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MCQs

  1. Which React Hook is used to add **state** in a functional component?
    a. useState
    b. useEffect
    c. useContext
    d. useReducer
    Answer: a. useState (useState is the built-in React Hook that lets you store and update local state in functional components.)  
  2. What does React’s “virtual DOM” do?
    a. It replaces the real DOM completely.
    b. It allows React to update only parts of the real DOM that changed.
    c. It stores user data on the server.
    d. It styles components.
    **Answer: b. It allows React to update only parts of the real DOM that changed. (**The virtual DOM compares previous and current UI states and updates only the changed elements for better performance.)  
  3. Which of the following is NOT required for this project?
    a. Node.js (for npm)
    b. A code editor
    c. A paid API key
    d. A web browser
    Answer: c. A paid API key (JokeAPI is free to use and does not require any authentication or payment.)  
  4. What is the main purpose of the Button component in our app?
    a. Fetch and display the joke.
    b. Hold the state for the joke.
    c. Render the button and trigger fetching the joke when clicked.
    d. Style the joke text.
    Answer: c. Render the button and trigger fetching the joke when clicked. (The Button component is responsible for rendering the UI button and handling the click event to fetch a new joke.)  
  5. How do we ensure the React app doesn’t reload the page when updating jokes?
    a. We must manually refresh the page.
    b. React’s state updates re-render only part of the UI, avoiding full reload.
    c. We use a backend server to reload data.
    d. It is not possible; the page always reloads.
    Answer: b. React’s state updates re-render only part of the UI, avoiding full reload. (React updates the component state using hooks like useState, allowing dynamic content changes without refreshing the page.)

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Building a Random Joke Generator Using ReactJS

author

Building a Random Joke Generator Using ReactJS

MODULE 1 : Introduction
lessonIntroduction
lessonWhat is ReactJS?
lessonWhat is a Random Joke Generator?
lessonAim of the project
MODULE 2 : Pre-Requisites and Tech Stack Used
lessonPre-requisites and Tech Stack Used
lessonBasic Requirements
lessonTech Stack Used
lessonInput and Output
MODULE 3 : Necessary Concepts
lessonNecessary Concepts
lessonComponents
lessonArrow Functions and Event Handling
lessonState and Hooks
lessonFetching Data from an API
MODULE 4 : Step-by-Step Implementation
lessonStep-by-Step Implementation
lessonSet up the environment
lessonCreate Application Structure (Directory Structure)
lessonSteps To Build a Random Joke Generator
MODULE 5 : Deployment
lessonDeployment
lessonUpload Files to a GitHub Repository
lessonDeploy
MODULE 6 : Conclusion
lessonConclusion
lessonLearning Outcome of the Project
lessonLive Link and Output Screenshot
lessonMCQs
lessonResources for Further Learning

Building a Random Joke Generator Using ReactJS

    MODULE 1 : Introduction
    lessonIntroduction
    lessonWhat is ReactJS?
    lessonWhat is a Random Joke Generator?
    lessonAim of the project
    MODULE 2 : Pre-Requisites and Tech Stack Used
    lessonPre-requisites and Tech Stack Used
    lessonBasic Requirements
    lessonTech Stack Used
    lessonInput and Output
    MODULE 3 : Necessary Concepts
    lessonNecessary Concepts
    lessonComponents
    lessonArrow Functions and Event Handling
    lessonState and Hooks
    lessonFetching Data from an API
    MODULE 4 : Step-by-Step Implementation
    lessonStep-by-Step Implementation
    lessonSet up the environment
    lessonCreate Application Structure (Directory Structure)
    lessonSteps To Build a Random Joke Generator
    MODULE 5 : Deployment
    lessonDeployment
    lessonUpload Files to a GitHub Repository
    lessonDeploy
    MODULE 6 : Conclusion
    lessonConclusion
    lessonLearning Outcome of the Project
    lessonLive Link and Output Screenshot
    lessonMCQs
    lessonResources for Further Learning
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