Css悬停在元素之前

Question

I have a div and a div:before. I want when the mouse goes over (hover) the :before element to change its color. Is there a way to do it no matter with css or jQuery?

I tried stuff like div:before:hover but nothing happened

Thanks in advance

Answer 1

Solution 1

(doesn't resolve question) With just css:

span:before {
    color: red;
    content: "hi";
}
span:hover:before {
    color: blue;
}

html

<span>text</span>

edit: fiddle http://jsfiddle.net/bwkM6/

Solution 2

Work around for given problem without :before

http://jsfiddle.net/Z97uN/1/

Answer 2

:before和:after伪类不能承担其他伪类属性。

Answer 3

You can't combine pseudo-elements quite like that, apparently. However, you can use jQuery to inject your " :before " element into the DOM, rather than doing it with CSS.

$(function() {
    $('div.interesting').before('<div class="interesting-before"></div>');
});

Then in your CSS you just reference .interesting-before and .interesting-before:hover instead of .interesting:before and .interesting:before:hover .

See http://jsfiddle.net/Z97uN/2/ for an example.

Answer 4

I see several solutions:

EASIEST - you assign specific class to the div:before

//HTML
<div class="specificClass">A</div>
<div>B</div>
<style>
.specificClass:hover {color: red}
</style>

However from your question it seems you cannot do that. Then leverage jQuery:

Approach #1

//JAVASCRIPT
$("div").prev().addClass("specificClass");

//in your CSS 
.specificClass:hover {color:red}

Approach #2

//JAVASCRIPT
$("div").delegate($("div").prev(),"mouseenter mouseleave",function(){
    $(this).toggleClass("specificClass");
}

//in your CSS 
.specificClass {color:red}

please note that you must understand that this will work only if there are only 2 divs. If there are more, all of them but the last will receive the ".specificClass." Anyway the same would happen if "span:hover:before" worked.

If you explain what and why you want to achieve what you describe we would be able to give better solution.

Answer 5

The correct syntax is

div:hover:before
{
//css here
}

jsfiddle