Does anybody know how the eyeball in this website is designed? Is this javascript (jQuery perhaps), or simply HTML5 and CSS? I just don't really understand how you get a little image in that shape, get it's onhover method, set a new picture, and then make it clickable. Is this a button?
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3 Answers
They use one image as the background (found here: http://animalvfx.com/images/bg-open-close.png).
They are only using CSS, they have a hover state on the class that sets the background position to a negative offset.
Basically the styles are:
.slide-holder .opener {
width: 30px;
height: 38px;
overflow: hidden;
position: absolute;
bottom: -38px;
background: url(../images/bg-open-close.png) no-repeat;
}
.opener:hover {
background-position: 0 -76px;
}
Effectively you are only seeing one part of the background image at a time. Because the image states are similar, it appears to be looking up.
The click event of the eye is using jQuery slidedown
If you want to find out how things work yourself, you can use the developer console in most popular web browsers. Then use the HTML inspector tool to inspect the element you are interested in. Developers consoles are usually activated by pressing F12. This works in any decent modern web browser (and Firefox with Firebug)
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It is a sprite - http://animalvfx.com/images/bg-open-close.png - on hover the background image is shifted from the centered eyeball to the offset one.
.opener:hover {
background-position: 0 -76px;
}
Comments
I believe he compressed his javascript so its not legible to the human eye but I believe he uses a combination of jquery/javascript, and css3. The hover where the eye changes its appearance I believe is just some simple javascript to change the image when hovered over. I know for sure a toggle class is being used when you click the eye because you can see the class change on the list in the HTML source (it originally is set to display: none). This definitely seems like the work of slideDown from jQuery. Hope this helps :]
