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Creating Five Impactful Applications with ReactJS

JavaScript Quiz

Explore how to create a JavaScript quiz app that tests user knowledge with multiple-choice questions. Learn to manage state, handle answers, restart the quiz, and integrate confetti animations for a dynamic interface.

We'll cover the following...

There will be 10 multiple-choice questions, each with three options.

Overview

This JavaScript Quiz app will put a user’s knowledge of JavaScript principles to the test. All questions will be imported from a QuestionData.js file and displayed on the screen, alongside answer options for each. Finally, we’ll use a third-party confetti npm package to show animated confetti if the user gets a good score.

This is how our final app will look. Feel free to experiment with it and explore the app’s features.

import React from "react";
import Confetti from "react-confetti";

const Result = ({ score, questions, restartHandler }) => {
  const showConfetti = score > 7 ? <Confetti /> : null;
  return (
    <React.Fragment>
      {showConfetti}
      <div className="finalScore">
        You scored {score} out of {questions.length}
      </div>

      <button onClick={restartHandler} className="restart">
        RESTART{" "}
      </button>
    </React.Fragment>
  );
};

export default Result;
JavaScript Quiz

Because all responses are unique, we won’t use nanoid to generate the unique id key this time. Instead, we’ll use the answer text as a key. We’ll also include functions to restart the quiz and check the correct option, such as restartHandler and handleAnswerClick. This quiz isn’t restricted to JavaScript. We can use any topic and include many questions.