Selection of the Dropdown Menu

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I would like when showing the menu dropdown, to li that contains it was still selected. I wonder if there is a way to do this only with CSS.

Follow the example. Thanks!

http://www.tutorialrepublic.com/codelab.php?topic=faq&file=show-hide-dropdown-on-mouse-hover

<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="utf-8">
<title>Show Hide Dropdown Using CSS</title>
<style type="text/css">
    ul{
        padding: 0;
        list-style: none;
        background: #f2f2f2;
    }
    ul li{
        display: inline-block;
        position: relative;
        line-height: 21px;
        text-align: left;
    }
    ul li a{
        display: block;
        padding: 8px 25px;
        color: #333;
        text-decoration: none;
    }
    ul li a:hover{
        color: #fff;
        background: #939393;
    }
    ul li ul.dropdown{
        min-width: 125px; /* Set width of the dropdown */
        background: #f2f2f2;
        display: none;
        position: absolute;
        z-index: 999;
        left: 0;
    }
    ul li:hover ul.dropdown{
        display: block;	/* Display the dropdown */
    }
    ul li ul.dropdown li{
        display: block;
    }
</style>
</head>
<body>
    <ul>
        <li><a href="#">Home</a></li>
        <li><a href="#">About</a></li>
        <li>
            <a href="#">Products &#9662;</a>
            <ul class="dropdown">
                <li><a href="#">Laptops</a></li>
                <li><a href="#">Monitors</a></li>
                <li><a href="#">Printers</a></li>
            </ul>
        </li>
        <li><a href="#">Contact</a></li>
    </ul>
    <p>Lorem ipsum dolor sit amet, consectetur adipiscing elit. Nam eu sem tempor, varius quam at, luctus dui. Mauris magna metus, dapibus nec turpis vel, semper malesuada ante. Vestibulum id metus ac nisl bibendum scelerisque non non purus. Suspendisse varius nibh non aliquet sagittis. In tincidunt orci sit amet elementum vestibulum. Vivamus fermentum in arcu in aliquam. Quisque aliquam porta odio in fringilla. Vivamus nisl leo, blandit at bibendum eu, tristique eget risus. Integer aliquet quam ut elit suscipit, id interdum neque porttitor. Integer faucibus ligula.</p>
</body>
</html>

css dropdown

  • In case you want Produtos continue with the darkest gray and the white font after opening the dropdown menu? Sort of http://jsfiddle.net/hmredmond/meeqR/ ?

1 answer

2

So that the li also stick with the background just join ul li:hover in CSS. You can also join > a if you want white in the text. > a means the elements a who are direct descendants of li, so only affecting the first a and not the others who are in deeper levels.

That way all the li descendants of ul that have the mouse inside that element receive this rule. And note that as the links that open are also descendants of that li then the rule holds as long as the mouse is on top of them too.

Just do it then ul li:hover > a, ul li a:hover{ in the 4th CSS block of your example.

<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="utf-8">
<title>Show Hide Dropdown Using CSS</title>
<style type="text/css">
    ul{
        padding: 0;
        list-style: none;
        background: #f2f2f2;
    }
    ul li{
        display: inline-block;
        position: relative;
        line-height: 21px;
        text-align: left;
    }
    ul li a{
        display: block;
        padding: 8px 25px;
        color: #333;
        text-decoration: none;
    }
    ul li:hover > a, ul li a:hover{ /* <--------- mudei aqui */
        color: #fff;
        background: #939393;
    }
    ul li ul.dropdown{
        min-width: 125px; /* Set width of the dropdown */
        background: #f2f2f2;
        display: none;
        position: absolute;
        z-index: 999;
        left: 0;
    }
    ul li:hover ul.dropdown{
        display: block;	/* Display the dropdown */
    }
    ul li ul.dropdown li{
        display: block;
    }
</style>
</head>
<body>
    <ul>
        <li><a href="#">Home</a></li>
        <li><a href="#">About</a></li>
        <li>
            <a href="#">Products &#9662;</a>
            <ul class="dropdown">
                <li><a href="#">Laptops</a></li>
                <li><a href="#">Monitors</a></li>
                <li><a href="#">Printers</a></li>
            </ul>
        </li>
        <li><a href="#">Contact</a></li>
    </ul>
    <p>Lorem ipsum dolor sit amet, consectetur adipiscing elit. Nam eu sem tempor, varius quam at, luctus dui. Mauris magna metus, dapibus nec turpis vel, semper malesuada ante. Vestibulum id metus ac nisl bibendum scelerisque non non purus. Suspendisse varius nibh non aliquet sagittis. In tincidunt orci sit amet elementum vestibulum. Vivamus fermentum in arcu in aliquam. Quisque aliquam porta odio in fringilla. Vivamus nisl leo, blandit at bibendum eu, tristique eget risus. Integer aliquet quam ut elit suscipit, id interdum neque porttitor. Integer faucibus ligula.</p>
</body>
</html>

As requested in the comments here is the same functionality for example only with Javascript, but it is best to do only with CSS as in the example above and not with Javascript.

Example JS: jsfiddle.net/tpmzLaro/

  • Sergio, how would the same solution be in pure Javascript? You know?

  • It’s just for information only. If you could do it, I’d be grateful.

  • @Ericklemos joined example at the end of the answer.

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