javascript - 如何在jquery中选择更改时获取所选选项的数据值

Question

我的html语法如下

<select id="category" name="category">
  <option value="0">Please Select</option>
  <option value="50" data-value="akne">ACNE</option>
  <option value="11" data-value="rednessbumps">Redness / Bumps</option>
  <option value="15" data-value="sunspotsfreckles">Sunspots / Freckles</option>
  <option value="16" data-value="agingwrinkles">Aging / Wrinkles</option>
  <option value="17" data-value="dry-sensitive">Dry Sensitive</option>
</select>

$("#category").change(function () {
  var selectedItem = $(this).val();
  var abc=$(this).attr("data-value");
});

这里我无法在jquery中获取data-value，我应该如何获取它？

Answer 1

使用

var abc = $('option:selected',this).data("value");

尝试

$("#category").change(function() {
  var selectedItem = $(this).val();
  var abc = $('option:selected',this).data("value");
  alert(abc);
});

<script src="https://cdnjs.cloudflare.com/ajax/libs/jquery/3.3.1/jquery.min.js"></script>
<select id="category" name="category">
  <option value="0">Please Select</option>
  <option value="50" data-value="akne">ACNE</option>
  <option value="11" data-value="rednessbumps">Redness / Bumps</option>
  <option value="15" data-value="sunspotsfreckles">Sunspots / Freckles</option>
  <option value="16" data-value="agingwrinkles">Aging / Wrinkles</option>
  <option value="17" data-value="dry-sensitive">Dry Sensitive</option>
</select>