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accordion ui.newHeader.index()增量为2,而不是1

jquery-ui jquery javascript

asdf_enel_hak · 技术社区 · 7 年前

我想问为什么jqueryui,ui.newHeader.index()每次递增2倍?

$("#accordion").accordion({

  collapsible: false,
  clearStyle: true,
  active: -1,
  heightStyle: "content",
  activate: function(event, ui) {
    event.stopPropagation();
    var activeIndexSearch = $("#search-ad").accordion("option", "active");
    newIndex = ui.newHeader.index()
    oldIndex = ui.oldHeader.index()
    alert("newIndex:" + newIndex)
    alert("oldIndex:" + oldIndex)
  }
});

<link rel="stylesheet" href="//code.jquery.com/ui/1.12.1/themes/base/jquery-ui.css">
<link rel="stylesheet" href="/resources/demos/style.css">
<script src="https://code.jquery.com/jquery-1.12.4.js"></script>
<script src="https://code.jquery.com/ui/1.12.1/jquery-ui.js"></script>
<div id="accordion">
  <h3>Section 1</h3>
  <div>
    <p>
      Mauris mauris ante, blandit et, ultrices a, suscipit eget, quam. Integer ut neque. Vivamus nisi metus, molestie vel, gravida in, condimentum sit amet, nunc. Nam a nibh. Donec suscipit eros. Nam mi. Proin viverra leo ut odio. Curabitur malesuada. Vestibulum
      a velit eu ante scelerisque vulputate.
    </p>
  </div>
  <h3>Section 2</h3>
  <div>
    <p>
      Sed non urna. Donec et ante. Phasellus eu ligula. Vestibulum sit amet purus. Vivamus hendrerit, dolor at aliquet laoreet, mauris turpis porttitor velit, faucibus interdum tellus libero ac justo. Vivamus non quam. In suscipit faucibus urna.
    </p>
  </div>
  <h3>Section 3</h3>
  <div>
    <p>
      Nam enim risus, molestie et, porta ac, aliquam ac, risus. Quisque lobortis. Phasellus pellentesque purus in massa. Aenean in pede. Phasellus ac libero ac tellus pellentesque semper. Sed ac felis. Sed commodo, magna quis lacinia ornare, quam ante aliquam
      nisi, eu iaculis leo purus venenatis dui.
    </p>
    <ul>
      <li>List item one</li>
      <li>List item two</li>
      <li>List item three</li>
    </ul>
  </div>
  <h3>Section 4</h3>
  <div>
    <p>
      Cras dictum. Pellentesque habitant morbi tristique senectus et netus et malesuada fames ac turpis egestas. Vestibulum ante ipsum primis in faucibus orci luctus et ultrices posuere cubilia Curae; Aenean lacinia mauris vel est.
    </p>
    <p>
      Suspendisse eu nisl. Nullam ut libero. Integer dignissim consequat lectus. Class aptent taciti sociosqu ad litora torquent per conubia nostra, per inceptos himenaeos.
    </p>
  </div>
</div>

1 回复 | 直到 7 年前

VesperX 7 年前

检查规格 jQuery .index()

如果没有参数传递给.index()方法,则返回值是一个整数,指示jQuery对象中第一个元素的位置 相对于它的兄弟元素 .

因为你有 <div> 标签在每个标题标签之间,标题的索引用1分隔。

<h3>Section 1</h3>   <!-- 0 -->
<div>...</div>       <!-- 1 -->

<h3>Section 2</h3>   <!-- 2 -->
<div>...</div>       <!-- 3 -->

<h3>Section 3</h3>   <!-- 4 -->
<div>...</div>       <!-- 5 -->

<h3>Section 4</h3>   <!-- 6 -->
<div>...</div>       <!-- 7 -->

如果你想让它们增加1,只需替换

newIndex = ui.newHeader.index();

具有

newIndex = ui.newHeader.index();
newIndex /= 2;

或者你可以解释一下分居的原因。你的电话。