是否可以在悬停时在两个 fontawesome 图标之间切换？

Question

I have an anchor tag with a font-awesome icon as follows

<a href="#" class="lock"><i class="icon-unlock"></i></a>

Is it possible to change to icon on hover to a different icon?

my CSS

.lock:hover{color:red}

Aside from the icon turning red I'd also like to change the icon to the following

<i class="icon-lock"></i>

Is this possible without the help of JavaScript? Or do I need Javascript/Jquery on hover for this?

Thank you.

Answer 1

You could toggle which one's shown on hover:

_HTML:

 <a href="#" class="lock"> <i class="icon-unlock"></i> <i class="icon-lock"></i> </a>

_CSS:

.lock:hover .icon-unlock:before {
    content: "\f023";
}

Or, you could change the content of the icon-unlock class:

 .lock:hover .icon-unlock:before { content: "\\f023"; }

Answer 2

In my templates I often use FontAwesome and I came up with this CSS trick

* > .fa-hover-show,
*:hover > .fa-hover-hidden {
  display: none;
}
*:hover > .fa-hover-show {
  display: inline-block;
}

Add both icons to the HTML; the default icon should have the fa-hover-hidden class while the hover icon one should have fa-hover-show .

<a href="#">
  <i class="fa fa-lock fa-hover-hidden"></i>
  <i class="fa fa-lock-open fa-hover-show"></i>
  <span class="fa-hover-hidden">Locked</span>
  <span class="fa-hover-show">Unlocked</span>
</a>

Given that the icon has a hover effect, it is likely that it is inside a button or link, in which case, a proper solution would be to also react to the change on :focus as well.

* > .fa-hover-show,
*:hover > .fa-hover-hidden,
*:focus > .fa-hover-hidden {
  display: none;
}
*:focus > .fa-hover-show,
*:hover > .fa-hover-show {
  display: inline-block;
}

Answer 3

If you are using SCSS, you could simply do this. Much lightweight than any of the JS solutions and lighter on the DOM.

.icon-unlock:hover {
  @extend .icon-lock;
}

Answer 4

Simple way open css file of font awesome and change icon code on hover...

for example below is the code for lock icon

content: "\f023";

and here below is the code for unlock icon in css which you can put under :hover

.icon-unlock:before {
  content: "\f09c";
}

Answer 5

In jquery it would just be:

$(document).ready(function () {
        $('.icon-unlock').hover(function () {
            $(this).addClass('icon-lock');
            $(this).removeClass('icon-unlock'); 
        }, function () {
            $(this).addClass('icon-unlock');
            $(this).removeClass('icon-lock');
        });


    });

Here is a working jsfiddle of this.

If you are using jquery ui then you can use .switchClass.

An example of this would be:

$(document).ready(function() {
   $(".icon-unlock").switchClass("icon-unlock", "icon-lock");
});

The api on .switchClass() is located here

Answer 6

您可以使用纯 CSS：

ul#menu i.fa-envelope:hover:before {content: "\f2b6";}