javascript - SlideUp() 运行两次

Question

这个问题已经有答案了:

Callback of .animate() gets called twice jquery (2 个回答)

已关闭 9 年前。

我正在使用 jQuery 创建一个多选项卡 Accordion 。 “Headline 1”面板工作正常，但在“Headline 2”面板上运行 SlideDown() 方法两次。我注意到的另一个小问题是，当我单击按钮/链接和面板向下滑动之间存在一些延迟。

你可以看一下这里的jsfiddle来测试一下，看看问题所在:

http://jsfiddle.net/3VzTj/1/

jQuery:

$(document).ready(function() {
  var class_link, class_div, content_div;
  var all_panels = $('article > div.row').not(':first-child');

  $(all_panels).hide();

  $('div.buttons a').click(function() {
    class_link = $(this).attr('class');
    class_div = class_link.match(/[^-]+$/);
    content_div = $(this).closest('article').find('div.' + class_div).parent();

    if ($(content_div).is(':visible')) {
      $(all_panels).slideUp();
    } else {
      $(all_panels).slideUp(function() {
        $(content_div).hide().slideDown();
      });
    }

    return false;
  });
});

HTML:

<section class="grid-container">
  <article>
    <div class="row clearfix">
      <div class="column half">
        <h2>Headline 1</h2>
      </div>
      <div class="column opposite half buttons">
        <a class="button-content1" href="#">Content 1</a>
        <a class="button-content2" href="#">Content 2</a>
      </div>
    </div>

    <div class="row clearfix">
      <div class="column full content1">
        <h1>Content 1</h1>
      </div>
    </div>

    <div class="row clearfix">
      <div class="column full content2">
        <h1>Content 2</h1>
      </div>
    </div>
  </article>


  <article>
    <div class="row clearfix">
      <div class="column half">
        <h2>Headline 2</h2>
      </div>
      <div class="column opposite half buttons">
        <a class="button-content1" href="#">Content 1</a>
        <a class="button-content2" href="#">Content 2</a>
      </div>
    </div>

    <div class="row clearfix">
      <div class="column full content1">
        <h1>Content 1</h1>
      </div>
    </div>

    <div class="row clearfix">
      <div class="column full content2">
        <h1>Content 2</h1>
      </div>
    </div>
  </article>
</section>

Answer 1

// replace
$(all_panels).slideUp(function() {
  $(content_div).hide().slideDown();
});

//with
$(all_panels).slideUp().promise().done(function() {
  $(content_div).hide().slideDown();
});