How to Add Question Explanations and Reference Answers in an Online Quiz System

The Importance of Adding Question Explanations and Reference Answers in an Online Quiz System

Providing explanations and reference answers for each question allows users to instantly see the correct answer and detailed explanation after answering, which helps deepen understanding of the subject matter and improve learning outcomes.

Database Design

First, you need to add two fields in the question database to store the explanation and reference answer. For example, add fields: explanation (analysis) and reference_answer. This allows retrieving the corresponding content based on the question ID.

Backend Code Modification

On the backend, you need to add an API to fetch the explanation and reference answer for each question. You can either add fields to an existing API or create a separate API that returns question details along with the explanation content.

Frontend Code Modification

On the frontend, modify the question display and quiz logic. After the user answers a question, the page should display the explanation and reference answer. You can add a display button near the question area that, when clicked, shows the explanation and reference answer.

Optimizing Display

Explanations and reference answers can be displayed using a popup or collapsible panel to keep the interface clean and user-friendly. Use JavaScript to listen for the button click event, retrieve the corresponding explanation and reference answer, and display it on the page.

Frontend Implementation Example

<div class="question-container">
  <div class="question">Question content</div>
  <div class="options">Options content</div>
  <button class="show-answer-btn">Show Explanation and Reference Answer</button>
  <div class="answer hidden">Explanation and reference answer content</div>
</div>

<script>
  document.querySelectorAll('.show-answer-btn').forEach(function(btn) {
    btn.addEventListener('click', function() {
      var analysis = this.parentNode.querySelector('.answer');
      analysis.classList.toggle('hidden');
    });
  });
</script>

Conclusion

By implementing database design, backend API modification, and frontend display, you can easily add explanations and reference answers to questions in an online quiz system. This feature significantly enhances the user's learning experience and quiz performance.