jQuery 可折叠 UL

Question

我正在使用 jQuery 创建一个导航系统。我想要实现的是在页面加载时显示父元素并隐藏子元素。我做得非常简单。

然而，当我在其他父元素之间切换时，我希望能够隐藏之前的子元素，以便我只能打开一个 <ul>一次。

//user nav
$('.child').hide();
$('.parent').click(function() {
    $(this).find('ul').slideToggle();
});

<script src="https://cdnjs.cloudflare.com/ajax/libs/jquery/2.0.2/jquery.min.js"></script>
<div class="rightBottom">
<h1 class="boxheadings">Other functions</h1>
<p class="boxp">Click this button to view your current published site in a new window. This will not show your most recent changes until you click the ‘Publish Changes’ button on the right, alternatively click view local to see unpublished changes.</p>
<ul id="usernav">
    <li class="parent">Manage
        <ul class="child">
            <li>child11</li>
            <li>child12</li>
        </ul>
    </li>
    <li class="parent">Subscriptions
        <ul class="child">
            <li>E-Briefings</li>
            <li>E-Briefings Subscriptions</li>
            <li>Knowledge Briefings</li>
        </ul>
    </li>
    <li class="parent">Media Store
        <ul class="child">
            <li>Image Store</li>
            <li>Document Store</li>
            <li>Media Store</li>
        </ul>
    </li>
</ul>
</div>

Answer 1

完成。这很简单。在显示当前 ul 之前，我隐藏了所有内容。

见:

//hide all children initially
$('.child').hide();

//adding a click handlers to every all parents
$('.parent').click(function() {

   //slide up the children which are open already
   $('.child').slideUp();

   //find the child of clicked parent and toggle its visibility
   $(this).find('ul').slideToggle();
});