Question

我有一个多级侧边栏导航树，里面有li项目中的字体真棒图标。我希望图标在展开时从加号变为负号，在折叠时返回加号。单击一个li项不应影响另一个li项的状态。

这是我正在使用的jQuery脚本：

$('.tree-toggle').click(function () {
        $(this).parent().children('ul.tree').toggle(1);
        $(this).parent().toggleClass('active');
    });

    $('.aside-list li').click(function(){
        $(this).children('label').children('i').toggleClass('fa-plus-square fa-minus-square')
        $(this).children('label').children('i').toggleClass('fa-caret-up fa-caret-down')
    });

这是我的HTML结构：

<div class="well">
        <ul class="nav nav-list aside-list">
            <li>
            <label class="tree-toggle nav-header">Category <i class="fa fa-caret-down"></i></label>
                <ul class="nav nav-list tree">
                    <li><label class="tree-toggle nav-header"><i class="fa fa-plus-square"></i> In id sodales leo</label>
                        <ul class="nav nav-list tree">
                            <li><label class="tree-toggle nav-header"><i class="fa fa-plus-square"></i> Tortor masa</label>
                                <ul class="nav nav-list tree">
                                <li><a href="#">Lorem ipsum dolor sit amet</a></li>
                                <li><a href="#">Adipiscing elit</a></li>
                                    <li><label class="tree-toggle nav-header"><i class="fa fa-plus-square"></i> Integro commodo</label>
                                        <ul class="nav nav-list tree">
                                            <li><a href="#">Colors</a></li>
                                            <li><a href="#">Sizes</a></li>
                                        </ul>
                                    </li>
                                </ul>
                            </li>
                        </ul>
                    </li>
                </ul>
            </li>
        </ul><!-- end aside-list -->
    </div><!-- end well -->

现在功能有问题，因为点击一个项目会改变列表中所有项目的图标状态。

我也为代码制作了一个JS小提琴：
https://jsfiddle.net/njm9Lz4e/#&togetherjs=PRGpaib46U

Answer 1

通过打开LI元素，您可以暴露其他LI元素单击该内部LI - 单击将传播到导致您的问题的父LI，因此

阻止点击传播到父元素，如：

$('.aside-list li').click(function(evt) {
   evt.stopPropagation();

<强> Diagnostic flags in Clang

Answer 2

使用event.target进行li点击，效果很好。

＆＃13;

$('.tree-toggle').click(function() {
      $(this).parent().children('ul.tree').toggle(1);
      $(this).parent().toggleClass('active');
    });

    $('.aside-list li').click(function(event) {
      $(event.target).children('label').children('i').toggleClass('fa-plus-square fa-minus-square')
      $(event.target).children('label').children('i').toggleClass('fa-caret-up fa-caret-down')
    });

＆＃13;

.tree {
  display: none
}

＆＃13;

<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>
<!-- Latest compiled and minified CSS -->
<link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.7/css/bootstrap.min.css" integrity="sha384-BVYiiSIFeK1dGmJRAkycuHAHRg32OmUcww7on3RYdg4Va+PmSTsz/K68vbdEjh4u" crossorigin="anonymous">

<!-- Optional theme -->
<link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.7/css/bootstrap-theme.min.css" integrity="sha384-rHyoN1iRsVXV4nD0JutlnGaslCJuC7uwjduW9SVrLvRYooPp2bWYgmgJQIXwl/Sp" crossorigin="anonymous">
<link rel="stylesheet" href="https://cdnjs.cloudflare.com/ajax/libs/font-awesome/4.7.0/css/font-awesome.min.css">
<!-- Latest compiled and minified JavaScript -->
<script src="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.7/js/bootstrap.min.js" integrity="sha384-Tc5IQib027qvyjSMfHjOMaLkfuWVxZxUPnCJA7l2mCWNIpG9mGCD8wGNIcPD7Txa" crossorigin="anonymous"></script>
<div class="well">
        <ul class="nav nav-list aside-list">
            <li>
            <label class="tree-toggle nav-header">Category <i class="fa fa-caret-down"></i></label>
                <ul class="nav nav-list tree">
                    <li><label class="tree-toggle nav-header"><i class="fa fa-plus-square"></i> In id sodales leo</label>
                        <ul class="nav nav-list tree">
                            <li><label class="tree-toggle nav-header"><i class="fa fa-plus-square"></i> Tortor masa</label>
                                <ul class="nav nav-list tree">
                                <li><a href="#">Lorem ipsum dolor sit amet</a></li>
                                <li><a href="#">Adipiscing elit</a></li>
                                    <li><label class="tree-toggle nav-header"><i class="fa fa-plus-square"></i> Integro commodo</label>
                                        <ul class="nav nav-list tree">
                                            <li><a href="#">Colors</a></li>
                                            <li><a href="#">Sizes</a></li>
                                        </ul>
                                    </li>
                                </ul>
                            </li>
                        </ul>
                    </li>
                </ul>
            </li>
        </ul><!-- end aside-list -->
    </div><!-- end well -->

＆＃13;

jQuery列表项图标切换与子元素

2 个答案:

阻止点击传播到父元素，如：