reactjsHow can I create a React.js quiz?

Creating a React.js quiz can be a great way to test your understanding of the library. Here's how you can do it:

1. Start by creating a React app using create-react-app command.

2. Set up the quiz structure in App.js. This will include a title, instructions, and the quiz questions.

function App() {
  return (
    <div>
      <h1>React Quiz</h1>
      <p>Answer the following questions to test your React knowledge.</p>
      <ul>
        <li>What is React?</li>
        <li>What is a React component?</li>
        <li>What is the purpose of a React component?</li>
      </ul>
    </div>
  );
}

export default App;

3. Create a new component for each question. This component will include a question, answer choices, and a submit button.

import React from "react";

class Question1 extends React.Component {
  render() {
    return (
      <div>
        <h3>What is React?</h3>
        <input type="radio" name="q1" value="1" />A library for building user interfaces <br />
        <input type="radio" name="q1" value="2" />A programming language <br />
        <input type="radio" name="q1" value="3" />A framework for web development <br />
        <button>Submit</button>
      </div>
    );
  }
}

export default Question1;

4. Create a state object to store the answers. This will be used to keep track of the user's answers.

this.state = {
  answers: {
    q1: null,
    q2: null,
    q3: null
  }
};

5. Create a function to handle the submit button. This will update the state with the user's answers.

handleSubmit = (e) => {
  e.preventDefault();
  this.setState({
    answers: {
      q1: e.target.q1.value,
      q2: e.target.q2.value,
      q3: e.target.q3.value
    }
  });
};

6. Finally, create a function to check the answers and display the results.

checkAnswers = () => {
  const { answers } = this.state;
  let correct = 0;
  if (answers.q1 === "1") {
    correct++;
  }
  if (answers.q2 === "2") {
    correct++;
  }
  if (answers.q3 === "3") {
    correct++;
  }
  alert(`You got ${correct} out of 3 correct!`);
};

Now you have a working React quiz!

Helpful links

• Create React App
• React Components

Edit this code on GitHub