Programming

Declare task-related values with `const` and update a value declared with `let`.

Use strings, numbers, and booleans to represent task information.

Write a JavaScript function that accepts an argument and returns a value.

Use an `if` statement to choose an action based on whether a task is complete.

Represent one task as an object with title and completion properties.

Store multiple task objects in an array.

Create a new array containing an added task by using array spread syntax.

Transform task objects with `map` and select task objects with `filter`.

Build a valid JSX screen using `View` and `Text` components.

Style a screen with React Native's `StyleSheet` API.

Create a reusable function component that renders one part of the interface.

Pass task information into a component through props.

Run a function when a user taps a `Pressable` component.

Create a state value and update it with React's `useState` hook.

Connect a `TextInput` to state to create a controlled input.

Use a button handler to process the current input value.

Trim user input and reject a blank task title.

Create a new task object with a unique identifier, title, and completion status.

Append a new task object to the task-list state without mutating the existing array.

Render task objects efficiently with a React Native `FlatList`.

Create a `TaskItem` component that receives one task through props.

Configure `FlatList` to identify each rendered task by its unique identifier.

Toggle one task's completion status by updating the task array with `map`.

Apply a completed style conditionally from a task's completion status.

Delete a selected task by updating the task array with `filter`.

Add and import the AsyncStorage package in an Expo Snack project.

Convert a task array to and from JSON for storage.

Load saved tasks from AsyncStorage when the app starts.

Save the task array to AsyncStorage after it changes.

Prevent an initial empty task array from overwriting previously saved tasks.

Apply consistent spacing, colors, and touch-target sizes to the task-tracker interface.

Submit a task from the phone keyboard and dismiss the keyboard afterward.

Add accessibility labels and completion-state information to interactive task controls.

Execute a checklist that tests adding, rejecting, completing, deleting, and reloading tasks.

Use console output and an error message to diagnose and repair a seeded app defect.

Share the finished Expo Snack project by generating and verifying its project link.