我有一个在某些li元素上带有子元素的侧边栏，我在jQuery中编写了一些应针对每种方法的代码，但是当我单击list元素时，它会滑动切换所有有子元素的对象。
我的代码：-
//dropdown toggle on treeview
const hasTree = $('.has-treeview'),
treeView = $('.nav-treeview');
$.each(hasTree,function(){
$(this).click(function(){
$(treeView).slideToggle();
});
});
和我的html;
<ul class="nav nav-pills nav-sidebar flex-column" data-widget="treeview" role="menu" data-accordion="false">
<li class="nav-item has-treeview">
<a href="#" class="nav-link" data-toggle="collapse" data-target=".nav-treeview" aria-expanded="false">
<i class="nav-icon fa fa-pie-chart"></i>
<p>
Charts
<i class="right fa fa-angle-left"></i>
</p>
</a>
<ul class="nav nav-treeview" style="display: none;">
<li class="nav-item">
<a href="#" class="nav-link">
<i class="fa fa-circle-o nav-icon"></i>
<p>ChartJS</p>
</a>
</li>
<li class="nav-item">
<a href="#" class="nav-link">
<i class="fa fa-circle-o nav-icon"></i>
<p>Flot</p>
</a>
</li>
<li class="nav-item">
<a href="p#" class="nav-link">
<i class="fa fa-circle-o nav-icon"></i>
<p>Inline</p>
</a>
</li>
</ul>
</li>
<li class="nav-item has-treeview">
<a href="#" class="nav-link">
<i class="nav-icon fa fa-tree"></i>
<p>
UI Elements
<i class="fa fa-angle-left right"></i>
</p>
</a>
<ul class="nav nav-treeview" style="display: none;">
<li class="nav-item">
<a href="#" class="nav-link">
<i class="fa fa-circle-o nav-icon"></i>
<p>General</p>
</a>
</li>
<li class="nav-item">
<a href="#" class="nav-link">
<i class="fa fa-circle-o nav-icon"></i>
<p>Icons</p>
</a>
</li>
<li class="nav-item">
<a href="#" class="nav-link">
<i class="fa fa-circle-o nav-icon"></i>
<p>Buttons</p>
</a>
</li>
<li class="nav-item">
<a href="#" class="nav-link">
<i class="fa fa-circle-o nav-icon"></i>
<p>Sliders</p>
</a>
</li>
</ul>
</li>
<li class="nav-item has-treeview">
<a href="#" class="nav-link">
<i class="nav-icon fa fa-edit"></i>
<p>
Forms
<i class="fa fa-angle-left right"></i>
</p>
</a>
<ul class="nav nav-treeview" style="display: none;">
<li class="nav-item">
<a href="#" class="nav-link">
<i class="fa fa-circle-o nav-icon"></i>
<p>General Elements</p>
</a>
</li>
<li class="nav-item">
<a href="#" class="nav-link">
<i class="fa fa-circle-o nav-icon"></i>
<p>Advanced Elements</p>
</a>
</li>
<li class="nav-item">
<a href="#" class="nav-link">
<i class="fa fa-circle-o nav-icon"></i>
<p>Editors</p>
</a>
</li>
</ul>
</li>
<li class="nav-item has-treeview">
<a href="#" class="nav-link">
<i class="nav-icon fa fa-table"></i>
<p>
Tables
<i class="fa fa-angle-left right"></i>
</p>
</a>
<ul class="nav nav-treeview" style="display: none;">
<li class="nav-item">
<a href="#" class="nav-link">
<i class="fa fa-circle-o nav-icon"></i>
<p>Simple Tables</p>
</a>
</li>
<li class="nav-item">
<a href="#" class="nav-link">
<i class="fa fa-circle-o nav-icon"></i>
<p>Data Tables</p>
</a>
</li>
</ul>
</li>
<li class="nav-header">EXAMPLES</li>
<li class="nav-item">
<a href="#" class="nav-link">
<i class="nav-icon fa fa-calendar"></i>
<p>
Calendar
<span class="badge badge-info right">2</span>
</p>
</a>
</li>
<li class="nav-item has-treeview">
<a href="#" class="nav-link">
<i class="nav-icon fa fa-envelope-o"></i>
<p>
Mailbox
<i class="fa fa-angle-left right"></i>
</p>
</a>
<ul class="nav nav-treeview" style="display: none;">
