我想获取父属性，但它 returns 未定义 jquery

Question

这是我的代码：

$(document).on('click', '.setting', function(e){
 alert($(this).parent().data('fieldtype'));
});

<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>
<div class="row" id="field">
  <div class="col-md-9 col-sm-6 col-xs-6 pad" style="">
    <textarea class="form-control field" name="key1" rows="3" data-fieldtype="test" data-group="">demo</textarea>
  </div>
  <div class="col-md-1 col-sm-2 col-xs-2 pad pointer movefield" data-key="1">
    <div><span class="glyphicon glyphicon-arrow-up"></span></div>
  </div>
  <div class="col-md-1 col-sm-2 col-xs-2 pad pointer setting" data-key="1">
    <div><span class="glyphicon glyphicon-cog">click me</span></div>
  </div>
  <div class="col-md-1 col-sm-2 col-xs-2 pad pointer field-remove" data-key="1">
    <div>x</div>
  </div>
</div>

现在的问题是没有得到 data-fieldtype 的值，因为这个方法是 returns undefined。并且还建议获取 data-group 的值，因为目前这个是空白的

Answer 1

因为 textarea 不是 .setting 的父级。它的父项是 #field，您应该在其中找到 textarea。

$(this).parent().find('[data-fieldtype]').data('fieldtype')

$(document).on('click', '.setting', function(e){
  console.log(
    $(this).parent().find('[data-fieldtype]').data('fieldtype')
  );
});

<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>
<div class="row" id="field">
  <div class="col-md-9 col-sm-6 col-xs-6 pad" style="">
    <textarea class="form-control field" name="key1" rows="3" data-fieldtype="test" data-group="">demo</textarea>
  </div>
  <div class="col-md-1 col-sm-2 col-xs-2 pad pointer movefield" data-key="1">
    <div><span class="glyphicon glyphicon-arrow-up"></span></div>
  </div>
  <div class="col-md-1 col-sm-2 col-xs-2 pad pointer setting" data-key="1">
    <div><span class="glyphicon glyphicon-cog">click me</span></div>
  </div>
  <div class="col-md-1 col-sm-2 col-xs-2 pad pointer field-remove" data-key="1">
    <div></div>
  </div>
</div>

我想获取父属性，但它 returns 未定义 jquery

I want to fetch the parent attribute but it returns undefined jquery

html

javascript

jquery

custom-data-attribute