How to add drag-and-drop and matching questions to online quizzes

How to add dragging and matching questions to online answering questions

In modern education, online answering questions has become a commonly used teaching method. In order to improve students' participation and thinking ability, we can add drag-and-drop and matching questions to the online answering process, so that students can participate and think more actively during the answering process. This article will introduce how to use HTML, CSS and JavaScript to implement drag-and-drop and matching of questions.

1. Implementation of question drag and drop

Topic drag means dragging the question options to the corresponding position. We can use HTML5’s Drag and Drop API to achieve this functionality. First, we need to create the drag source and drag target in HTML. For example:

<!-- 拖拽源 -->
<div draggable="true">
  这是问题的选项一
</div>

<!-- 拖拽目标 -->
<div ondrop="drop(event)" ondragover="allowDrop(event)">
  这是问题的答案一
</div>

Among them, draggable="true" means that this element can be dragged, and ondrop and ondragover are the event handling functions required by the drag target. The following is the corresponding JavaScript code:

function allowDrop(event) {
  event.preventDefault(); // 阻止浏览器默认处理拖拽事件
}

function drag(event) {
  event.dataTransfer.setData("text", event.target.innerHTML); // 将拖拽元素的数据保存到dataTransfer对象中
}

function drop(event) {
  event.preventDefault();
  var data = event.dataTransfer.getData("text"); // 获取拖拽元素的数据
  event.target.innerHTML = data; // 将数据放置到拖拽目标中
}

In this way, when students drag the drag source to the drag target, the drag target will display the content of the drag source. In this way, we can drag and drop question options.

2. Implementation of question matching

Topic matching means matching questions and answers. We can use HTML and JavaScript to achieve this functionality. First, we need to create a list of questions and answers. For example:

<ul id="questions">
  <li draggable="true" ondragstart="drag(event)">问题一</li>
  <li draggable="true" ondragstart="drag(event)">问题二</li>
  ...
</ul>

<ul id="answers">
  <li ondrop="drop(event)" ondragover="allowDrop(event)">答案一</li>
  <li ondrop="drop(event)" ondragover="allowDrop(event)">答案二</li>
  ...
</ul>

Then, we need to write JavaScript code to handle the drag event and matching logic:

function allowDrop(event) {
  event.preventDefault();
}

function drag(event) {
  event.dataTransfer.setData("text", event.target.innerHTML);
}

function drop(event) {
  event.preventDefault();
  var data = event.dataTransfer.getData("text");

  if (event.target.parentNode.id === "answers") {
    // 将答案放置到问题下面
    var question = document.createElement("li");
    question.innerHTML = data;
    question.draggable = true;
    question.ondragstart = drag;
    event.target.appendChild(question);
  } else if (event.target.parentNode.id === "questions") {
    // 将问题放置到答案下面
    var answer = document.createElement("li");
    answer.innerHTML = data;
    answer.ondrop = drop;
    answer.ondragover = allowDrop;
    event.target.appendChild(answer);
  }
}

Through the above code, we can match the questions and answers to achieve the question Match function.

Summary

By using HTML, CSS and JavaScript, we can add drag-and-drop and matching questions to online answer questions, thereby improving students' participation and thinking skills. Specific code examples are given above. You only need to make corresponding modifications according to your needs to realize various types of drag and match questions. Hope this article is helpful to you.

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