javascript - JQuery 循环遍历动态元素并获取数据值

Question

我正在尝试使用可折叠面板来完成我的要求

$(".sport").on("click", function() {
  var thisId = $(this).attr("id");
  var thisChildren = $(this) + ".sportlist";
  $(thisChildren).each(function(index) {
    
  });
});

<link href="https://stackpath.bootstrapcdn.com/font-awesome/4.7.0/css/font-awesome.css" rel="stylesheet"/>
<script src="https://cdnjs.cloudflare.com/ajax/libs/jquery/3.3.1/jquery.min.js"></script>
<script src="https://stackpath.bootstrapcdn.com/bootstrap/4.4.1/js/bootstrap.js"></script>
<link href="https://stackpath.bootstrapcdn.com/bootstrap/4.4.1/css/bootstrap.css" rel="stylesheet" />

<div style="height:600px;padding:0px;margin:0px;">

  <div class="col-md-3 scroll-container" style="padding:0px;">
    <div class="panel-group" id="accordionMenu" role="tablist" aria-multiselectable="true">
      <div class="panel panel-default">
        <div class="panel-heading" role="tab">
          <h4 class="panel-title">
            <a class="sport collapsed" role="button" data-toggle="collapse" data-parent="#accordionMenu" href="#collapse1" aria-expanded="true">
              <small><i class="more-less glyphicon glyphicon-chevron-right"></i></small> &nbsp;Cricket (2 items)
            </a>
          </h4>
        </div>
        <div class="panel-collapse collapse" id="collapse1" role="tabpanel" style="height: 0px;">
          <div class="sportlist" data-value="1">
            &nbsp;&nbsp; Sachin
          </div>
          <div class="sportlist" data-value="2">
            &nbsp;&nbsp; Kohli
          </div>
        </div>
        <div class="panel-heading" role="tab">
          <h4 class="panel-title">
            <a class="sport collapsed" role="button" data-toggle="collapse" data-parent="#accordionMenu" href="#collapse2" aria-expanded="true">
              <small><i class="more-less glyphicon glyphicon-chevron-right"></i></small> &nbsp;Other (2 items)
            </a>
          </h4>
        </div>
        <div class="panel-collapse collapse" id="collapse2" role="tabpanel" style="height: 0px;">
          <div class="sportlist" data-value="3">
            &nbsp;&nbsp; Bob
          </div>
          <div class="sportlist" data-value="4">
            &nbsp;&nbsp; Willson
          </div>
        </div>
      </div>
    </div>
  </div>
</div>

我需要的是，当我点击 Cricket 时，我需要将 data-value 存储到一个数组中。我尝试了一些事情但无法完成

$(".sport").on("click", function() {
  var thisId = $(this).attr("id");
  var thisChildren = $(this) + ".sportlist";
  $(thisChildren).each(function(index) {
    
  });
});

Answer 1

使用 a 中的 href 以及 $.map:

$(".sport").on("click", function() {
  let id = $(this).attr("href")
  , list = $.map($(id).find(".sportlist"), function(item){
    return $(item).data("value")      
  })
  console.log(list)
});

<link href="https://stackpath.bootstrapcdn.com/font-awesome/4.7.0/css/font-awesome.css" rel="stylesheet"/>
<script src="https://cdnjs.cloudflare.com/ajax/libs/jquery/3.3.1/jquery.min.js"></script>
<script src="https://stackpath.bootstrapcdn.com/bootstrap/4.4.1/js/bootstrap.js"></script>
<link href="https://stackpath.bootstrapcdn.com/bootstrap/4.4.1/css/bootstrap.css" rel="stylesheet" />

<div style="height:600px;padding:0px;margin:0px;">

  <div class="col-md-3 scroll-container" style="padding:0px;">
    <div class="panel-group" id="accordionMenu" role="tablist" aria-multiselectable="true">
      <div class="panel panel-default">
        <div class="panel-heading" role="tab">
          <h4 class="panel-title">
            <a class="sport collapsed" role="button" data-toggle="collapse" data-parent="#accordionMenu" href="#collapse1" aria-expanded="true">
              <small><i class="more-less glyphicon glyphicon-chevron-right"></i></small> &nbsp;Cricket (2 items)
            </a>
          </h4>
        </div>
        <div class="panel-collapse collapse" id="collapse1" role="tabpanel" style="height: 0px;">
          <div class="sportlist" data-value="1">
            &nbsp;&nbsp; Sachin
          </div>
          <div class="sportlist" data-value="2">
            &nbsp;&nbsp; Kohli
          </div>
        </div>
        <div class="panel-heading" role="tab">
          <h4 class="panel-title">
            <a class="sport collapsed" role="button" data-toggle="collapse" data-parent="#accordionMenu" href="#collapse2" aria-expanded="true">
              <small><i class="more-less glyphicon glyphicon-chevron-right"></i></small> &nbsp;Other (2 items)
            </a>
          </h4>
        </div>
        <div class="panel-collapse collapse" id="collapse2" role="tabpanel" style="height: 0px;">
          <div class="sportlist" data-value="3">
            &nbsp;&nbsp; Bob
          </div>
          <div class="sportlist" data-value="4">
            &nbsp;&nbsp; Willson
          </div>
        </div>
      </div>
    </div>
  </div>
</div>