如何在鼠标滚动上折叠Jquery手风琴

Question

I have orders page and currently showing about 500 items. 我有订单页面，目前显示约500项。

I am trying to use jquery accordion. 我正在尝试使用jquery手风琴。

So order information is header and order line items in the accordion. 因此，订单信息是手风琴中的标题和订单行项目。

What I want to do is the auto collapse the accordion as the page scroll. 我想要做的是将手风琴自动折叠为页面滚动。 So in simple words, the user should see accordion collapsed; 所以简单来说，用户应该看到手风琴折叠; as he scrolls down, the accordions at the bottom should then start to collapse themselves. 当他向下滚动时，底部的手风琴应该开始自行折叠。

Here is code for test accordion. 这是测试手风琴的代码。

Can anyone help me so we have lots of accordions. 任何人都可以帮助我，所以我们有很多手风琴。 As we will scroll down the accordion should open up themselves automatically. 当我们向下滚动时，手风琴应该自动打开。

<script>
  $( function() {
    $( "#accordion" ).accordion();
  } );
  </script>
</head>
<body>

<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>

Answer 1

Here is a simple demo. 这是一个简单的演示。

HTML : HTML ：

<div id="target">
  <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>
</div>

CSS : CSS ：

#target {
  overflow: scroll; 
  width: 800px;
  height: 200px
}

JS : JS ：

$(document).ready(function() {
  $("#accordion").accordion()

  $( "#target" ).scroll(function() {
    var verticalScrollPos = $("#target").scrollTop()
    console.log(verticalScrollPos)

    //open the accordion at the offset: verticalScrollPos
    $("#accordion").accordion("option", "active", 2)
  })
})

You need to figure out a way to get the index of the accordion to expand at the current scroll position. 您需要找到一种方法来使手风琴的索引在当前滚动位置展开。

A small working demo here: https://codepen.io/anon/pen/qwZXPO 这里有一个小工作演示： https ： //codepen.io/anon/pen/qwZXPO

如何在鼠标滚动上折叠Jquery手风琴

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如何在鼠标滚动上折叠Jquery手风琴

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