jquery - 切换直接子级的类

Question

我有几个具有相同类的 div。我希望能够通过单击功能独立地切换每个子级的类。

if($("div").hasClass("subLinkPage")) {
    $(".sub-expand_collapse").children(".fa").toggleClass('fa-minus fa-plus');
}

我应该向此脚本添加什么，以便它仅在每个脚本的直接子级上运行。

感谢您的建议

HTML

  <div class="subLinkPage"> 
    <ul aria-labelledby="headLnk_02" class="nav__items">
        <li class="sub_p01 togSubList">

             <a role="button" href="#" class="sub-expand_collapse" aria-label="toggle menu">
                <i class="fa fa-plus" aria-hidden="true"></i>
            </a>

            <a id="subLnk_01" class="parent_link menu_p01" href="../content/m04/m04_c02_p01.html">Facebook feed</a>            
            <ul class="sub_items sub_items_01">
                <li><a href="../content/m04/m04_c02_p01-a.html" class="menu_p01a">Adding a Facebook feed<br/>to the home page</a></li>
            </ul>
        </li>
        <li class="sub_p02 togSubList">


            <a role="button" href="#" class="sub-expand_collapse" aria-label="toggle menu">
              <i class="fa fa-plus" aria-hidden="true"></i>
            </a>

            <a id="subLnk_02" class="parent_link menu_p02" href="../content/m04/m04_c02_p02.html">Twitter feed</a>            
            <ul class="sub_items sub_items_02">
                <li><a href="../content/m04/m04_c02_p02-a.html" class="menu_p02a">Adding a Twitter<br/>feed web part</a></li>
            </ul>
        </li>       
    </ul>
</div>

Answer 1

您可以使用直接子级 jQuery selector (父>子)

$("div.subLinkPage").on('click', function() {
  $(this).find(".sub-expand_collapse > .fa").toggleClass('fa-minus fa-plus');
});