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Rifqi Fahmi
23,164 Pointswhat if adjacent ?
In this video the .box class will change whenever .wrap class is hovered because .box class is the child from .wrap class. Nah what if there are 2 div element with adjacent to each other called .a and .b. Then I want the condition whenever I hover the a div, the b div is transitioning without affecting the a div. so the a div just like a button to affect the b div??
<div class='b'>Transitioning when the a div is hovered</div>
<div class='a'>Stay</div>
I try this CSS but it didn't work
.b {
width: 100px;
height: 100px;
background-color: blue;
transition-duration: 1s;
}
.a {
display: block;
cursor: pointer;
width: 50px;
height:20px;
background-color: tomato;
}
.a:hover .b {
background-color: forestgreen;
}
Is there anyone have any idea how to do it ?? Thanks :")
1 Answer
Kevin Korte
28,148 PointsHere, check this: http://codepen.io/kevink/pen/vLBGmJ
This works, but it's super fragile. There are a couple of rules to know. This is using the adjacent sibling selector, so first, div a has to come before div b in the dom. Your html was the other way around, in which case this won't work.
Also, no other elements can be between div a and div b in the dom. Nothing, nada. That's a rule of the adjacent sibling selector, hints it's name.
If either or these rules don't work for you, you're better off doing this via javascript.
Rifqi Fahmi
23,164 PointsRifqi Fahmi
23,164 PointsThanks kevin :") . BTW can u type in how to do it in javascript ?? Just for learning :") Thanks
Kevin Korte
28,148 PointsKevin Korte
28,148 PointsSure, I used jquery, it's perfect for this kind of thing. Check it now. I disabled the adjacent selector css, and added the JS.
I added extra elements in between the two divs so you can see that in face the js version can do what the css only adjacent selector can not.
http://codepen.io/kevink/pen/GoKrQa
Let me know if that makes sense to you
Rifqi Fahmi
23,164 PointsRifqi Fahmi
23,164 PointsSo with javascript we declare the property we want to change but the transition duration still we declare it with CSS ?? Am I right ??
Kevin Korte
28,148 PointsKevin Korte
28,148 PointsYes correct. I'm just adding a class that causes the css transition. I believe that CSS3 transitions are more performant than jQuery animations.