选择值为null，如果禁用了该值。

Question

我有一个Select元素，所有选项都被禁用了，我该如何设置它的值？

<select id="testselect">
   <option disabled>1</option>
   <option disabled>2</option>
   <option disabled selected="selected">3</option>
</select>

alert($("#testselect").val()); //result null

jsfiddle

- Alex

---

使用$("#testselect option:selected")。请查看此处 https://jsfiddle.net/arjqk00f/。 - Carsten Løvbo Andersen

Answer 1

试一下这个 ==>

alert($('#testselect option[disabled]:selected').val());

<script src="https://code.jquery.com/jquery-2.2.4.min.js"></script>
<select id="testselect">
  <option disabled>1</option>
  <option disabled>2</option>
  <option disabled selected>3</option>
</select>

- Narayan

Answer 2

您需要明确要返回哪个元素的值。

alert($("#testselect option:selected").val());

<script src="https://ajax.googleapis.com/ajax/libs/jquery/1.9.1/jquery.min.js"></script>
<select id="testselect">
  <option disabled>1</option>
  <option disabled>2</option>
  <option disabled selected>3</option>
</select>

- Oen44