Animate block a-tag on hover

YourDirector · 12-24-2012, 11:19 PM

Hey everyone,

I have a series of a-tags containing hrefs which are displayed as block-inlines. I'v currently got them set to change height hover just with CSS but I'd really like this to be animated.

I've played around with a couple of tutorials i've found online but I just cant get anything to work.

I have a div called "nav-holder" which contains 4 similar to the following:

Code:

<a class="link_home" href="index.php" /></a>

I need to animate link_home to change from 50px heigh to 120px heigh onMouseOver, then back again onMouseOut.

Could anyone advise how to do this?

Thanks

coothead · 12-25-2012, 12:32 AM

Hi there YourDirector,

Here is an example...

Code:


<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01//EN"
   "http://www.w3.org/TR/html4/strict.dtd">
<html lang="en">
<head>

<meta http-equiv="Content-Type" content="text/html; charset=utf-8">
<meta name="language" content="english"> 
<meta http-equiv="Content-Style-Type" content="text/css">

<title>css transition</title>

<style type="text/css">
body {
    background-color:#f0f0f0;
    font-family:verdana,sans-serif;
    font-size:1em;
 }
#nav {
    width:396px;
    padding:0;
    margin:0 auto;
    list-style-type:none;
 }
#nav li {
    float:left;
    margin:0 4px;
 }
#nav a {
    display:block;
    line-height:50px;
    padding:0 10px;
    border:1px solid #963;
    background-color:#fed;
    color:#666;
    box-shadow:0 0 0 #f0f0f0;
    -webkit-transition:all 2s ease;
    -moz-transition:all 2s ease;
    transition:all 2s ease;
 }
#nav a:hover {
    line-height:120px;
    border-color:#630;
    background-color:#f93;
    color:#000;
    box-shadow:4px 4px 4px #666;
 }
</style>

</head>
<body>

<ul id="nav">
 <li><a href="#">link one</a></li>
 <li><a href="#">link two</a></li>
 <li><a href="#">link three</a></li>
 <li><a href="#">link four</a></li>
</ul>

</body>
</html>

Support:-

http://caniuse.com/#search=transition

coothead

vwphillips · 12-25-2012, 03:16 PM

Code:

<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01//EN"
   "http://www.w3.org/TR/html4/strict.dtd">
<html lang="en">
<head>

<meta http-equiv="Content-Type" content="text/html; charset=utf-8">
<meta name="language" content="english">
<meta http-equiv="Content-Style-Type" content="text/css">

<title>css transition</title>

<style type="text/css">
body {
    background-color:#f0f0f0;
    font-family:verdana,sans-serif;
    font-size:1em;
 }
#nav {
    width:396px;
    padding:0;
    margin:0 auto;
    list-style-type:none;
 }
#nav li {
    float:left;
    margin:0 4px;
    background-color:#fed;
    border:1px solid #963;
 }
#nav a {
    display:block;
    line-height:50px;
    padding:0 10px;
    border:1px solid #963;
    background-color:#fed;
    color:#666;
    box-shadow:0 0 0 #f0f0f0;
    -webkit-transition:all 2s ease;
    -moz-transition:all 2s ease;
    transition:all 2s ease;
 }
#nav a:hover {
    border-color:#630;
    background-color:#f93;
    color:#000;
    box-shadow:4px 4px 4px #666;
 }
</style>

</head>
<body>

<ul id="nav">
 <li><a href="#">link one</a></li>
 <li><a href="#">link two</a></li>
 <li><a href="#">link three</a></li>
 <li><a href="#">link four</a></li>
</ul>

<script type="text/javascript">

var zxcLIHeight={

 init:function(o){
  var id=o.ID,ms=o.Speed,h=o.Height,obj=document.getElementById(id),lis=obj.getElementsByTagName('LI'),lh,ary=[],z0=0;
  for (;z0<lis.length;z0++){
   lh=lis[z0].offsetHeight;
   ary[z0]=[lis[z0],lh,typeof(h)=='number'?h:lh,lh];
   this.addevt(lis[z0],'mouseover','Open',id,z0,true);
   this.addevt(lis[z0],'mouseout','Open',id,z0,false);
  }
  zxcLIHeight['zxc'+id]={
   ary:ary,
   ms:typeof(ms)=='number'?ms:1000
  }
 },

 Open:function(id,nu,ud){
  var o=zxcLIHeight['zxc'+id],t;
  if (o){
   t=o.ary[nu][ud?2:1];
   clearTimeout(o.ary[nu][4]);
   this.animate(o,o.ary[nu],o.ary[nu][3],t,new Date(),o.ms*Math.abs((t-o.ary[nu][3])/(o.ary[nu][2]-o.ary[nu][1]))+10);
  }
 },

 animate:function(o,ary,f,t,srt,mS){
  var oop=this,ms=new Date().getTime()-srt,now=(t-f)/mS*ms+f;
  if (isFinite(now)){
   ary[3]=Math.max(now,0);
   ary[0].style.height=ary[3]+'px';
  }
  if (ms<mS){
   ary[4]=setTimeout(function(){ oop.animate(o,ary,f,t,srt,mS); },10);
  }
  else {
   ary[3]=t;
   ary[0].style.height=t==ary[1]?'auto':t+'px';
  }
 },

 addevt:function(o,t,f,p,p1,p2){
  var oop=this;
  if (o.addEventListener){
   o.addEventListener(t,function(e){ return oop[f](p,p1,p2);}, false);
  }
  else if (o.attachEvent){
   o.attachEvent('on'+t,function(e){ return oop[f](p,p1,p2); });
  }
 }


}

zxcLIHeight.init({
 ID:'nav',
 Height:120,
 Speed:1000
});
</script>
</body>
</html>