Utilize jQuery to selectively apply functionality to specific class and parent elements

Presented below is a nested list structure:

<ul>
<li class="topCurrent">One
    <ul>
        <li>One-1
            <ul>
                 <li>One-1.1
                     <ul>
                         <li class="current">One-1.1.1
                             <ul>
                                 <li>One-1.1.1.1</li>
                                 <li>One-1.1.1.2</li>
                                 <li>One-1.1.1.3</li>
                             </ul>
                         </li>
                         <li>One-1.1.2</li>
                     </ul>
                 </li>
                 <li>One-1.2</li>
            </ul>
        </li>
        <li>One-2</li>
        <li>One-3</li>
    </ul>
</li>
<li>Two
    <ul>
        <li>Two-1</li>
        <li>Two-2</li>
    </ul>
</li>

The jQuery script below hides all nested ul elements until they are hovered over:

$("ul li ul").hide();

$("ul li").hoverIntent(
    function(){
        $(this).children('ul').slideDown('fast');
    },
    function(){
       $(this).children('ul').slideUp('fast');
    }
);

I am seeking a solution to keep the structure open from any li element with class="current" while still allowing hover effects on other ul elements. The parent ul of class="current" should remain visible at all times. Any thoughts would be appreciated!

Thank you for your help!

Answer №1

Here is the solution you've been looking for:

$("ul li:not(:has(li.current))")
   .find("ul").hide().end() // Conceal all other ULs
   .hoverIntent(
        function(){
            $(this).children('ul').slideDown('fast');
        },
        function(){
           $(this).children('ul').slideUp('fast');
        }
    );

This code ensures that the hover effect only applies to LI elements without a child element of li.current.

Check out this demonstration (using hover instead of hoverIntent for easier presentation).

Answer №2

To improve your hoverIntent function, simply update it as shown below:

$("ul li").hoverIntent(
    function(){
        $(this).children('ul').slideDown('fast');
    },
    function(){
       $(this).children('ul').not($('.current').parents()).slideUp('fast');
    }
);

By the way, credit goes to Nick Craver's insightful response in a previous discussion about displaying hidden list items based on their class.

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