How to add the analysis and reference answers of the questions in the online answer questions

How to add the analysis and reference answers of the questions in the online answering system

In the online answering system, in order to provide a better learning experience and problem solving guidance, we often It is necessary to add analysis and reference answers to each question. In this way, students can instantly check the correct answers and analysis after answering the questions, thereby deepening their understanding and mastery of the knowledge points. The following will introduce how to add question analysis and reference answer functions in the online question answering system through code modification.

Suppose we already have a basic online question answering system that allows users to answer a series of multiple choice questions. Now we need to add analysis and reference answers to each question. We can complete the addition of this function through the following steps:

1. Database Design
   First, we need to add two fields to the question database to store parsing and reference answers. You can add two fields to the existing question table, such as analysis and reference_answer. In this way, when displaying the question, we can obtain the corresponding analysis and reference answers from the database based on the question ID.
2. Back-end code modification
   In the back-end code, we need to add corresponding interfaces to obtain the analysis and reference answers of the questions. This can be achieved by adding corresponding fields to the existing API or adding a new interface. For example, in the API for obtaining question details, we can add the return of parsing and reference answer fields.
3. Front-end code modification
   In the front-end page, we need to modify the question display and answer logic accordingly. When students finish answering a question, we need to display the analysis and reference answers to the question. You can add a display button at the bottom of the answer page or near the question area. After clicking the button, the analysis and reference answer content can be displayed.

When displaying analysis and reference answers, you can use pop-up boxes or folding panels to make the interface more beautiful and easy to operate. You can monitor the click event of the button through JavaScript code, obtain the analysis and reference answer of the corresponding question in the event processing function, and display it on the page.

The following is a pseudocode example, showing how the front-end code implements the function of displaying analysis and reference answers:

<!-- 单个题目的HTML代码 -->
<div class="question-container">
  <div class="question">题目内容</div>
  <div class="options">选项内容</div>
  <button class="show-answer-btn">显示解析和参考答案</button>
  <div class="answer hidden">解析和参考答案内容</div>
</div>

<!-- JavaScript代码 -->
<script>
  // 监听按钮的点击事件
  document.querySelectorAll('.show-answer-btn').forEach(function(btn) {
    btn.addEventListener('click', function() {
      // 获取按钮父元素中的解析和参考答案元素
      var analysis = this.parentNode.querySelector('.answer');
      // 切换解析和参考答案元素的显示状态
      analysis.classList.toggle('hidden');
    });
  });
</script>

In this way, when students click the button next to the question, the analysis and reference of the corresponding question The answer will be displayed.

The above is a specific code example of how to add question analysis and reference answers to the online question answering system. Through database design, back-end code modification and front-end code modification, we can easily implement this function and improve students' learning effect and experience. Hope this helps!

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