CODEWITHSUNDEEP
jquerycssjquery-selectorsparent
Hartley Brody
Hartley Brody

Reputation: 9118

Changing the child element's CSS when the parent is hovered

First of all, I'm assuming this is too complex for CSS3, but if there's a solution in there somewhere, I'd love to go with that instead.

The HTML is pretty straightforward.

<div class="parent">
    <div class="child">
        Text Block 1
    </div>
</div>

<div class="parent">
    <div class="child">
        Text Block 2
    </div>
</div>

The child div is set to display:none; by default, but then changes to display:block; when the mouse is hovered over the parent div. The problem is that this markup appears in several places on my site, and I only want the child to be displayed if the mouse is over it's parent, and not if the mouse is over any of the other parents (they all have the same class name and no IDs).

I've tried using $(this) and .children() to no avail.

$('.parent').hover(function(){
            $(this).children('.child').css("display","block");
        }, function() {
            $(this).children('.child').css("display","none");
        });

Upvotes: 222

Views: 308354

Answers (11)

Ali Adravi
Ali Adravi

Reputation: 22813

.child{ display:none; }
.parent:hover .child{ display:block; }


/*just to desgin */
.parent {
   border: 1px solid #ddd;
   min-height: 40px;
   padding: 10px
}
<div class="parent"> 
     parent 1
    <div class="child">
        Text Block 1
    </div>
</div>
<br><br>
<div class="parent"> parent 2
    <div class="child">
        Text Block 2
    </div>
</div>

No need to use the JavaScript or jquery, CSS is enough:

.child{ display:none; }
.parent:hover .child{ display:block; }

SEE DEMO

Upvotes: 205

Fabio Ribeiro de Carvalho
Fabio Ribeiro de Carvalho

Reputation: 790

Using CSS Visibility property

Try to use the CSS visibility property to keep with the size div to be possible to hover the element: Using CSS Sibling 

      .text {
        visibility: hidden;
        margin: 10px;
      }
      .sibling {
        cursor: pointer;
      }
      .sibling:hover + .text {
        visibility: visible;
      }
    <h3 class="sibling">
      Hover me to show the sibling content
    </h3>
    <div class="text">Text Block 1</div>

Upvotes: 0

Jean G.T
Jean G.T

Reputation: 1

What did work for me was nth-of-type to target an specific element, a SVG icon and instead of using display:none; to avoid not finding it later, I used the fill color as the background color, so white in this case and then to target with css the parent and finding directly the SVG element with :nth-type-of(1)

HTML

<div class="feature-col">
<div class="feature-icon bg-primary bg-dark" style="border:0.125em white">
<svg xmlns="http://www.w3.org/2000/svg" width="1em" height="1em" fill="white" class="bi bi-laptop" viewBox="0 0 16 16"><path d="M13.5 3a.5.5 0 0 1 .5.5V11H2V3.5a.5.5 0 0 1 .5-.5h11zm-11-1A1.5 1.5 0 0 0 1 3.5V12h14V3.5A1.5 1.5 0 0 0 13.5 2h-11zM0 12.5h16a1.5 1.5 0 0 1-1.5 1.5h-13A1.5 1.5 0 0 1 0 12.5z"></path>
</svg>
</div>
<h5>Website Design and Hosting</h5>
<p>Some text in here that is a child element as well...</p>
<a href="javascript:void(0);" class="icon-link">Call to action</a>
</div>

CSS

.feature-col:hover svg:nth-of-type(1){
fill: #FF5B0D;
cursor:pointer;
}

JSFIDDLE to play with: https://jsfiddle.net/93de7zbc/6/

Upvotes: 0

Brian Leishman
Brian Leishman

Reputation: 8575

Not sure if there's terrible reasons to do this or not, but it seems to work with me on the latest version of Chrome/Firefox without any visible performance problems with quite a lot of elements on the page.

*:not(:hover)>.parent-hover-show{
    display:none;
}

But this way, all you need is to apply parent-hover-show to an element and the rest is taken care of, and you can keep whatever default display type you want without it always being "block" or making multiple classes for each type.