<li class="nav-item">
<a href="#" class="nav-link">
<i class="fa fa-circle-o nav-icon"></i>
<p>Inbox</p>
</a>
</li>
<li class="nav-item">
<a href="#" class="nav-link">
<i class="fa fa-circle-o nav-icon"></i>
<p>Compose</p>
</a>
</li>
<li class="nav-item">
<a href="#" class="nav-link">
<i class="fa fa-circle-o nav-icon"></i>
<p>Read</p>
</a>
</li>
</ul>
</li>
<li class="nav-item has-treeview">
<a href="#" class="nav-link">
<i class="nav-icon fa fa-book"></i>
<p>
Pages
<i class="fa fa-angle-left right"></i>
</p>
</a>
<ul class="nav nav-treeview" style="display: none;">
<li class="nav-item">
<a href="#" class="nav-link">
<i class="fa fa-circle-o nav-icon"></i>
<p>Invoice</p>
</a>
</li>
<li class="nav-item">
<a href="#" class="nav-link">
<i class="fa fa-circle-o nav-icon"></i>
<p>Profile</p>
</a>
</li>
<li class="nav-item">
<a href="#" class="nav-link">
<i class="fa fa-circle-o nav-icon"></i>
<p>Login</p>
</a>
</li>
<li class="nav-item">
<a href="#" class="nav-link">
<i class="fa fa-circle-o nav-icon"></i>
<p>Register</p>
</a>
</li>
<li class="nav-item">
<a href="#" class="nav-link">
<i class="fa fa-circle-o nav-icon"></i>
<p>Lockscreen</p>
</a>
</li>
</ul>
</li>
<li class="nav-item has-treeview">
<a href="#" class="nav-link">
<i class="nav-icon fa fa-plus-square-o"></i>
<p>
Extras
<i class="fa fa-angle-left right"></i>
</p>
</a>
<ul class="nav nav-treeview" style="display: none;">
<li class="nav-item">
<a href="#" class="nav-link">
<i class="fa fa-circle-o nav-icon"></i>
<p>Error 404</p>
</a>
</li>
<li class="nav-item">
<a href="#" class="nav-link">
<i class="fa fa-circle-o nav-icon"></i>
<p>Error 500</p>
</a>
</li>
<li class="nav-item">
<a href="#" class="nav-link">
<i class="fa fa-circle-o nav-icon"></i>
<p>Blank Page</p>
</a>
</li>
<li class="nav-item">
<a href="#" class="nav-link">
<i class="fa fa-circle-o nav-icon"></i>
<p>Starter Page</p>
</a>
</li>
</ul>
</li>
<li class="nav-header">MISCELLANEOUS</li>
<li class="nav-item">
<a href="#" class="nav-link">
<i class="nav-icon fa fa-file"></i>
<p>Documentation</p>
</a>
</li>
<li class="nav-header">LABELS</li>
<li class="nav-item">
<a href="#" class="nav-link">
<i class="nav-icon fa fa-circle-o text-danger"></i>
<p class="text">Important</p>
</a>
</li>
<li class="nav-item">
<a href="#" class="nav-link">
<i class="nav-icon fa fa-circle-o text-warning"></i>
<p>Warning</p>
</a>
</li>
<li class="nav-item">
<a href="#" class="nav-link">
<i class="nav-icon fa fa-circle-o text-info"></i>
<p>Informational</p>
</a>
</li>
</ul>
所以基本上我只想扩展被单击的树视图，而不是全部。我要去哪里错了？
答案 0 :(得分：1)
尝试一下：
//dropdown toggle on treeview
const hasTree = $('.has-treeview');
$.each(hasTree,function(){
$(this).click(function(){
$(this).children('.nav-treeview').slideToggle();
});
});
答案 1 :(得分：1)
//dropdown toggle on treeview
const hasTree = $('.has-treeview'),
treeView = $('.nav-treeview');
$(hasTree).click(function(){
$(this).find('.nav-treeview').slideToggle();
});
仅将侦听器添加到具有hasTree类的元素，然后找到其树视图并进行切换。
答案 2 :(得分：0)
仅将数据手风琴从 false 更改为 true！ 更改自：
<ul class="nav nav-pills nav-sidebar flex-column" data-widget="treeview" role="menu" data-accordion="false">
到
<ul class="nav nav-pills nav-sidebar flex-column" data-widget="treeview" role="menu" data-accordion="true">