns true if two values are equal; otherwise returns false.

Counting algorithm

Set count to 0, loop through the list, use isEqual, and add 1 when it returns true.

Exam strategy

Read all questions first and answer the ones you know best first.