Upvotes: 6

Hamboy75
Hamboy75

Reputation: 1079

To change it from css you dont even need to set the child class

.parent > div:nth-child(1) { display:none; }
.parent:hover > div:nth-child(1) { display: block; }

Upvotes: 4

Amir Rahman
Amir Rahman

Reputation: 278

.parent:hover > .child {
    /*do anything with this child*/
}

Upvotes: 23

R Tobin
R Tobin

Reputation: 91

If you're using Twitter Bootstrap styling and base JS for a drop down menu:

.child{ display:none; }
.parent:hover .child{ display:block; }

This is the missing piece to create sticky-dropdowns (that aren't annoying)

  • The behavior is to:
    1. Stay open when clicked, close when clicking again anywhere else on the page
    2. Close automatically when the mouse scrolls out of the menu's elements.

Upvotes: 3

Stephen
Stephen

Reputation: 18907

Why not just use CSS?

.parent:hover .child, .parent.hover .child { display: block; }

and then add JS for IE6 (inside a conditional comment for instance) which doesn't support :hover properly:

jQuery('.parent').hover(function () {
    jQuery(this).addClass('hover');
}, function () {
    jQuery(this).removeClass('hover');
});

Here's a quick example: Fiddle

Upvotes: 340

Hussein
Hussein

Reputation: 42818

Use toggleClass().

$('.parent').hover(function(){
$(this).find('.child').toggleClass('color')
});

where color is the class. You can style the class as you like to achieve the behavior you want. The example demonstrates how class is added and removed upon mouse in and out.

Check Working example here.

Upvotes: 8

z666zz666z
z666zz666z

Reputation: 1275

I have what i think is a better solution, since it is scalable to more levels, as many as wanted, not only two or three.

I use borders, but it can also be done with whateever style wanted, like background-color.

With the border, the idea is to:

  • Have a different border color only one div, the div over where the mouse is, not on any parent, not on any child, so it can be seen only such div border in a different color while the rest stays on white.

You can test it at: http://jsbin.com/ubiyo3/13

And here is the code:

<!DOCTYPE html>
<html>
<head>
<meta charset=utf-8 />
<title>Hierarchie Borders MarkUp</title>
<style>

  .parent { display: block; position: relative; z-index: 0;
            height: auto; width: auto; padding: 25px;
          }

  .parent-bg { display: block; height: 100%; width: 100%; 
               position: absolute; top: 0px; left: 0px; 
               border: 1px solid white; z-index: 0; 
             }
  .parent-bg:hover { border: 1px solid red; }

  .child { display: block; position: relative; z-index: 1; 
           height: auto; width: auto; padding: 25px;
         }

  .child-bg { display: block; height: 100%; width: 100%; 
              position: absolute; top: 0px; left: 0px; 
              border: 1px solid white; z-index: 0; 
            }
  .child-bg:hover { border: 1px solid red; }

  .grandson { display: block; position: relative; z-index: 2; 
              height: auto; width: auto; padding: 25px;
            }

  .grandson-bg { display: block; height: 100%; width: 100%; 
                 position: absolute; top: 0px; left: 0px; 
                 border: 1px solid white; z-index: 0; 
               }
  .grandson-bg:hover { border: 1px solid red; }

</style>
</head>
<body>
  <div class="parent">
    Parent
    <div class="child">
      Child
      <div class="grandson">
        Grandson
        <div class="grandson-bg"></div>
      </div>
      <div class="child-bg"></div>
    </div>
    <div class="parent-bg"></div>
  </div>
</body>
</html>

Upvotes: 3

Roger Roelofs
Roger Roelofs

Reputation: 187

Stephen's answer is correct but here's my adaptation of his answer:

HTML

<div class="parent">
    <p> parent 1 </p>
    <div class="child">
        Text Block 1
    </div>
</div>

<div class="parent">
    <p> parent 2 </p>
    <div class="child">
        Text Block 2
    </div>
</div>

CSS

.parent { width: 100px; min-height: 100px; color: red; }
.child { width: 50px; min-height: 20px; color: blue; display: none; }
.parent:hover .child, .parent.hover .child { display: block; }

jQuery

//this is only necessary for IE and should be in a conditional comment

jQuery('.parent').hover(function () {
    jQuery(this).addClass('hover');
}, function () {
    jQuery(this).removeClass('hover');
});

You can see this example working over at jsFiddle.

Upvotes: 3

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