如何仅附加到每个 div 一次

Question

我有几个 div 问题，用户会点击是或否按钮，并希望将他们点击的值附加到显示他们选择的内容的空 class。

每次我点击“是”或“否”时，该值都会附加到每个问题，因此在底部会显示值，即是，否，否，是。我想要它以便仅显示该特定问题的值。

到目前为止我有什么 -

$(function() {
var answer = $(".answer");
answer.each(function(index) {
$(this).on("click", function(){
  var userAnswer = $(this).attr("data-id");
  var displayAnswer = $(".display-answer");
  displayAnswer.each(function() {
      $(this).append(userAnswer);
    });
   });
  });
});

HTML

<div class="question-wrap">
        <p>Lorem ipsum dolor sit amet, consectetur adipisicing elit. Maiores, ea maxime velit hic tenetur, animi. Similique dolorem modi quos eius in, unde, sapiente, non ipsa aliquam accusamus quis facilis enim.</p>
        <div class="answer-buttons">
            <div class="answer yes"><p>Yes</p></div>
            <div class="answer no"><p>No</p></div>
        </div>
        <div class="display-answer"></div>
    </div>

Answer 1

基于您的标记的简单示例：

$('.answer').on('click', function() {
    $(this).parent().next().html($(this).html());
    // `$(this).html()` gets the html of an element you clicked on
    // `$(this).parent().next()` - gets `.display-answer` element which 
    // is located `next` to the `parent` of the element you clicked
});

<script src="https://cdnjs.cloudflare.com/ajax/libs/jquery/3.0.0/jquery.min.js"></script>
    <div class="question-wrap">
        <p>Question 1.</p>
        <div class="answer-buttons">
            <div class="answer yes"><p>Yes</p></div>
            <div class="answer no"><p>No</p></div>
        </div>
        <div class="display-answer"></div>
    </div>
    <div class="question-wrap">
        <p>Question 2.</p>
        <div class="answer-buttons">
            <div class="answer yes"><p>Yes</p></div>
            <div class="answer no"><p>No</p></div>
        </div>
        <div class="display-answer"></div>
    </div>
    <div class="question-wrap">
        <p>Question 3.</p>
        <div class="answer-buttons">
            <div class="answer yes"><p>Yes</p></div>
            <div class="answer no"><p>No</p></div>
        </div>
        <div class="display-answer"></div>
    </div>

Answer 2

感谢您提供 html。这意味着我们可以提供帮助！

U_mulder 的答案绝对有效，只要结构保持完全相同。我使用索引的建议行不通，因为每个问题有两个 "answer" 类。

在我添加的代码片段中，您会看到我首先使用 .parents(".question-wrap").eq(0) 查找 question-wrap div，然后使用 .children(".display-answer").eq(0) 查找显示 div。 .children() 仅在元素的直接子元素中搜索。如果需要往下看（parents()相反），使用.find().

在这里您将看到它的实际效果（使用 .text() 获取值，因为没有 data-id 属性）

$(function() {
var answer = $(".answer");
answer.each(function(index) {
$(this).on("click", function(){
  var userAnswer = $(this).text();
  var displayAnswer = $(this).parents(".question-wrap").eq(0).children(".display-answer").eq(0);
  displayAnswer.text(userAnswer);
   });
  });
});

.question-wrap {
  flex: 1;
  min-width: 150px;
  display: inline-block;
  margin-left: 10px;
}

.answer {
  cursor: pointer;
}

.display-answer {
  height:20px;
  padding: 10px;
  border: 1px solid lightgreen
}

<script src="https://cdnjs.cloudflare.com/ajax/libs/jquery/3.3.1/jquery.min.js"></script>
<div style="display: flex; flex-wrap: wrap">
<div class="question-wrap">
    <p>Lorem ipsum dolor sit amet, consectetur adipisicing elit. Maiores, ea maxime velit hic tenetur, animi.</p>
    <div class="answer-buttons">
        <div class="answer yes"><p>Yes</p></div>
        <div class="answer no"><p>No</p></div>
    </div>
    <div class="display-answer"></div>
</div>
<div class="question-wrap">
    <p>Lorem ipsum dolor sit amet, consectetur adipisicing elit. Maiores, ea maxime velit hic tenetur, animi.</p>
    <div class="answer-buttons">
        <div class="answer yes"><p>Yes</p></div>
        <div class="answer no"><p>No</p></div>
    </div>
    <div class="display-answer"></div>
</div>

<div class="question-wrap">
    <p>Lorem ipsum dolor sit amet, consectetur adipisicing elit. Maiores, ea maxime velit hic tenetur, animi.</p>
    <div class="answer-buttons">
        <div class="answer yes"><p>Yes</p></div>
        <div class="answer no"><p>No</p></div>
    </div>
    <div class="display-answer"></div>
</div>

<div class="question-wrap">
    <p>Lorem ipsum dolor sit amet, consectetur adipisicing elit. Maiores, ea maxime velit hic tenetur, animi.</p>
    <div class="answer-buttons">
        <div class="answer yes"><p>Yes</p></div>
        <div class="answer no"><p>No</p></div>
    </div>
    <div class="display-answer"></div>
</div>

<div class="question-wrap">
    <p>Lorem ipsum dolor sit amet, consectetur adipisicing elit. Maiores, ea maxime velit hic tenetur, animi.</p>
    <div class="answer-buttons">
        <div class="answer yes"><p>Yes</p></div>
        <div class="answer no"><p>No</p></div>
    </div>
    <div class="display-answer"></div>
</div>
</div>

Answer 3

这是获得您描述的结果的方法

    $(function(){
     $(".answer").click(function(){ /*You can register the click handler easily in one step*/
       var userAnswer = $(this).attr("data-id");
        $(this).parent().siblings(".display-answer").append(userAnswer); /*First, find the parent, then the "display-answer" siblings*/
      });
    
    });

p{
  font-family:sans-serif;
}

.answer{
  border:1px solid black;
  text-align:center;
  flex-grow:100;
  width:100px;
  display:inline-block;
}

<script src="https://cdnjs.cloudflare.com/ajax/libs/jquery/3.3.1/jquery.min.js"></script>
<div class="question-wrap">
    <p>Lorem ipsum dolor sit amet, consectetur adipisicing elit. Maiores, ea maxime velit hic tenetur, animi. Similique dolorem modi quos eius in, unde, sapiente, non ipsa aliquam accusamus quis facilis enim.</p>
    <div class="answer-buttons">
      <div class="answer yes" data-id="yes"><p>Yes</p></div>
      <div class="answer no" data-id="no"><p>No</p></div>
    </div>
    <div class="display-answer"></div>
</div>
<div class="question-wrap">
    <p>Lorem ipsum dolor sit amet, consectetur adipisicing elit. Maiores, ea maxime velit hic tenetur, animi. Similique dolorem modi quos eius in, unde, sapiente, non ipsa aliquam accusamus quis facilis enim.</p>
    <div class="answer-buttons">
      <div class="answer yes" data-id="yes"><p>Yes</p></div>
      <div class="answer no" data-id="no"><p>No</p></div>
    </div>
    <div class="display-answer"></div>
</div>

如何仅附加到每个 div 一次

How to append to each div only once

jquery

append

each