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Mastering React

Challenge: Conditional Rendering - Bank AlertChallenge: Conditional Rendering - Bank Alert

Task: Creating a Bank Alert

Let's work with a bank account. We aim to develop a logic that informs the user whether they have sufficient funds on their card to cover a given price. Depending on the outcome, we will display different messages to the user.

The task is:

  • Create two components - App, parent, and Message, child.
  • The parent component (App) transfers the props moneyAvailable, price, and name.
    1. moneyAvailable - represents the amount of money the user has;
    2. price - denotes the amount of money the user needs to pay;
    3. name - refers to the user's name.
  • If the user has enough money to pay, we show the message: Success! The remaining amount of money for <user_name> is: <calculated_amount_of_money_left>. Thank you!.
  • If the user has not enough money to pay, we show the message: Failure! The bank account balance for <user_name> is: <moneyAvailable>. Unfortunately, you need to pay: <price>.
  1. In React, we use the ternary operator condition ? ... : ... to implement the logic of an if...else statement.
  2. To construct the string correctly,
    • Replace the placeholder user_name with the actual user name: name prop;
    • Replace the placeholder calculated_amount_of_money_left with the calculated amount of money left - moneyAvailable - price;
    • Replace the placeholder moneyAvailable with the actual available money - moneyAvailable prop;
    • Replace the placeholder price with the actual price - price prop.
  3. Use curly braces {...} to assign a value that is not a string type.

Tudo estava claro?

Seção 1. Capítulo 13
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Conteúdo do Curso

Mastering React

1. Introduction to React Fundamentals

What is React?SPAs vs. MPAs in Web DevelopmentHow React Works with the Virtual DOMIntroducing JSX in ReactCreating Complex JSX Elements Rendering Elements in ReactChallenge: Rendering ElementReact ComponentProps in ReactChallenge: Functional ComponentsConditional RenderingChallenge: Conditional Rendering - Chat NotificationChallenge: Conditional Rendering - Bank AlertRendering a Data CollectionChallenge: Rendering a Data CollectionIntroduction to React Section Sum-Up

2. Styling in React Apps

Introduction to Styling in ReactInline StylesInline Styles in PracticeChallenge: Inline StylesStyling with the CSS FileStyling with the CSS File in PracticeChallenge: Styling with the CSS FileStyling with the CSS ModulesFile Folder Structure OrganizationChallenge: CSS ModulesStyling in React Section Sum-Up

3. React Hooks and Context

Introduction: React Hooks and ContextuseState HookChallenge: Toggling VisibilityuseRef HookChallenge: Creating a Form ComponentuseEffect HookChallenge: Fetching and Displaying DatauseMemo HookChallenge: Car List FilteringContextContext in PracticeChallenge: World of Astronomy AppReact Hooks and Context Section Sum Up

4. React in the Real World

Setting Up EnvironmentCode EditorSetting Up the Project FolderTerminalStarting the ProjectReact in the Real World Section Sum Up

Mastering React

Challenge: Conditional Rendering - Bank AlertChallenge: Conditional Rendering - Bank Alert

Task: Creating a Bank Alert

Let's work with a bank account. We aim to develop a logic that informs the user whether they have sufficient funds on their card to cover a given price. Depending on the outcome, we will display different messages to the user.

The task is:

  • Create two components - App, parent, and Message, child.
  • The parent component (App) transfers the props moneyAvailable, price, and name.
    1. moneyAvailable - represents the amount of money the user has;
    2. price - denotes the amount of money the user needs to pay;
    3. name - refers to the user's name.
  • If the user has enough money to pay, we show the message: Success! The remaining amount of money for <user_name> is: <calculated_amount_of_money_left>. Thank you!.
  • If the user has not enough money to pay, we show the message: Failure! The bank account balance for <user_name> is: <moneyAvailable>. Unfortunately, you need to pay: <price>.
  1. In React, we use the ternary operator condition ? ... : ... to implement the logic of an if...else statement.
  2. To construct the string correctly,
    • Replace the placeholder user_name with the actual user name: name prop;
    • Replace the placeholder calculated_amount_of_money_left with the calculated amount of money left - moneyAvailable - price;
    • Replace the placeholder moneyAvailable with the actual available money - moneyAvailable prop;
    • Replace the placeholder price with the actual price - price prop.
  3. Use curly braces {...} to assign a value that is not a string type.

Tudo estava claro?

Seção 1. Capítulo 13
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