如果父类中存在类，则获取子div内容

Question

I have a module where, on hover, I want the content on the right to change (stuff in the blue div in the demo below).

To achieve this, what I'm trying to do is:

• If class .active exists on li.tabs then , get the .content from it and display it in the .overview div.

But unsure on how I can get .content when class .active exists in .overview ?

I have the following markup (simplified):

 // 1. Check if li has class active if ($('li.tabs').hasClass('active')) { // 2. get .content div from li where class .active exists } 

 .tabs{ border: 1px solid yellow; } .list { border: 1px solid red; flex-basis: 40%; } .list li { list-style-type: none; } .overview { border: 1px solid blue; -ms-flex-preferred-size: 60%; flex-basis: 60%; } 

 <script type='text/javascript' src='https://code.jquery.com/jquery-3.4.1.min.js?ver=3.4.1'></script> <link rel="stylesheet" href="https://stackpath.bootstrapcdn.com/bootstrap/4.3.1/css/bootstrap.min.css" integrity="sha384-ggOyR0iXCbMQv3Xipma34MD+dH/1fQ784/j6cY/iJTQUOhcWr7x9JvoRxT2MZw1T" crossorigin="anonymous"> <div class="d-flex flex-row"> <div class="list"> <li class="tabs active"> <div class="header"><span>Header</span></div> <div class="content d-none"><p>content</p></div> </li> <li class="tabs"> <div class="header"><span>Header 2</span></div> <div class="content d-none"><p>content 2</p></div> </li> </div> <div class="overview"> </div> </div> 

Answer 1

Complete code for your, together with active class toggle:

 var overview = $('.overview'); $('.tabs').each(function(i) { var thisTab = $(this); var thisContent = thisTab.find('.content').html(); thisTab.on('mouseenter', function(e) { thisTab.addClass('active'); overview.html(thisContent); }).on('mouseleave', function(e) { thisTab.removeClass('active'); overview.html(''); }); }); 

 .tabs { border: 1px solid yellow; } .tabs.active { background: none yellow; } .list { border: 1px solid red; flex-basis: 40%; } .list li { list-style-type: none; } .overview { border: 1px solid blue; -ms-flex-preferred-size: 60%; flex-basis: 60%; } 

 <link href="https://stackpath.bootstrapcdn.com/bootstrap/4.3.1/css/bootstrap.min.css" rel="stylesheet"/> <script src="https://cdnjs.cloudflare.com/ajax/libs/jquery/3.3.1/jquery.min.js"></script> <div class="d-flex flex-row"> <div class="list"> <li class="tabs"> <div class="header"><span>Header</span></div> <div class="content d-none"> <p>Content 1</p> </div> </li> <li class="tabs"> <div class="header"><span>Header 2</span></div> <div class="content d-none"> <p>Content 2</p> </div> </li> </div> <div class="overview"> </div> </div> 

Also on JSFiddle

Answer 2

You can select a children by letting a space between the selectors (in JQuery):

$(".li.tabs.active .content") 

will select all the content whom parents have the active class