从jquery中的event.target获取类名后如何使用类名?

$(".readMorebtn_id").on('click', function(e) { var icon = e.target; var parentDiv = $(icon).parent(); var child = $(parentDiv).children(".afterReadMore_Class"); var cls = $(child).attr('class'); console.log(cls); });

<script src="https://cdnjs.cloudflare.com/ajax/libs/jquery/3.3.1/jquery.min.js"></script> <div id="readMorediv_id"> <button class="readMorebtn_id">Read More</button> <div class="afterReadMore_Class" style="display: none !important;"> <div> <span><b>User CNIC:</b></span><span><?php $row['usercnic']?></span> </div> <div> <span><b>Father CNIC:</b></span><span><?php echo$row['fathercnic']?> </span> </div> </div> </div>

我想你需要这样的东西:

$(".readMorebtn_id").on('click', function(){
    $(this).parent().find(".afterReadMore_Class").show();
});

它将显示单击的“readmorebtn_id”的相关“afterreadmore_类”。

$(".readMorebtn_id").on('click', function() {
  $(this).parent().find(".afterReadMore_Class").show();
});

<script src="https://cdnjs.cloudflare.com/ajax/libs/jquery/3.3.1/jquery.min.js"></script>
<div id="readMorediv_id">
  <button class="readMorebtn_id">Read More</button>
  <div class="afterReadMore_Class" style="display: none !important;">
    <div>
      <span><b>User CNIC:</b></span><span><?php  $row['usercnic']?></span>
    </div>
    <div>
      <span><b>Father CNIC:</b></span><span><?php echo$row['fathercnic']?> 
 </span>
    </div>
  </div>
</div>
<div id="readMorediv_id">
  <button class="readMorebtn_id">Read More</button>
  <div class="afterReadMore_Class" style="display: none !important;">
    <div>
      <span><b>User CNIC:</b></span><span><?php  $row['usercnic']?></span>
    </div>
    <div>
      <span><b>Father CNIC:</b></span><span><?php echo$row['fathercnic']?> 
 </span>
    </div>
  </div>
</div>
<div id="readMorediv_id">
  <button class="readMorebtn_id">Read More</button>
  <div class="afterReadMore_Class" style="display: none !important;">
    <div>
      <span><b>User CNIC:</b></span><span><?php  $row['usercnic']?></span>
    </div>
    <div>
      <span><b>Father CNIC:</b></span><span><?php echo$row['fathercnic']?> 
 </span>
    </div>
  </div>
</div>